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• How to adjust the appearance of the Unity in 12.10?

  - by piedro

  Now I updated to 12.10 and would like to adjust the desktop, well unity, appearance. I know there is the theme setting, but I cannot adjust the symbol theme or windows decoration with the systemsettings. I used to use the tool "unsettings" but it doesn't work with 12.10 anymore. Ubuntu Tweak used to be an option but at this point many features are broken and a lot of settings seem to mess up my system or they don't change anything at all (I understand that there has been a design settings change - gsettings, dconf, something ...) myunity has some options to change stuff but I couldn't find it for 12.10 ... not to forget "gnome-tweak-tool" which seems to work for most settings but not for all, e.g. it doesn't change the mouse cursor and the windows decorations do not show some decorations I'd like to use and I am also afraid of messing things up because it is supposed to be used in gnomeshell ... actually as I found out right now it really messes things up: fonts get inverted, suddenly high contrast accessibility setings are used in some windows, nautilus has white fonts on white background and even the login manager is a mess now ... So: How can I adjust the theme, symbol, decorations, fonts for the normal user and for the desktop and for the applications including the applications started as sudo user? I should mention that I upgraded from 12.04 and that some applications like synaptic completely ignore any settings ... sadly it is a mess, there was a time when gnome theming was really well done and very adjustable, I wonder what happened ... Just now I read that further development of Ubuntu Tweak has been stopped. The developer announced that he won't go any further with the software and the online services ... That is sad and destroys my hope for easy appearance editing just by waiting ... has been such a nice tool for 12.04 ... r.i.p.

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• Microsoft Access as a Weapon of War

  - by Damon

  A while ago (probably a decade ago, actually) I saw a report on a tracking system maintained by a U.S. Army artillery control unit.  This system was capable of maintaining a bearing on various units in the field to help avoid friendly fire.  I consider the U.S. Army to be the most technologically advanced fighting force on Earth, but to my terror I saw something on the title bar of an application displayed on a laptop behind one of the soldiers they were interviewing: Tracking.mdb Oh yes.  Microsoft Office Suite had made it onto the battlefield.  My hope is that it was just running as a front-end for a more proficient database (no offense Access people), or that the soldier was tracking something else like KP duty or fantasy football scores.  But I could also see the corporate equivalent of a pointy-haired boss walking into a cube and asking someone who had piddled with Access to build a database for HR forms.  Except this pointy-haired boss would have been a general, the cube would have been a tank, and the HR forms would have been targets that, if something went amiss, would have been hit by a 500lb artillery round. Hope that solider could write a good query :)

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• ProStar gaming laptop, which had Ubuntu 10.10, won't boot past Grub. Thoughts?

  - by Richard Zak

  At work we have some high-end gaming laptops we use for their dual GPUs. The machines have second generation i7 CPUs, and came with Windows 7. On most of them I installed Ubuntu 10.10, and all was fine. There were two laptops that I wanted to repurpose and wanted to reinstall the OS. It boots the CD (burned Ubuntu installation CD, I've tried 10.10, 11.10, and 12.04, as well as CentOS 6), and when Grub tried to boot the kernel, I just get a cursor blinking in the upper left corner of the screen. I tried the disabling of ACPI and the other items in the advanced menu, but nothing works. I could still boot to the current Linux installation though. I was able to install Windows 7 again, and use WUBI, but I think that works because it uses the Windows bootloader and not Grub. How could it have worked before and not now? I have confirmed that the CD is fine, as are the hard drive and CD drive. I also had the same problem with Debian, and had to boot through Windows 7 to install it.

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• Buffer System For Items

  - by Ohmages

  I am going to reference this image of what I want to accomplish in JavaScript. This is the Diablo buffer system. This question may be a bit advanced (or possibly not even allowed). But I was wondering how you might go about implementing this type of system in a JavaScript game. Currently to implement such a system in JavaScript escapes me, and I am turning to SO to get some suggestions, ideas, and hopefully some insight in how I could accomplish this without being to costly on the CPU. Some thoughts of mine for implementing such a system would be to: Create DIVS within a DIV that hold each position of the inventory Go through each item you own in a container and see which DIV it belongs to Make said item images the DIVs image This type of system might possibly work if ALL items were 1x1, but for this example its not going to work out. I am at a complete lost of ideas how to even accomplish this. Although, maybe rendering directly to the canvas and checking mouse cords could work, there would more than likely be A HUGE annoyance when checking if other items are overlapping each other (meaning you cant place the item down, and possibly switching item with the cursor item ). That said, what am I left with? Do I need to makeshift my own hack system with messy code, or is there some source out there (that I don't know about) that has replicated this type of system in their own game. I would be very grateful to get some replies on how you might go about doing this, and will accept answers that can logically explain how you might implement such a system (code is not required). P.S. Id like to use pure JavaScript, and nothing else (even though it might be "reinventing the wheel", I also like to learn).

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• How is determined an impact of a requirement change on the existing code?

  - by MainMa

  Hi, How companies working on large projects evaluate an impact of a single modification on an existing code? Since my question is probably not very clear, here's an example: Let's take a sample business application which deals with tasks. In the database, each task has a state, 0 being "Pending", ... 5 - "Finished". A new requirement adds a new state, between 2nd and 3rd one. It means that: A constraint on the values 1 - 5 in the database must be changed, Business layer and code contracts must be changed to add a new state, Data access layer must be changed to take in account that, for example the state StateReady is now 6 instead of 5, etc. The application must implement a new state visually, add new controls for it, new localized strings for tool-tips, etc. When an application is written recently by one developer, it's more or less easy to predict every change to do. On the other hand, when an application was written for years by many people, no single person can anticipate every change immediately, without any investigation. So since this situation (such changes in requirements) is very frequent, I imagine there are already some clever techniques and ways to predict the impact. Is there any? Do you know any books which deal about this subject? Note: my question is not related to How do you deal with changing requirements? question. In fact, I'm not interested in evaluating the cost of a change, but rather the way to predict the parts of an application which will be concerned by the change. What will be those changes and how difficult they are really doesn't matter in my question.

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• Touchpad stops working after desktop shows up

  - by gsedej

  Hi! I have problem with touch-pad. It is not working correctly. It goes like this. When laptop is booting, right after desktop shows, I can move mouse with touch-pad for a second, but when icons shows up, touch-pad does not want to move cursor at all. Even buttons stops work. The same problem with Ubuntu 10.04 and Ubuntu 10.10 I can see "Touchpad" tab in "Mouse" menu, and I can even set "two finger scrolling". I checked in gconf-editor under "desktop-gnome-pheriferals-touchpad" and it's enabled. Furthermore I checked xinput and it is as it should be: SynPS/2 Synaptics TouchPad id=11 [slave pointer (2)]. I tried to create new master reattach but still nothing... EDIT: Laptop has fn + F7 to control touch-pad. Ubuntu shows bobble showing touchpad OFF and touchpad ON. But it does nothing. No matter if it say ON, it still does not work.

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• Caching by in-memory dictionaries. Are we doing it all wrong?

  - by user73983

  This approach is pretty much the accepted way to do anything in our company. A simple example : when a piece of data for a customer is requested from a service, we fetch all the data for that customer(relevant part to the service) and save it in a in-memory dictionary then serve it from there on following requests(we run singleton services). Any update goes to DB, then updates the in memory dictionary. It seems all simple and harmless but as we implement more complicated business rules the cache gets out of sync and we have to deal with hard to find bugs. Sometimes we defer writing to database, keeping new data in cache till then. There are cases when we store millions of rows in memory because the table has many relations to other tables and we need to show aggregate data quickly. All this cache handling is a big part of our codebase and I sense this is not the right way to do it. All of this juggling adds too much noise to the code and it makes it hard to understand the actual business logic. However I don't think we can serve data in a reasonable amount of time if we have to hit the database every time. I am unhappy about the current situation but I don't have a better alternative. My only solution would be to use NHibernate 2nd level cache but I have nearly no experience with it. I know many campanies use Redis or MemCached heavily to gain performance but I have no idea how I would integrate them into our system. I also don't know if they can perform better than in-memory data structures and queries. Are there any alternative approaches that I should look into?

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• Triple-display setup using AMD drivers

  - by Halik

  I am currently running a dual display setup with nVidia 8800GTS video card, on a Ubuntu 12.10 box. The current setup uses nVidia TwinView to render the image on a 1920x1200 display and 1600x1200 one. I'm planning to add a third, 1280x1024 display to the setup. The change will require me to upgrade my GFX card to one supporting triple displays. I'll probably go with Sapphire Radeon 7770 (FLEX edition, to avoid additional active DP-DVI adapters). Before I invest in new GFX I wanted to ask - how well the AMD drivers will support such a setup. It does not matter whether it's fglrx or the OSS ones. If I remember correctly, when running Fedora on a Radeon x800, I had 'void' areas above and below the working area on my second display. The desktop was rendered in 1920+1280 width and 1200 height (which left 176px of vertical space accessible for my cursor and windows but not displayed on the screen - I'd prefer to avoid that). It may have very well been my misconfiguration back then. Generally, are there any solutions from AMD on par with TwinView? Or is it a non-issue at all? Also, I'm wondering about the usual stuff - hardware h264 decoding support, glitch-free flash support, any issues with Compiz/Unity?

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• Hosting and scaling a Facebook application in the cloud? [migrated]

  - by DhruvPathak

  We would be building a Facebook application in Django (Python), but still not sure of where to host it economically, and with a good provision to scale in case the app gets viral. Some details about the app: Would be HTML based like a website,using django as a framework. 100K is the number of expected pageviews in a day, if the app is viral. The users will not generate any media content, only some database data will be generated by them. It would be great if someone with more experience can guide on following points: A) Hosting on Google app engine or Amazon EC2 or some other cloud like RackSpace : Preferable points found in AppEngine were ease of deployment, cost effectiveness and easy scaling. For EC2: Full hold of the virtual machine,Amazon NoSQL and RDMBS database services in case we decide to use them. B) Does backend technology affect monthly cost? eg. would CPU and memory usage difference of Django over , for example , PHP framework like CodeIgnitor really make remarkable difference in running costs. (Here is the article that triggered this thought process : http://journal.dedasys.com/2010/01/12/rough-estimates-of-the-dollar-cost-of-scaling-web-platforms-part-i#comments) C) Does something like Heroku , which provides additional services over Amazon EC2, prove to be better than raw cloud management? It is not that we are trying for premature scaling, we just want to have a good start so that we are ready to handle unpredicted growth and scale.

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• What should I recommend a small company looking for C# developers

  - by Coder

  Here is the issue. I am a senior developer, and one of the start-ups I designed the system (management system/database/web) a long time ago, have grown and need software updates. I have left their system to another developer long time ago, but apparently he has left the job, and so they are asking me if I can suggest them where to find a new one. The problem is that the company has no clue that the IT is not cheap. They expect multiple features to be added for 40$, so that's an issue. Actually one of the reasons why I left the project when I did. Lots of expectations, little pay, also I know those people outside work, so I decided to avoided stressing the nonwork-relationships and left the project gracefully. Today they asked me for an advice, and I told them that the feature list they want is probably going to cost some if they'll get a senior developer for the job. So I guess their best bet is to find someone who loves coding and has just finished the school. Which would give someone a chance to code for money which is good for a student, and at the same time, allow the student to get some hands on experience. Then again, the system is not exactly 20 line console program, there is an MSSQL database, ASP.NET web page and content management system with all the AJAX stuff and some other things. So student straight out of school could have some problems with that. But, I thought about the issue some more, and I think that junior developer is a tricky deal, without mentoring, he can either screw up royally, or just do what's asked. Also, it seems no one is coming to interviews at all, which is weird, or maybe not. What should I suggest them?

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• Oracle Open World / Public Sector / Identity Platform

  - by user12604761

  For those attending Oracle Open World (Oct. 1st - 3rd, 2012 at the Moscone Center in San Francisco), the following details are recommended:  OOW Focus on Public Sector. Also, Oracle's foundational Identity and Access Management and Database Security products that support government security ICAM solutions are covered extensively during the event, the following will be available: The focus is on Oracle's Modern Identity Management Platform.   Integrated Identity Governance Mobile Access Management Complete Access Management Low Risk Upgrades The options for attendees include 18 sessions for Identity and Access Management, 9 Identity and Access Management demonstration topics at the Identity Management Demo Grounds, and 2 hands on labs, as well as 21 database security sessions. Oracle Public Sector Reception at OOW:  Join Oracle's Public Sector team on Monday, October 1 for a night of food and sports in a casual setting at Jillian’s, adjacent to Moscone Center on Fourth Street. In addition to meeting the Public Sector team, you can enjoy Monday Night Football on several big screen TVs in a fun sports atmosphere. When: Monday, October 1, 6:30 p.m.–9:30 p.m. Where: Jillian's, 101 Fourth Street, San Francisco 

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• Places to store basic data

  - by Ella

  I am using PHP. I'm building a fully modular CMS, which is destined for the public. Some people might view this as a framework, but I intend to write a set of extensions for it, extensions that will make it a CMS :P Because it's completely modular I have a problem figuring out how to load extensions. Practically I need to get the list of active extensions, so I can load them inside my base class. I load them by reading some file headers, which contain a "dependency" field. That field decides the order in which I have to instantiate the objects. The problem is that when the CMS starts I have no database interface, because that's an extension too, so I can't store the active extensions list in the database :) You might ask how are extensions activated in the first place. Well - in the administration interface, which is an extension as well (obviously on first install of the CMS there will be some extensions active by default). Could writing that list inside a text file be a solution? The problem is that a lot of hosts are not very nice with scripts when they write files. And since this CMS is public I might have a problem here?

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• Never Bet Against the Impossible

  - by BuckWoody

  My uncle used to say “If a man tells you that his car squirts milk in his eye when you lift the hood, don’t bet against that. You’ll end up with milk in your eye.” My friend Allen White tells me this is taken from a play (and was said about playing cards), but I think the sentiment holds, even in database work. I mentioned the other day that you should allow the other person to talk and actively listen before you propose a solution. Well, I saw a consultant “bet against the impossible”  the other day – and it bit her. She explained to the person telling her the problem that the situation simply couldn’t exist that way, and he proceeded to show her that it did. She got silent, typed a few things, muttered a little, and then said “well, must be something else.” She just couldn’t admit she was wrong. So don’t go there. If someone explains a problem to you with their database, listen with purpose, and then explore the troubleshooting steps you know to find the problem. But keep your absolutes to yourself. In fact, I have a friend that has recently sent me one of those. He connects to a system with SQL Server Management Studio (SSMS) version 2008 (if I recall correctly) and it shows a certain version number of the target system in the connection tab. Then he connects to it using SSMS 2008 R2 and gets a different number. Now, as far as I know, we didn’t change the connection string information, and that’s provided by the target system, so this is impossible. But I won’t tell him that. Not until I look a little more. :) Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Select Data From XML in MS SQL Server (T-SQL)

  - by Doug Lampe

  So you have used XML to give you some schema flexibility in your database, but now you need to get some data out.  What do you do?  The solution is relatively  simple:   DECLARE @iDoc INT /* Stores a pointer to the XML document */ DECLARE @XML VARCHAR(MAX) /* Stores the content of the XML */   set @XML = (SELECT top 1 Xml_Column_Name FROM My_Table where Primary_Key_Column = 'Some Value')   EXEC sp_xml_preparedocument @iDoc OUTPUT, @XML   SELECT * FROM OPENXML(@iDoc,'/some/valid/xpath',2)                      WITH (output_column1_name varchar(50)  'xml_node_name1',                                                     output_column2_name varchar(50)  'xml_node_name2')   EXEC sp_xml_removedocument @iDoc   In this example, the XML data would look something like this:   <some>   <valid>     <xpath>       <xml_node_name1>Value1</xml_node_name1>       <xml_node_name2>Value2</cml_node_name2>     </xpath>   </valid> </some>   The resulting query should give you this:   output_column1_name    output_column2_name ------------------------------------------ Value1                 Value2   Note that in this example we are only looking at a single record at a time.  You could use a cursor to iterate through multiple records and insert the XML data into a temporary table.

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• Retrofit WebForms with ASP.NET MVC - NoVa Code Camp 2010.2 Demo

  - by Soe Tun

  Thank you to everyone who attended my Retrofit WebForms with ASP.NET MVC session at NoVa Code 2010.2. It was a fun event for me and I hope you had a great time and learned something from it. I wish I had more time to go over some more important topics in more detail. I *promise* I will be writing blog post series about it since I'll have some vacation time during the December holidays to cover some topics that I didn't get to cover in detail.   Please note that the ".bak" file included in the zip file is a SQL Server Database backup file. You have to restore it on your Database server to run it with the source code demo.   Please feel free to ask me about the demo project through Twitter or from this blog post. I'll be glad to help you out. If you want me to give this presentation at your .NET User Group, please let me know and I'll be honored to speak there also.   Again, thank you all and have a great holiday season. Here is the download link to my Demo project Zip file with the PowerPoint presentation in it. Please let me know if the link doesn't work.

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• Grub problem - Command prompt

  - by RhZ

  Update: Thanks to all who helped. I gave up and am going to re-install. Not the end of the world, no files will be lost :-) This time will be backing up grub haha. Thanks again, I really appreciate the community's help on this. I was going along fine when the new pae kernel came down, and it had some bug where the sound was all messed up. So I used startup manager to choose the older pae kernel and rebooted. But startupmanager must have fuXXored my grub. When I re-booted, I get thrown directly into memtest and thats it. I tried to re-install grub using the live disc method that I found in many places. That changed something so I get a prompt and the message: "GNU grub version 1.99 ubuntu. Minimal BASH-like editing is supported. Type help for complete list." But then I tried the live CD fix again and now am back at the memtest... What can I do to get my system running again? UPDATE: Just to be clear,when I start up I get a blinking cursor in the top left, and the word 'ON' in the middle of the screen. Then, after a good minute or two, the memtest starts.

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• Ubuntu 14.04: Fine tuning Touchpad for ThinkPad S431

  - by ramgorur

  I am using Ubuntu 14.04 on Lenovo ThinkPad S431. The touchpad is very bumpy, tricky to use. Slides down with a small touch, sometimes jerks erratically. I have tried to modify the settings in /usr/share/X11/xorg.conf.d/50-synaptics.conf file as below -- Section "InputClass" Identifier "touchpad catchall" Driver "synaptics" MatchIsTouchpad "on" MatchDevicePath "/dev/input/event*" Option "JumpyCursorThreshold" "250" Option "VertResolution" "100" # Option "HorizResolution" "65" # Option "MinSpeed" "1" # Option "MaxSpeed" "1" # Option "AccelerationProfile" "1" # Option "AdaptiveDeceleration" "8" # Option "ConstantDeceleration" "1" # Option "VelocityScale" "128" Option "HorizHysteresis" "150" Option "VertHysteresis" "150" EndSection There are lots of options here, does anyone know how to get a fine-tuned values for the above options (for ThinkPad S431)? The Hysteresis values seems to alleviate the problem a little bit, but failed to get a perfect result. EDIT: According to this bug report for ThinkPad X230 (+X230t), I set these values and quite good for now -- Option "VertResolution" "100" Option "HorizResolution" "65" Option "MinSpeed" "1" Option "MaxSpeed" "1" Option "AccelerationProfile" "2" Option "AdaptiveDeceleration" "16" Option "ConstantDeceleration" "16" Option "VelocityScale" "32" Option "HorizHysteresis" "50" Option "VertHysteresis" "50" and then you need to increase the cursor speed manually from the Unity mouse settings. But I am still looking for a fully functional (possibly with all the gestures) and a fine-tuned touchpad settings for S431. Further help is appreciated.

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• auto tabbing not working on iphone

  - by Sarita

  I have problem with auto tabbing on Iphone or android. This auto tabbing code work perfectly on each browser of pc but not on mobile. please help me. its urgent. $(document).ready(function() { WireAutoTab('<%= PartOne.ClientID %', '<%= PartTwo.ClientID %', 3); WireAutoTab('<%= PartTwo.ClientID %', '<%= PartThree.ClientID %', 2); }); function WireAutoTab(CurrentElementID, NextElementID, FieldLength) { //Get a reference to the two elements in the tab sequence. var CurrentElement = $('#' + CurrentElementID); var NextElement = $('#' + NextElementID); CurrentElement.keyup(function(e) { //Retrieve which key was pressed. var KeyID = (window.event) ? event.keyCode : e.keyCode; //If the user has filled the textbox to the given length and //the user just pressed a number or letter, then move the //cursor to the next element in the tab sequence. if (CurrentElement.val().length >= FieldLength && ((KeyID >= 48 && KeyID <= 90) || (KeyID >= 96 && KeyID <= 105))) NextElement.focus(); }); }

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• What is the best way for an experienced developer to work on a WordPress blog

  - by nanothief

  I'm beginning to work on my first WordPress blog, however I've noticed most tutorials just have you do modifications (such as theme changes, installing plugins) on the production site. This worries me for a few reasons: No backups No version control If you make a mistake, your production site is affected Developing remotely is slower than local development, especially when tweaking css files. I understand why WordPress works like this - it allows people with no development experience to manage their WordPress installation (or the one provided by their service provider). It also allows you to work on the WordPress installation without having ssh access to the server. However as I am confortable working with tools like git and ssh, and am using a virtual server for the blog, this isn't very important to me. So I was wondering what techniques experienced developers use when working on a WordPress blog. For example: Do you develop locally, then push the changes to the live site? How do you do this? How do you manage database changes and backups? What do you store under version control (if anything)? If a plugin changes the database, do you somehow track the changes it does in version control, so you can rollback the changes done by the plugin if you need to? Or maybe I'm just overcomplicating everything if working on the production site isn't as risky as I am thinking it would be. I would appreciate any answers either way.

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• Problem in my terminal related clamav

  - by Hejar Hejar

  Recently I decided to use Avast Antivirus. I uninstalled clamav and installed Avast. Now whenever I use my terminal I get the following errors.: 5 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/1,250 kB of archives. After this operation, 5,120 B of additional disk space will be used. Do you want to continue [Y/n]? y (Reading database ... dpkg: warning: files list file for package `clamav-daemon' missing, assuming package has no files currently installed. dpkg: warning: files list file for package `python-pyclamav' missing, assuming package has no files currently installed. dpkg: warning: files list file for package `clamav-base' missing, assuming package has no files currently installed. dpkg: warning: files list file for package `clamav-freshclam' missing, assuming package has no files currently installed. dpkg: warning: files list file for package `libclamav6' missing, assuming package has no files currently installed. dpkg: warning: files list file for package `python-clamav' missing, assuming package has no files currently installed. (Reading database ... 554940 files and directories currently installed.) Please help. Thank you

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• Assigning a script to a keystroke to toggle touchpad

  - by sodiumnitrate

  Since my default sony vaio shortcuts don't completely work in Ubuntu 12.04, I'd like to assign a script to Fn + F1, which toggles the touchpad on and off, so that the cursor would stop moving while I'm typing. Since I use a mouse and rarely need to use the touchpad, I don't want to use "disable touchpad while writing", which doesn't really seem to work anyway. I figured that using a script with the following command (this works, but I have to open up a terminal each time): xinput set-prop 12 "Device Enabled" 0 I have two problems at this point. One is that I don't know how to write this script so that it will toggle it off if it is on, and on if it is off. I know I should use an if statement but I don't know what value I should be checking to see if it is on or off. The second one is that I am having problems creating a new shortcut. I use System Settings - Keyboard - Shortcuts. I tried to add, to custom shortcuts, a new one by clicking the '+' sign. I named it Toggle Touchpad, and added the path to the executable script with the line above, by typing /home/irem/.toggletouchpad I have made it an executable with chmod. The problem is that when I click apply, and then click back on it to define the keystroke, it re-opens the dialogue. I cannot define new keys. (It says disabled on the right column of the entry). I have also tried xbindkeys, which almost constantly crashes. I'd prefer the system settings, if I can set the shortcut. I'd appreciate if anyone can help. Thanks.

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• EE vs Computer Science: Effect on Developers' Approaches, Styles?

  - by DarenW

  Are there any systematic differences between software developers (sw engineers, architect, whatever job title) with an electronics or other engineering background, compared to those who entered the profession through computer science? By electronics background, I mean an EE degree, or a self-taught electronics tinkerer, other types of engineers and experimental physicists. I'm wondering if coming into the software-making professions from a strong knowledge of flip flops, tristate buffers, clock edge rise times and so forth, usually leads to a distinct approach to problems, mindsets, or superior skills at certain specialties and lack of skills at others, when compared to the computer science types who are full of concepts like abstract data types, object orientation, database normalization, who speak of "closures" in programming languages - things that make little sense to the soldering iron crowd until they learn enough programming. The real world, I'm sure, offers a wild range of individual exceptions, but for the most part, can you say there are overall differences? Would these have hiring implications e.g. (to make up something) "never hire an electron wrangler to do database design"? Could knowing about any differences help job seekers find something appropriate more effectively? Or provide enlightenment or some practical advice for those who find themselves misfits in a particular job role? (Btw, I've never taken any computer science classes; my impression of exactly what they cover is fuzzy. I'm an electronics/physics/art type, myself.)

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• Synchronizing 3 servers over IP

  - by user93078

  I'm setting up a medical server for a hospital that has doctors located in 3 different locations, meaning there would be 3 servers (1 in each location). All 3 servers would just have the following software: Ubuntu Server 12.04 minimal MySQL, PHP 5, Apache The medical software which would read/write to the MySQL database Remote admin apps like Nagios & Webmin Rsync for backup (rsync-over-ssh) as a cron job and the doctors at each location would access patient & billing data from their respective servers. What I'd like is, that each of these servers all have synchronized info (especially the mySQL database's) - let's say on an hourly basis each of these servers synchronize data to a common remote server and the data is then brought down to each of the servers. I know an easier way would be to have the medical app running on a remote web server, but since this is medical that we're talking about and knowing how common it is in our area for the net to go gown, I wouldn't like a web based scenatio. Is such a setup possible? Would this be the right way to do things or is there a better way to this? Would really appreciate views and comments (or how to set this up) on this.

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• Why can't I boot from portable HD?

  - by user11239

  I've been trying to get Ubuntu 10.04-LTS 32-bit desktop installed onto a 250GB FreeAgent Go drive from Seagate. I've been able to install onto a USB flash drive and boot successfully from this. I have installed Ubuntu onto the jump drive using Universal USB Installer, and this was a total success in terms of getting Ubuntu to run off a flash drive. I was unable to accomplish this with the portable HDD. I then, following instructions, attempted to install the OS onto the HDD once booted up from the flash drive. After installing the OS on the HDD, the computer would simply not load the OS when the HDD medium was selected for booting from. However, as there is no System-> Preferences-> Removable Drives and Media I could not complete this step. Is this vital? How do I do this under Ubuntu 10.04? I have formmated the MBR on the HDD and repeated the above, still with no success. I have also browsed some forums that mention there may be something related to spin-up speeds, but nothing explained in detail the issue or how to solve it, and I'm not familiar enough with system booting to understand if this could be an issue. Basically, what I'm trying to do is get Ubuntu to boot off the HDD, I've attempted several things, and the result is, after selecting the HDD from BIOS, the OS never starts booting (after waiting upwards of ten minutes). I just have a white cursor blinking. I can always get it to boot from the jump drive. Related question

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• How to fix Black screen?

  - by stupidwhiteguy

  so I recently had my question deleted and merged into a standard how to for blank screens. I am relatively new to This type of computer work and i don't understand the steps nessary to diagnose my problem well enough to solve it so this help full how to has me feeling helpless I can use Ctrl + Alt +F1 and log in So how do I use sudo commands to fix the blank screen on my old dell? sudo lsoci -nn tells me my video card is a ATI rage 128 pro ultra tf /var/log/Xorg.0.log tells me Permission denied that is all i get Sudo apt-get install --reinstall unity tried thay also have also tried Apt-get update and upgrade Please dont close this question without providing an actual answer or if you think it is an exact duplicate provide a solution that worked for that question. I see a lot of these questions as closed and there is no real answer given I will try any solutions available and report results so that others can also solve problems not be overwhelmed by overly broad troubleshooting guides that do nothing to help solve specific issues The nomodeset change from quiet splash also yields no results on reboot I still get a blank screen this screen still has contorl alt f1 abilities but that is it contorl alt f8 causes blinking cursor and F7 gets a crazy flash with green and blue then blank screen Contorl alt f1 a log in prompt in text only when run in recovery mode with failsafe graphics its says the syestem is running in low graphics mode your screen graphics card and input device settings could not be detected correctly. You will need to configure these your self how do i do that? I got this /var/log/failsafeX-backup-120909200641.tar as the location of my log files but i have no idea how to axcess sounds work in blank screen also screen responds or flashes after log in is typed and password entered really any help is good I don't even know where to start I believe 12.04 is installed and functioning but i don't think I can see it at the end of the error log it says error setting mtrr (base= oxf0000000, size= 0x01000000, type=1) inappropriate ioctl for device(25) i have tried to provide as much info as I understand how to provide

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