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• Cannot get 3D OpenGL support in Vmware guests, how can I fix this?

  - by jjapol

  I have been working at this problem for 2 days now. I cannot for the life of me enable 3D support in VMWare 9 guests. My specifications are: Hardware: Dell Latitude E5520 laptop. Processor: Intel i7-2620M CPU @ 2.70GHz × 4. Memory: 8GB. Video: Intel Sandybridge Mobile x86/MMX/SSE2 OS: Ubuntu 12.04.1 LTS, 32 bit. Vmware Workstation: 9.0.1 build-894247 Glxgears functions fine. Frame rate is ~60fps. Vmware guest: Windows 7 Starting the Windows 7 guest in VMware throws the following errors: No 3D support is available from the host. and Hardware graphics acceleration is not available. I've read through this VMware forum thread, but again the hardware in the post is different (nVidia). I've followed the instructions at this Ask Ubuntu post as closely as possible as the question is nearly the same as mine although my hardware is different. Answer 1 regarding setting mks.gl.allowBlacklistedDrivers = TRUE; in my vmx configuration file causes the VM to crash when it starts. The second answer I followed as closely as possible. I uninstalled VMware, Did sudo apt-get install build-essential linux-headers-$(uname -r) at a terminal, Added the PPA https://launchpad.net/~glasen/+archive/intel-driver, Then at a terminal did sudo apt-get update && sudo apt-get upgrade -y I reinstalled VMware and have the same results: no 3D in guests. I'm getting the feeling that something is awry with the Sandy Bridge driver, but I can't seem to come up with any solutions. Has anyone out there run across this problem also? By the way, the operation of the likes of Solidworks and AutoCad within a Windpws 7 guest does appear to be improved in VMware 9 vs VMware 8 in spite of the fact that 3D support is lacking in the Windows 7 guest. I'd also add that my glxinfo file was nearly identical to the glxinfo file posted at askubuntu.com/questions/181829/…. I had a total of seven minor differences per a comparison using Meld. –

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• Preventing Users From Copying Text From and Pasting It Into TextBoxes

  Many websites that support user accounts require users to enter an email address as part of the registration process. This email address is then used as the primary communication channel with the user. For instance, if the user forgets her password a new one can be generated and emailed to the address on file. But what if, when registering, a user enters an incorrect email address? Perhaps the user meant to enter [email protected], but accidentally transposed the first two letters, entering [email protected]. How can such typos be prevented? The only foolproof way to ensure that the user's entered email address is valid is to send them a validation email upon registering that includes a link that, when visited, activates their account. (This technique is discussed in detail in Examining ASP.NET's Membership, Roles, and Profile - Part 11.) The downside to using a validation email is that it adds one more step to the registration process, which will cause some people to bail out on the registration process. A simpler approach to lessening email entry errors is to have the user enter their email address twice, just like how most registration forms prompt users to enter their password twice. In fact, you may have seen registration pages that do just this. However, when I encounter such a registration page I usually avoid entering the email address twice, but instead enter it once and then copy and paste it from the first textbox into the second. This behavior circumvents the purpose of the two textboxes - any typo entered into the first textbox will be copied into the second. Using a bit of JavaScript it is possible to prevent most users from copying text from one textbox and pasting it into another, thereby requiring the user to type their email address into both textboxes. This article shows how to disable cut and paste between textboxes on a web page using the free jQuery library. Read on to learn more! Read More >Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Software center is broken and can not be repaired or reinstalled

  - by Michal

  When I open the software center, I am told that I can not use it, for it is broken, and needs to be repaired. First I try to do this automatically, as I was offered. I enter a root password, and then the installation fails. installArchives() failed: reconfiguring packages... reconfiguring packages... reconfiguring packages... reconfiguring packages... (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 275048 files and directories currently installed.) Unpacking wine1.4-i386 (from .../wine1.4-i386_1.4-0ubuntu4.1_i386.deb) ... dpkg: error processing /var/cache/apt/archives/wine1.4-i386_1.4-0ubuntu4.1_i386.deb (--unpack): trying to overwrite '/usr/bin/wine', which is also in package wine1.5 1.5.5-0ubuntu1~ppa1~oneiric1+pulse17 No apport report written because MaxReports is reached already dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/wine1.4-i386_1.4-0ubuntu4.1_i386.deb Error in function: dpkg: dependency problems prevent configuration of wine1.4-common: wine1.4-common depends on wine1.4 (= 1.4-0ubuntu4.1); however: Package wine1.4 is not installed. dpkg: error processing wine1.4-common (--configure): dependency problems - leaving unconfigured What should I do now? First of all, I've tried reinstalling the center, but it failed due to the same 1.4 dependency as is laid out here. I've googled for help and although I don't understand linux at all, I've tried some suggestions: I've tried editing the dpkg status in /var/lib/dpkg/status which failed because the file could not be found. I've tried purging wine/* but that had unresolved dependencies as well. It's a giant mess.

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• Multithreading: Communication from Parent thread to child thread

  - by Dennis Nowland

  I have a List of threads normally 3 threads each of the threads reference a webbrowser control that communicates with the parent control to populate a datagridview. What I need to do is when the user clicks the button in a datagridviewButtonCell corresponding data will be sent back to the webbrowser control within the child thread that originally communicated with the main thread. but when I try to do this I receive the following error message 'COM object that has been separated from its underlying RCW cannot be used.' my problem is that I can not figure out how to reference the relevant webbrowser control. I would appreciate any help that anyone can give me. The language used is c# winforms .Net 4.0 targeted Code sample: The following code is executed when user click on the Start button in the main thread private void StartSubmit(object idx) { /* method used by the new thread to initialise a 'myBrowser' inherited from the webbrowser control each submitters object is an a custom Control called 'myBrowser' which holds detail about the function of the object eg: */ //index: is an integer value which represents the threads id int index = (int)idx; //submitters[index] is an instance of the 'myBrowser' control submitters[index] = new myBrowser(); //threads integer id submitters[index]._ThreadNum = index; // naming convention used 'browser' +the thread index submitters[index].Name = "browser" + index; //set list in 'myBrowser' class to hold a copy of the list found in the main thread submitters[index]._dirs = dirLists[index]; // suppress and javascript errors the may occur in the 'myBrowser' control submitters[index].ScriptErrorsSuppressed = true; //execute eventHandler submitters[index].DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(DocumentCompleted); //advance to the next un-opened address in datagridview the navigate the that address //in the 'myBrowser' control. SetNextDir(submitters[index]); } private void btnStart_Click(object sender, EventArgs e) { // used to fill list<string> for use in each thread. fillDirs(); //connections is the list<Thread> holding the thread that have been opened //1 to 10 maximum for (int n = 0; n < (connections.Length); n++) { //initialise new thread to the StartSubmit method passing parameters connections[n] = new Thread(new ParameterizedThreadStart(StartSubmit)); // naming convention used conn + the threadIndex ie: 'conn1' to 'conn10' connections[n].Name = "conn" + n.ToString(); // due to the webbrowser control needing to be ran in the single //apartment state connections[n].SetApartmentState(ApartmentState.STA); //start thread passing the threadIndex connections[n].Start(n); } } Once the 'myBrowser' control is fully loaded I am inserting form data into webforms found in webpages loaded via data enter into rows found in the datagridview. Once a user has entered the relevant details into the different areas in the row the can then clicking a DataGridViewButtonCell that has tha collects the data entered and then has to be send back to the corresponding 'myBrowser' object that is found on a child thread. Thank you

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• Microsoft Build 2012 Day 1 Keynote Summary

  - by Tim Murphy

  So I have finally dried the tears after watching the Keynote for Build 2012.  This wasn’t because it was an emotional presentation, but because for the second year I missed the goodies.  Each on site attendee got a Surface RT, a Lumia 920 and a voucher for 100GB of SkyDrive storage. The event was opened with the announcement that in the three days since the launch of Windows 8 over 4 million upgrades have been sold.  I don’t care who you are that is an impressive stat.  Ballmer then spent a fair amount of time remaking the case for the Windows and Windows Phone platforms similar to what we have heard over the last to launch events. There were some cool, but non-essential demos.  The one that was the most fun was the Perceptive Pixel 82” slate device.  At first glance I wondered why I would ever want such a device, but then Ballmer explained it’s possible use for schools and boardrooms.  The actually made sense. Then things got strange.  Steve started explaining features that developers could leverage.  Usually this type of information is left to the product leads.  He focused on the integration with the Charms features such as Search and Share. Steve “Guggs” Guggenheim showed off an app that would appeal to my kids from Disney called “Agent P” which is base on Phineas and Ferb.  Then he got to the meat of the presentation.  We found out that you could add a tile that can be used to sell ad space.  In the same vein we also found out that you could use Microsoft’s, Paypal’s or any commerce engine of your own creation or choosing. For those who are interested in sports and especially developing sports apps you would have found the small presentation from Michael Bayle of ESPN.  He introduced the ESPN app which has tons of features.  For the developers in the crowd he also mentioned that ESPN has an API available at developer.espn.com. During the launch events we were told apps were coming.  In this presentation we were actually shown a scrolling list of logos and told about a couple of them.  Ballmer mentioned specifically Twitter, SAP and DropBox.  These are impressive names that were just a couple of the list impressive names. Steve Ballmer addressed the question of why you should develop for the Windows 8 platform.  He feels that Microsoft has the best commercial terms for developers, a better way to build apps than other platforms and a variety of form factors.  His key point though was the available volume of customers given the current Windows install base and assuming even a flat growth of the platform.  This he backed with a promise that Microsoft is going to do better at marketing and you won’t be able to avoid the ads that they are bringing out. The last section of the key note was present by Kevin Gallo from the Windows Phone team.  This was the real reason I tuned into the webcast.  He impressed upon those watching that the strength of developing for the Microsoft platform is the common programming model that now exist.  While there are difference between form factor implementations you can leverage code across them. He claimed that 90% of developer requests for Windows Phone 8 had been implemented.  These include: More controls with better performance Better live tiles including lock screen integration Speech support in custom apps Easier submission to the market place App camera integration VOIP and chat support Bluetooth and NFC support Native C++ development Direct 3D development   The quote from Kevin that stood out for me was that “Take your Dramamine and buckle your seatbelt type of games are coming to Windows Phone 8”.  He back this up by displaying a list of game development frameworks and then having Unity come out and do a demo. Ok, almost done … The last two things of note for me were the announcement that the SDK is immediately available at dev.windowsphone.com and that they were reducing the cost of an individual developer account to $8 for the next 8 days. Let the development commence. del.icio.us Tags: Build 2012,Windows 8,Windows Phone 8,Windows Phone

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• IE9 and the Mystery of the Broken Video Tag

  - by David Wesst

  I was very excited when Microsoft released the Internet Explorer 9 Release Candidate. As far as I was concerned, this was another nail in the coffin for IE6 and step in the right direction for us .NET web developers as our base camp was finally starting to support the latest and greatest future-web standards. Unfortunately, my celebration was short lived as I soon hit a snag while loading up an HTML5 site I was building in Visual Studio 2010. The Mystery After updating Internet Explorer, I ran my HTML5 site that had the oh-so-lovely HTML5 video tag showing a video. Even though this worked in IE9 Beta, it appeared that IE9 RC could not load the same file. I figured that it was the video codec. Maybe IE9 RC no longer supported the video codec I used to encode my video. Here's the code I used: <video width="854" height="480" id="myOtherVideo" autoplay="" controls=""> <source src="/DemoSite1/Media/big_buck_bunny.mp4"/> <div> <p>Your browser does not support HTML5 Video.</p> </div> </video> As you can see from the code, I had the "fail-safe" code inside the video tag. The idea there being that if the video tag, or the video files themselves, are not supported by the browser my video should fail gracefully. What was even more strange was the fact that it worked in all the other HTML5 browsers that supported video. The Investigation Whoa! DJ stop the music. How can any of that make sense? Would the IE team really take such huge strides forward only to forget to include a feature that was already in the beta? I don't think so. I did plenty of searching on the web and asking around on the web, but could not seem to find anyone else having the same problem. Eventually I came across this post talking about declaring the MIME type in the .htaccess file. That got me thinking: does my web server support the video MIME type? I was using VS2010, so how do I know what kind of MIME types are supported by default? Still, my page hosted in Cassini (the web development server in VS2010) works on the other browsers. Why wouldn't it work with IE9 RC? To answer that, it was time to open up the upgraded toolbox known as the Developer's Tools in IE9 and use the new Network Tab. The Conclusion If you take a closer look at the results displayed from the Network tab, you can see that IE9 RC has interpreted the video file as text/html rather than video/mp4. To make this work, I decided to use IIS to debug my HTML5 web application by setting the web project's properties. Then, I added the MIME types that I want to support (i.e. video/mp4, video/ogg, video/webm). Et voila! The Mystery of the Broken Video Tag is solved. After Thoughts After solving the mystery, I still had the question about why my site worked in Chrome, Safari, and Firefox 3.6. After asking around, the best answer that I received was from my colleague Tyler Doerksen. He said that IE9 likely depends on the server telling it what kind of file it is downloading rather than trying to read the metadata about the data it is trying to download before doing anything. I have no facts to back this up, but it makes sense to me. In a browser war where milliseconds can make your browser fall back a few places in the race for supremacy, maybe the IE team opted to depend on the server knowing what kind of content it is serving up. Makes sense to me. In any case, that is just an educated guess. If you have any comments, feel free to post on them below. This post also appears at http://david.wes.st

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• Developing for 2005 using VS2008!

  - by Vincent Grondin

  I joined a fairly large project recently and it has a particularity… Once finished, everything has to be sent to the client under VS2005 using VB.Net and can target either framework 2.0 or 3.0… A long time ago, the decision to use VS2008 and to target framework 3.0 was taken but people knew they would need to establish a few rules to ensure that each dev would use VS2008 as if it was VS2005… Why is that so? Well simply because the compiler in VS2005 is different from the compiler inside VS2008…  I thought it might be a good idea to note the things that you cannot use in VS2008 if you plan on going back to VS2005. Who knows, this might save someone the headache of going over all their code to fix errors… -        Do not use LinQ keywords (from, in, select, orderby…).   -        Do not use LinQ standard operators under the form of extension methods.   -        Do not use type inference (in VB.Net you can switch it OFF in each project properties). o   This means you cannot use XML Literals.   -        Do not use nullable types under the following declarative form:    Dim myInt as Integer? But using:   Dim myInt as Nullable(Of Integer)     is perfectly fine.   -        Do not test nullable types with     Is Nothing    use    myInt.HasValue     instead.   -        Do not use Lambda expressions (there is no Lambda statements in VB9) so you cannot use the keyword “Function”.   -        Pay attention not to use relaxed delegates because this one is easy to miss in VS2008   -        Do not use Object Initializers   -        Do not use the “ternary If operator” … not the IIf method but this one     If(confition, truepart, falsepart).   As a side note, I talked about not using LinQ keyword nor the extension methods but, this doesn’t mean not to use LinQ in this scenario. LinQ is perfectly accessible from inside VS2005. All you need to do is reference System.Core, use namespace System.Linq and use class “Enumerable” as a helper class… This is one of the many classes containing various methods that VS2008 sees as extensions. The trick is you can use them too! Simply remember that the first parameter of the method is the object you want to query on and then pass in the other parameters needed… That’s pretty much all I see but I could have missed a few… If you know other things that are specific to the VS2008 compiler and which do not work under VS2005, feel free to leave a comment and I’ll modify my list accordingly (and notify our team here…) ! Happy coding all!

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• Tomcat Manager Application and HTTP 404 Error

  - by David

  I am trying to set up the admin application for a Tomcat 6.0.24 instance. None of the searches I've done turn up anything I can use. I am using this configuration for Apache 2.2.14: Alias /manager /usr/share/tomcat6-admin/manager <Directory "/usr/share/tomcat6-admin/manager"> Options Indexes FollowSymLinks AllowOverride None allow from all </Directory> ProxyPass /manager ajp://localhost:8009/manager In the tomcat-users.xml I have this: <tomcat-users> <role rolename="tomcat"/> <role rolename="admin"/> <role rolename="operator"/> <role rolename="manager"/> <user username="admin" password="nopasswordforyou" roles="admin,tomcat,manager"/> <user username="operator" password="nevermind" roles="operator"/> </tomcat-users> I found the docs that suggested I needed manager-gui role installed and defined, but that appears to be Tomcat 7, not Tomcat 6. The manager.xml is the default provided with Ubuntu Lucid Lynx 10.04: <Context path="/manager" docBase="/usr/share/tomcat6-admin/manager" antiResourceLocking="false" privileged="true" /> If I access /manager from a web browser, I get a 404 error from Tomcat: "requested resource not available." If I access /manager/images I get the same thing. If I access /manager/401.jsp I get the actual page. In addition, the server.xml has not only the usual Realm (UserDatabaseRealm) but also one for MySQL authentication (JDBCRealm). Investigating this showed that the role of manager was not present there for the user admin; I fixed that by doing: INSERT USER_ROLE_DB SET USER_NAME='admin', ROLE_NAME='manager'; I restarted Tomcat, although I suspect that was overkill. No change. I don't see any errors in catalina.out or in localhost.* log files. What am I missing? What is the interaction between the different realms? How do I get the manager application working?

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• Tech Cast Live - Java and Oracle, One Year Later - February 15th 10AM PST

  - by Cassandra Clark

  Join us for a special live conversation with Ajay Patel, Vice President of Product Development for Application Grid Products and Justin Kestelyn, Director of the Oracle Technology Network. Justin and Ajay will discuss the changes that have come to Java and Oracle since the Sun acquisition, just over a year ago. This live broadcast conversation will include discussion on: - Highlights, challenges and what we learned over the past year - The Future of Java and its importance to Oracle and the community - Oracle's Application Grid product portfolio today Watch Live Event February 15th Watch Archived TechCast Lives You will also have the chance to submit questions to the speakers live on the show, for real-time feedback by using #techcastlive. If your question is read on air we will send you a Free I am the Future of Java t-shirt* *Promotion Details After you have submitted your question and it is read on the live TechCast held February 15th your shirt should arrive in two to four weeks while supplies last. No purchase, payments, or fees are required to receive the gift. Limit one thank you gift per person, and the offer is available only while supplies last. Oracle reserves the right to modify or terminate this offer at any time, for any reason. This offer is not available to Oracle employees or residents of countries subject to U.S. embargo (including Cuba, Iran, Iraq, Libya, North Korea, Sudan, and Syria). Due to Federal Government regulations, this offer is not available to Federal Government customers. Those residing in India or Brazil will be given a substitute gift as we can not ship t-shirts to your country. You are responsible for complying with your employer's policies regarding acceptance of promotional items, and for government laws, regulations and agency policies, if you are a government employee you will not be able to participate. Must be 18 years of age or older. Void where prohibited. Neither Oracle nor any third party assisting Oracle with this offer is responsible for any problems, errors, delays, or technical malfunction related to or impacting this offer. Oracle respects your right to privacy and your information will not be distributed or used for any other purpose. For more information on Oracle's privacy policy, please review our http://www.oracle.com/html/privacy-policy.html. If you have any questions, please contact us at [email protected].

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• Outlying DBAs

  - by steveh99999

  Read an interesting book recently, ‘Outliers – the story of success’ by Malcolm Gladwell. There’s a good synopsis of the book here on wikipedia. I don’t want to write in detailed review of the book, but it’s well worth a read. There were a couple of sections which I thought were possibly relevant to IT professionals and DBAs in particular. Firstly, ‘the 10,000 hour rule’, in this section Gladwell asserts that to be a real ‘elite performer’ takes 10,000 hours of practice. ‘Practice isn’t the thing you do once you’re good, it’s the thing you do that makes you good’.  He gives many interesting examples – the Beatles, Bill Gates etc – but I was wondering could this be applied to DBAs ? If it takes 10,000 hours to be a really elite DBA – how long does that really take ? 8 hours a day makes 1250 days. If we assume that most DBAs work around 230 days a year – then it takes around 5 and a half years to become an elite DBA.   But how much time per day does a DBA spend actually doing DBA work ? Certainly it’s my experience that the more experienced I get as a DBA, the less time I seem to spend actually doing DBA work – ie meetings, change-control meetings, project planning, liasing with other teams, appraisals etc.  Is it more accurate to assume that a DBA spends half their time actually doing ‘real’ DBA work – or is that just my bad luck ?   So, in reality, I’d argue it can take at least 5 1/2 and more likely closer to 10 years to become an elite DBA. Why do I keep receiving CVs for senior DBAs with 2-4 years actual DBA experience ? In the second section I found particularly interesting, Gladwell writes about analysis of plane crashes and the importance of in-cockpit communications. He describes a couple of crashes involving Korean Airlines – where co-pilots were often deferrential to pilots, and unwilling to openly criticise their more senior colleagues or point out errors when things were going badly wrong… There’s a better summary of Gladwell’s concepts on mitigation  here – but to apply this to a DBA role… If you are a DBA and you do not agree with  a decision of one of your superiors, then it’s your duty as a DBA to say what you think is wrong, before it’s too late…  Obviously there’s a fine line between constructive criticism and moaning, but a good senior DBA or manager should be able to take well-researched criticism\debate from a more junior DBA.   Is this really possible ?

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• Upgarde from Asp.Net MVC 1 to MVC 2 - how to and issues with JsonRequestBehavior

  - by Renso

  Goal Upgrade your MVC 1 app to MVC 2 Issues You may get errors about your Json data being returned via a GET request violating security principles - we also address this here. This post is not intended to delve into why the Json GET request is or may be an issue, just how to resolve it as part of upgrading from MVC1 to 2. Solution First remove all references from your projects to the MVC 1 dll and replace it with the MVC 2 dll. Now update your web.config file in your web app root folder by simply changing references to assembly="System.Web.Mvc, Version 1.0.0.0 to Version 2.0.0.0, there are a couple of references in your config file, here are probably most of them you may have:         <compilation debug="true" defaultLanguage="c#">             <assemblies>                        <add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />             </assemblies>         </compilation>           <pages masterPageFile="~/Views/Masters/CRMTemplate.master" pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter, System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validateRequest="False">             <controls>                 <add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" namespace="System.Web.Mvc" tagPrefix="mvc" />   Secondly, if you return Json objects from an ajax call via the GET method you ahve several options to fix this depending on your situation: 1. The simplest, as in my case I did this for an internal web app, you may simply do:             return Json(myObject, JsonRequestBehavior.AllowGet);   2. In Mvc if you have a controller base you could wrap the Json method with:         public new JsonResult Json(object data)         {             return Json(data, "application/json", JsonRequestBehavior.AllowGet);                    }   3. The most work would be to decorate your Actions with:         [AcceptVerbs(HttpVerbs.Get)]   4. Another tnat is also a lot of work that needs to be done to every ajax call returning Json is:                             msg = $.ajax({ url: $('#ajaxGetSampleUrl').val(), dataType: 'json', type: 'POST', async: false, data: { name: theClass }, success: function(data, result) { if (!result) alert('Failure to retrieve the Sample Data.'); } }).responseText;   This should cover all the issues you may run into when upgrading. Let me kow if you run into any other ones.

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• Can't update Nvidia driver and having error near the end of the installation

  - by user94843

  I had just got Ubuntu (first timer to Ubuntu so be very descriptive). I think there a problem with my Nvida update it won't let me update it. This is the name of the update in update manager NVIDIA binary xorg driver, kernel module and VDPAU library. When i attempt to install it, it starts out fine but near the end i get a window titaled package operation failed with these under the details installArchives() failed: Setting up nvidia-current (295.40-0ubuntu1) ... update-initramfs: deferring update (trigger activated) INFO:Enable nvidia-current DEBUG:Parsing /usr/share/nvidia-common/quirks/put_your_quirks_here DEBUG:Parsing /usr/share/nvidia-common/quirks/dell_latitude DEBUG:Parsing /usr/share/nvidia-common/quirks/lenovo_thinkpad DEBUG:Processing quirk Latitude E6530 DEBUG:Failure to match Gigabyte Technology Co., Ltd. with Dell Inc. DEBUG:Quirk doesn't match DEBUG:Processing quirk ThinkPad T420s DEBUG:Failure to match Gigabyte Technology Co., Ltd. with LENOVO DEBUG:Quirk doesn't match Removing old nvidia-current-295.40 DKMS files... Loading new nvidia-current-295.40 DKMS files... Error! DKMS tree already contains: nvidia-current-295.40 You cannot add the same module/version combo more than once. dpkg: error processing nvidia-current (--configure): subprocess installed post-installation script returned error exit status 3 Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-31-generic Warning: No support for locale: en_US.utf8 Errors were encountered while processing: nvidia-current Error in function: Setting up nvidia-current (295.40-0ubuntu1) ... update-initramfs: deferring update (trigger activated) INFO:Enable nvidia-current DEBUG:Parsing /usr/share/nvidia-common/quirks/put_your_quirks_here DEBUG:Parsing /usr/share/nvidia-common/quirks/dell_latitude DEBUG:Parsing /usr/share/nvidia-common/quirks/lenovo_thinkpad DEBUG:Processing quirk Latitude E6530 DEBUG:Failure to match Gigabyte Technology Co., Ltd. with Dell Inc. DEBUG:Quirk doesn't match DEBUG:Processing quirk ThinkPad T420s DEBUG:Failure to match Gigabyte Technology Co., Ltd. with LENOVO DEBUG:Quirk doesn't match Removing old nvidia-current-295.40 DKMS files... Loading new nvidia-current-295.40 DKMS files... Error! DKMS tree already contains: nvidia-current-295.40 You cannot add the same module/version combo more than once. dpkg: error processing nvidia-current (--configure): subprocess installed post-installation script returned error exit status 3 Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-31-generic Warning: No support for locale: en_US.utf8

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• `make install` fails apparently due to typo, but not in makefile: How to find and fix?

  - by Archelon

  I'm trying to install the fujitsu-usb-touchscreen drivers from here, on Kubuntu 12.04 on my new Fujitsu LifeBook P1630. (See fujitsu-usb-touchscreen on kubuntu 13.04 (64-bit) on P1630: `make` errors.) I downloaded the .zip file, unzipped it, and ran make in the directory thus created; this all worked as expected. However, when I run sudo checkinstall (which invokes make install), things go less well. On the first attempt the installation aborted with the following error: make: execvp: /etc/init.d/fujitsu_touchscreen: Permission denied make: *** [install] Error 127 I eventually resolved this by $ sudo chmod +x /etc/init.d/fujitsu_touchscreen But although a second sudo checkinstall then does not give the execvp error, it still fails at a later stage, and the log (on stdout) shows this dpkg error: dpkg: error processing /home/archelon/fujitsu-touchscreen-driver/cybergene-fujitsu-usb-touchscreen-112fdb75b406/cybergene-fujitsu-usb-touchscreen-112fdb75b406_amd64.deb (--install): unable to create `/sys/module/fujitsu/usb/touchscreen/parameters/touch_maxy.dpkg-new' (while processing `/sys/module/fujitsu/usb/touchscreen/parameters/touch_maxy'): No such file or directory And, indeed, there is no /sys/module/fujitsu/usb/touchscreen/parameters/touch_maxy; there is, however, /sys/module/fujitsu_usb_touchscreen/parameters/touch_maxy, and this is presumably what was intended. But this incorrect filename does not appear in the makefile or any other file in the directory, at least not that I can find. Nor does it appear, as I discovered after running sudo checkinstall --install=no as suggested below, in the .deb package created by checkinstall. Where might such a typographical error be originating, and how would I go about fixing it? Edited to add: I'm viewing the contents of the .deb file with ark, Kubuntu's default tool. It contains only three files: control.tar.gz, data.tar.gz, and debian-binary. data.tar.gz contains the directory tree that appears to match up to the usual root filesystem, with /etc, /lib, /sys, and /usr directories. (Looking at other .deb files on my system, this structure appears to be typical.) Here's a screenshot: . (Full size.) Here's another screenshot showing that control.tar.gz contains three files, one of which is empty: . (Full size.) Here's the actual .deb file: https://www.dropbox.com/s/odwxxez0fhyvg7a/cybergene-fujitsu-usb-touchscreen_112fdb75b406-1_amd64.deb Edited 2013-09-28 to add: After reinstalling Kubuntu 12.04 again, this time recreating the /home partition (which, again, had been generated during an install of 13.04), I can no longer reproduce this error. I am still curious to know how the underscores got changed to slashes, but it looks as though nobody has any idea. It is perhaps also of interest to note that while I have still not successfully run checkinstall against this package, I have done make install; it requires the executabilization of /etc/init.d/fujitsu_touchscreen and the installation of hal, and the GUI freezes shortly after installation completes, and there is no particular new functionality afterwards that I have noticed, and the system can no longer resume from being suspended; however, this will be pursued elsewhere.

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• Data Auditor by Example

  - by Jinjin.Wang

  OWB has a node Data Auditors under Oracle Module in Projects Navigator. What is data auditor and how to use it? I will give an introduction to data auditor and show its usage by examples. Data auditor is an important tool in ensuring that data quality levels meet business requirements. Data auditor validates data against a set of data rules to determine which records comply and which do not. It gathers statistical metrics on how well the data in a system complies with a rule by auditing and marking how many errors are occurring against the audited table. Data auditors are typically scheduled for regular execution as part of a process flow, to monitor the quality of the data in an operational environment such as a data warehouse or ERP system, either immediately after updates like data loads, or at regular intervals. How to use data auditor to monitor data quality? Only objects with data rules can be monitored, so the first step is to define data rules according to business requirements and apply them to the objects you want to monitor. The objects can be tables, views, materialized views, and external tables. Secondly create a data auditor containing the objects. You can configure the data auditor and set physical deployment parameters for it as optional, which will be used while running the data auditor. Then deploy and run the data auditor either manually or as part of the process flow. After execution, the data auditor sets several output values, and records that are identified as not complying with the defined data rules contained in the data auditor are written to error tables. Here is an example. We have two tables DEPARTMENTS and EMPLOYEES (see pic-1 and pic-2. Click here for DDL and data) imported into OWB. We want to gather statistical metrics on how well data in these two tables satisfies the following requirements: a. Values of the EMPLOYEES.EMPLOYEE_ID attribute are three-digit numbers. b. Valid values for EMPLOYEES.JOB_ID are IT_PROG, SA_REP, SH_CLERK, PU_CLERK, and ST_CLERK. c. EMPLOYEES.EMPLOYEE_ID is related to DEPARTMENTS.MANAGER_ID. Pic-1 EMPLOYEES Pic-2 DEPARTMENTS 1. To determine legal data within EMPLOYEES or legal relationships between data in different columns of the two tables, firstly we define data rules based on the three requirements and apply them to tables. a. The first requirement is about patterns that an attribute is allowed to conform to. We create a Domain Pattern List data rule EMPLOYEE_PATTERN_RULE here. The pattern is defined in the Oracle Database regular expression syntax as ^([0-9]{3})$ Apply data rule EMPLOYEE_PATTERN_RULE to table EMPLOYEES.

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• Partial Submit vs. Auto Submit

  - by Frank Nimphius

  Partial Submit ADF Faces adds the concept of partial form submit to JavaServer Faces 1.2 and beyond. A partial submit actually is a form submit that does not require a page refresh and only updates components in the view that are referenced from the command component PartialTriggers property. Another option for refreshing a component in response to a partial submit is call AdfContext.getCurrentInstance.addPartialTarget(component_instance_handle_goes_here)in a managed bean. If a form contains required fields that the user left empty invoking the partial submit, then errors are shown for each of the field as the full form gets submitted. Autosubmit An input component that has its autosubmit property set to true also performs a partial submit of the form. However, this time it doesn't submit the entire form but only the component that triggers the submit plus components referenced it in their PartialTriggers property. For example, consider a form that has three input fields inpA, inpB and inpC with autosubmit=true set on inpA and required=true set on inpB and inpC. use case 1: Running the view, entering data into inpA and then tabbing out of the field will submit the content for inpA but not for inpB and inpC. Further more, none of the required field settings on inpB and inpC causes an error. use case 2: You change the configuration of inpC and set its PartialTriggers property to point to the ID of component inpA. When rerunning the sample, entering a value into inpA and tabbing out of the field will now submit the inpA and inpC fields and thus show an error for the missing required value on inpC. Internally, using autosubmit=true on an input component sets the event root to just this field, which good to have in case of dependent field validation or behavior. The event root can extended to include other components by using the Partial Triggers property on these components to point to the input field that has autosubmit=true defined. PartialSubmit vs. AutoSubmit Partial submit set on a command component submits the whole form and leaves it to the developer to decide which UI component is refreshed in response. Client side required field validation (as well as the server side equivalent) is not disabled by executed in this scenario. Setting immediate=true on the command item to skip validation doesn't help as it would also skip the model update. Auto submit is a functionality on the input components and also performs a partial form submit. However, in addition an event root is defined that narrows the scope for the submitted data and thus the components that are validated on the request. To read more about this topic, see: http://docs.oracle.com/cd/E23943_01/web.1111/b31973/af_lifecycle.htm#CIAHCFJF

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• Insufficient memory issue during Build Process Customization

  - by jehan

  Normal 0 false false false EN-US ZH-CN X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} When customizing the Build Process Template in Workflow designer, I came across the OutOfMemoryException errors while performing Save as Image and Copy operations: "Insufficient memory to continue execution of program"   Normal 0 false false false EN-US ZH-CN X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} There is a fix available on Microsoft Connect  which has resolved the issue.

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• Why is my system freezing when I switch users

  - by ZeroDivide

  Hello I've recently upgraded from 13.04 to 13.10 64bit. I'm running AMD graphics with the proprietary drivers. I have two user accounts. Mine(administrator) and my girlfriend's(standard) My girlfriend clicks "switch user" from my lock screen and logs in fine. I then try to click "switch user" from her lock screen and everything goes black. Then the monitor blinks on and off with just a single cursor. I have no way to access the terminal, the system is unresponsive and I have to hit the power button. Even ctrl + alt + f4 or ctrl + alt + t doesn't get me a terminal. When I press the power button on my system, it does start printing out the shutdown sequence on the monitor. Here is my .xsession-errors Script for ibus started at run_im. Script for auto started at run_im. Script for default started at run_im. Here is hers: init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd main process ended, respawning init: at-spi2-registryd respawning too fast, stopped init: logrotate main process (4726) killed by TERM signal init: upstart-dbus-session-bridge main process (4865) terminated with status 1 init: gnome-settings-daemon main process (4843) terminated with status 1 init: gnome-session main process (4852) terminated with status 1 init: unity-panel-service main process (4863) killed by KILL signal I found some advice in a forum to look for at-spi2-registryd in my system logs. Perhaps it will be useful. executing this: sudo grep -r at-spi2-registryd /var/log/* produces this: /var/log/lightdm/x-1-greeter.log:** (at-spi2-registryd:4384): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files /var/log/lightdm/x-1-greeter.log:** (at-spi2-registryd:4384): WARNING **: Unable to register client with session manager /var/log/lightdm/x-2-greeter.log.old:** (at-spi2-registryd:7447): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files /var/log/lightdm/x-2-greeter.log.old:** (at-spi2-registryd:7447): WARNING **: Unable to register client with session manager /var/log/lightdm/x-0-greeter.log:** (at-spi2-registryd:1378): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files /var/log/lightdm/x-0-greeter.log:** (at-spi2-registryd:1378): WARNING **: Unable to register client with session manager /var/log/lightdm/x-0-greeter.log.old:** (at-spi2-registryd:1357): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files /var/log/lightdm/x-0-greeter.log.old:** (at-spi2-registryd:1357): WARNING **: Unable to register client with session manager Any ideas what is going on?

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• Parallel MSBuild FTW - Build faster in parallel

  - by deadlydog

  Hey everyone, I just discovered this great post yesterday that shows how to have msbuild build projects in parallel Basically all you need to do is pass the switches “/m:[NumOfCPUsToUse] /p:BuildInParallel=true” into MSBuild. Example to use 4 cores/processes (If you just pass in “/m” it will use all CPU cores): MSBuild /m:4 /p:BuildInParallel=true "C:\dev\Client.sln" Obviously this trick will only be useful on PCs with multi-core CPUs (which we should all have by now) and solutions with multiple projects; So there’s no point using it for solutions that only contain one project.  Also, testing shows that using multiple processes does not speed up Team Foundation Database deployments either in case you’re curious Also, I found that if I didn’t explicitly use “/p:BuildInParallel=true” I would get many build errors (even though the MSDN documentation says that it is true by default). The poster boasts compile time improvements up to 59%, but the performance boost you see will vary depending on the solution and its project dependencies.  I tested with building a solution at my office, and here are my results (runs are in seconds): # of Processes 1st Run 2nd Run 3rd Run Avg Performance 1 192 195 200 195.67 100% 2 155 156 156 155.67 79.56% 4 146 149 146 147.00 75.13% 8 136 136 138 136.67 69.85%   So I updated all of our build scripts to build using 2 cores (~20% speed boost), since that gives us the biggest bang for our buck on our solution without bogging down a machine, and developers may sometimes compile more than 1 solution at a time.  I’ve put the any-PC-safe batch script code at the bottom of this post. The poster also has a follow-up post showing how to add a button and keyboard shortcut to the Visual Studio IDE to have VS build in parallel as well (so you don’t have to use a build script); if you do this make sure you use the .Net 4.0 MSBuild, not the 3.5 one that he shows in the screenshot.  While this did work for me, I found it left an MSBuild.exe process always hanging around afterwards for some reason, so watch out (batch file doesn’t have this problem though).  Also, you do get build output, but it may not be the same that you’re used to, and it doesn’t say “Build succeeded” in the status bar when completed, so I chose to not make this my default Visual Studio build option, but you may still want to. Happy building! ------------------------------------------------------------------------------------- :: Calculate how many Processes to use to do the build. SET NumberOfProcessesToUseForBuild=1  SET BuildInParallel=false if %NUMBER_OF_PROCESSORS% GTR 2 (                 SET NumberOfProcessesToUseForBuild=2                 SET BuildInParallel=true ) MSBuild /maxcpucount:%NumberOfProcessesToUseForBuild% /p:BuildInParallel=%BuildInParallel% "C:\dev\Client.sln"

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• Lubuntu wireless issue with Broadcom chipset

  - by Variant Web Solutions

  I'm a web dev that just started a new venture in buying wiped laptops in bulk and selling them at a low cost to lower income families that want a laptop that will simply preform and not become virus ridden and require constant maintenance, so naturally I opted for a linux distro and after some research, lubuntu was my top pick. I'm not a stranger to linux as all of my servers for my web dev business are linux, but I am however new to L/Ubuntu and I'm having some issues with both wifi (broadcom chipsets) on the 20 or so dells that I have right now, D800's, D810's and E5400's. Not sure if you can point me in a solid direction, I've scoured (and implemented) the suggestions on ask ubuntu and still coming up short. On one of the e5400's ( though they all seem to suffer the same errors) I got the following: [code]dell-latitude-e5400@dell-Latitude-E5400:~$ iwconfig lo no wireless extensions. eth0 no wireless extensions. dell-latitude-e5400@dell-Latitude-E5400:~$ lspci 00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07) 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) 00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) 00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02) 00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02) 00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02) 00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02) 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 02) 00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02) 00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02) 00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 92) 00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port SATA Controller [IDE mode] (rev 02) 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02) 00:1f.5 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port SATA Controller [IDE mode] (rev 02) 02:01.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba) 02:01.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04) 02:01.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 21) 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5761e Gigabit Ethernet PCIe (rev 10) dell-latitude-e5400@dell-Latitude-E5400:~$ rfkill Usage: rfkill [options] command Options: --version show version (0.5-1ubuntu1 (Ubuntu)) Commands: help event list [IDENTIFIER] block IDENTIFIER unblock IDENTIFIER where IDENTIFIER is the index no. of an rfkill switch or one of: all wifi wlan bluetooth uwb ultrawideband wimax wwan gps fm nfc dell-latitude-e5400@dell-Latitude-E5400:~$ [/code]

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• changing drive nodes & hdparm

  - by Kalamalka Kid

  I am currently attempting to create a command that works at startup to kill the power on two of my very noisy hard drives. I have edited the etc/rc.local file to include this command: sudo hdparm -y /dev/sdc sudo hdparm -y /dev/sdd exit 0 While I think this should work, it seems the allocated drives keep switching around every time I reboot. I have sda, sdb, sdc, sdd, and sde but they keep getting jumbled around (making the drive I wish to shut different than sdd which is making the task of shutting down the right drive on start-up quite cumbersome. I had a perfectly functioning ftstab file working which disappeard, but I restored it from the back up into the etc/ dir: # <file system> <mount point> <type> <options> <dump> <pass> #Entry for /dev/sda1 : UUID=43c09daf-08a5-44f2-89b0-fc7c6f0d1e67 / ext4 errors=remount-ro 0 1 #Entry for /dev/sdd1 : UUID=443AFBAD7FE50945 /media/DX100 ntfs-3g defaults,nosuid,nodev,locale=en_CA.UTF-8 0 0 #Entry for /dev/sdb1 : UUID=FCE456F5E456B21E /media/GalaxyM83 ntfs-3g defaults,nosuid,nodev,locale=en_CA.UTF-8 0 0 #Entry for /dev/sdf1 : UUID=1CA057FDA057DBB8 /media/Holideck ntfs-3g defaults,nosuid,nodev,locale=en_CA.UTF-8 0 0 #Entry for /dev/sdc1 : UUID=7ABB49654B799D40 /media/JX3P ntfs defaults,nosuid,nodev,locale=en_CA.UTF-8 0 0 it seems every time I boot the order of the drives changes. I do not know how to resolve this. A quick workaround the problem was to go with UUID instead of the DEV letter by editing the etc/rc.local file to include: hdparm -y /dev/disk/by-uuid/443AFBAD7FE50945 hdparm -y /dev/disk/by-uuid/7ABB49654B799D40 So I thought I was in the clear, as I heard both hard drives die down during the boot sequence, BUT, as soon as I log in both drives start up again! so now I have to figure out what is making them start up again after log in, or perhaps another way to get them to turn off. Is there some kind of command i can get to execute after log in? I tried editing the startup applications to include an autossh with: autoshh - sudo hdparm -y /dev/disk/by-uuid/7ABB49654B799D40 autoshh - sudo hdparm -y /dev/disk/by-uuid/443AFBAD7FE50945 but this did not seem to work to turn off the disks after log in.

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• No GRUB Screen or recovery mode on Boot after 12.04 Upgrade

  - by Nick

  I tried the live boot CD and boot-repair, also loaded the Desktop install CD, and it looks like all partitions check out OK. However, when I try to boot Linux (the only bootable partition on the computer) I get a blank screen. Every so often the screen give me something akin to: Assuming write through cache Asking for cache data failed it appears to start booting, then hangs. Ctrl+Alt+Delete shuts down the machine The last message during boot is "STarting TiMidity++ ALSA midi emulation... [OK]" I used boot-repair to generate a boot info report. One thing looks odd to me- it reports a missing core.img on /dev/sda1. Here is the full info: Boot Info Script 0.61.full + Boot-Repair extra info [Boot-Info August 2nd 2012] ============================= Boot Info Summary: =============================== = Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks for (,msdos1)/boot/grub on this drive. = Windows is installed in the MBR of /dev/sdb. sda1: __________________________________________ File system: ext4 Boot sector type: Grub2 (v1.99) Boot sector info: Grub2 (v1.99) is installed in the boot sector of sda1 and looks at sector 18406911 of the same hard drive for core.img, but core.img can not be found at this location. Operating System: Ubuntu 12.04.1 LTS Boot files: /boot/grub/grub.cfg /etc/fstab /boot/extlinux/extlinux.conf /boot/grub/core.img sda2: __________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sda5: __________________________________________ File system: swap Boot sector type: - Boot sector info: sdb1: __________________________________________ File system: ntfs Boot sector type: Windows XP: NTFS Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files: ============================ Drive/Partition Info: ============================= Drive: sda _______________________________________ Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start Sector End Sector # of Sectors Id System /dev/sda1 * 63 307,339,514 307,339,452 83 Linux /dev/sda2 307,339,515 312,576,704 5,237,190 5 Extended /dev/sda5 307,339,578 312,576,704 5,237,127 82 Linux swap / Solaris Drive: sdb _______________________________________ Disk /dev/sdb: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start Sector End Sector # of Sectors Id System /dev/sdb1 2,048 625,142,447 625,140,400 7 NTFS / exFAT / HPFS "blkid" output: ____________________________________ Device UUID TYPE LABEL /dev/loop0 squashfs /dev/sda1 11b4d633-7863-40b2-a6ca-da5f82c3ad0b ext4 /dev/sda5 cb8d65f4-8cf9-4088-b804-e3dea2151033 swap /dev/sdb1 349E7C109E7BC8BE ntfs Personal1 ================================ Mount points: ================================= Device Mount_Point Type Options /dev/sdb1 /media/Personal1 fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions) /dev/sr0 /live/image iso9660 (ro,noatime) ...(a bunch of config file info- let me know if anyone wants to see it!) But usually I just get "Cannot Display This Video Mode", which I know means the video output is not usable by the monitor. I'm looking for a way to get into a recovery mode.I'd really like to avoid wiping the drive. Any thoughts?

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• What layer to introduce human readable error messages?

  - by MrLane

  One of the things that I have never been happy with on any project I have worked on over the years and have really not been able to resolve myself is exactly at what tier in an application should human readable error information be retrieved for display to a user. A common approach that has worked well has been to return strongly typed/concrete "result objects" from the methods on the public surface of the business tier/API. A method on the interface may be: public ClearUserAccountsResult ClearUserAccounts(ClearUserAccountsParam param); And the result class implementation: public class ClearUserAccountsResult : IResult { public readonly List<Account> ClearedAccounts{get; set;} public readonly bool Success {get; set;} // Implements IResult public readonly string Message{get; set;} // Implements IResult, human readable // Constructor implemented here to set readonly properties... } This works great when the API needs to be exposed over WCF as the result object can be serialized. Again this is only done on the public surface of the API/business tier. The error message can also be looked up from the database, which means it can be changed and localized. However, it has always been suspect to me, this idea of returning human readable information from the business tier like this, partly because what constitutes the public surface of the API may change over time...and it may be the case that the API will need to be reused by other API components in the future that do not need the human readable string messages (and looking them up from a database would be an expensive waste). I am thinking a better approach is to keep the business objects free from such result objects and keep them simple and then retrieve human readable error strings somewhere closer to the UI layer or only in the UI itself, but I have two problems here: 1) The UI may be a remote client (Winforms/WPF/Silverlight) or an ASP.NET web application hosted on another server. In these cases the UI will have to fetch the error strings from the server. 2) Often there are multiple legitimate modes of failure. If the business tier becomes so vague and generic in the way it returns errors there may not be enough information exposed publicly to tell what the error actually was: i.e: if a method has 3 modes of legitimate failure but returns a boolean to indicate failure, you cannot work out what the appropriate message to display to the user should be. I have thought about using failure enums as a substitute, they can indicate a specific error that can be tested for and coded against. This is sometimes useful within the business tier itself as a way of passing via method returns the specifics of a failure rather than just a boolean, but it is not so good for serialization scenarios. Is there a well worn pattern for this? What do people think? Thanks.

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• Oracle HCM Cloud Customer Q&A with WAXIE Sanitary Supply

  - by HCM-Oracle

  At this year’s Oracle HCM User Group (OHUG) Global conference, we had the opportunity to sit down with Oracle HCM Cloud customers for a short Q&A. We got to hear about what brought them to the OHUG conference, some of the benefits they are receiving from their Oracle HCM Cloud solutions, and advice they would give other businesses looking to move to the cloud.  Below is a discussion we had with Melissa Halverson, Benefits & HRIS Manager at WAXIE Sanitary Supply.  Q: What made you attend the OHUG Global Conference this year? Halverson: The biggest reason is networking. It allows me to connect with others in the Oracle HCM Cloud community. I was able to speak at the HCM Cloud SIG (Special Interest Group) on the first day and share my experiences as well as hear the experiences of other Oracle HCM Cloud users. It also allows me to get face-time with key people within Oracle.  Q: What Oracle HCM solutions are you currently using? Halverson: Global HR, Benefits, Workforce Compensation, and Performance Management. Q: Do you plan to invest further in Oracle HCM? Halverson: Yes, we are interested in Time and Labor. We would also like to get Recruiting at some point in the future. Q: What would you say is the most significant benefit you’ve realized from your use of Oracle HCM solutions? Halverson: First and foremost would be process improvement. Before we had Oracle HCM Cloud we relied on a paper process where something as simple as an employee address change required changes to be made manually in 9 different systems. Obviously that was extremely inefficient, but also increased the likelihood of errors being made.  The other huge benefit we have seen was in making information visible to the people that need it. Prior to implementing Oracle HCM Cloud, it was very difficult for anyone to access and make use of the information in our systems. Now, we can provide this information to those who need it to make better decisions.  Q: What advice would you give an organization looking to move their HR systems to the cloud? Halverson: One thing I think many organizations don't spend enough time doing is thoroughly vetting their implementation partner. I believe you should be vetting your implementation partner as much as you did the system itself. Also, manpower is so important. Involve as large a team as possible because you don’t want to get stuck having too few bodies to help out. And set realistic time frames. Biting off more than you can chew will inevitably result in failure. Having a phased approach is always best rather than trying to do everything at once. Thanks for the tips Melissa. Enjoy the rest of the conference!

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• Ubuntu 12.04.3 Graphics Issues: Broken Pipes, Reinstalled Xorg and Bumblebee

  - by user190488

  It seems I have a problem, and am only making it worse by following what I find online. I have a new Asus N550JV-D71 (not sure about the part after the dash, though I definitely know it includes 71). I decided to downgrade Windows 8 to 7, then dual boot Ubuntu 12.04 with it (there were issues with Windows 8, and I had a Windows 7 disk handy). It did work and, after installing Bumblebee in tty (because it wouldn't boot when it was first installed), it worked marvelously for a little less than a week. However, I restarted it last night and got the Could not write bytes: Broken pipes error. (I see it's a very common error, but I've looked at the majority of the suggested Similar Questions already.) I followed what I could find online, followed those instructions (making sure to not install any sort of graphics drivers other than what Bumblebee provides), and it just seems to go further and further downhill. I'm afraid I didn't write the exact steps to get to this point (it was late by the time I gave up the night before), but it involved reinstalling lightdm, xorg (and xserver?), and Bumblebee. I then changed the Bumblebee.conf file so that Device=nvidia. I'm pretty new to Linux in general (I've used it since 10.04, but I hadn't had issues up until this computer, so it let me stay a newbie), so I'm not exactly sure what log files to look at to find the errors to look up. However, I did look at lshw and noticed that displays was marked as unassigned. Also, if I try to start lightdm using the command line, it always stops at Stopping Mount network filesystems. I should note that there isn't an xorg.conf file, and no .Xauthority. I would really, really prefer not to reinstall 12.04 if possible. I managed to get grub to display only a short time ago, and I can't boot to the dvd drive unless I go into the BIOS settings and manually change the boot order (that was an issue from the beginning, before the Ubuntu install), and getting into those settings often means rebooting several times due to the fact that the window to get to it is extremely small. I have most of what I need backed up, however, in case it does get to that point. If I really have to, I can just use the latest Ubuntu version instead of the LTS, but the reason I chose 12.04 in the first place is because I need something stable-ish, and Windows isn't suitable to what I need to do. I should note that the reason I restarted last night in the first place was that it wasn't charging the battery, and the wifi kept on going out. Hardware: Nvidia GeForce GT 750M Intel HD graphics 4600

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• Error while removing the new kernel 2.6.37

  - by Tarek

  Hi! I tried to install the new kernel but something went wrong and I'm trying to remove it now. The error massege is: mhd@Tarek-Laptop:~$ sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: linux-image-2.6.37-020637-generic 0 upgraded, 0 newly installed, 1 to remove and 9 not upgraded. 1 not fully installed or removed. After this operation, 111MB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 188780 files and directories currently installed.) Removing linux-image-2.6.37-020637-generic ... Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 2.6.37-020637-generic /boot/vmlinuz-2.6.37-020637-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 2.6.37-020637-generic /boot/vmlinuz-2.6.37-020637-generic /etc/default/grub: 33: Syntax error: EOF in backquote substitution run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 2 Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-2.6.37-020637-generic.postrm line 328. dpkg: error processing linux-image-2.6.37-020637-generic (--remove): subprocess installed post-removal script returned error exit status 1 Errors were encountered while processing: linux-image-2.6.37-020637-generic E: Sub-process /usr/bin/dpkg returned an error code (1) The previous unsloved error is on this bug. This is my grub configuration file: # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` RUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset video=uvesafb:mode_option=1024x768-24,mtrr=3,scroll=ywrap" video=uvesafb:mode_option=>>1024x768-24<<,mtrr=3,scroll=ywrap" GRUB_CMDLINE_LINUX=" vga=792 splash" # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' GRUB_GFXMODE=1024x768-24 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_LINUX_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" thank you for answering.

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