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  • Solaris Tips : Assembler, Format, File Descriptors, Ciphers & Mount Points

    - by Giri Mandalika
    .roundedcorner { border:1px solid #a1a1a1; padding:10px 40px; border-radius:25px; } .boxshadow { padding:10px 40px; box-shadow: 10px 10px 5px #888888; } 1. Most Oracle software installers need assembler Assembler (as) is not installed by default on Solaris 11.      Find and install eg., # pkg search assembler INDEX ACTION VALUE PACKAGE pkg.fmri set solaris/developer/assembler pkg:/developer/[email protected] # pkg install pkg:/developer/assembler Assembler binary used to be under /usr/ccs/bin directory on Solaris 10 and prior versions.      There is no /usr/ccs/bin on Solaris 11. Contents were moved to /usr/bin 2. Non-interactive retrieval of the entire list of disks that format reports If the format utility cannot show the entire list of disks in a single screen on stdout, it shows some and prompts user to - hit space for more or s to select - to move to the next screen to show few more disks. Run the following command(s) to retrieve the entire list of disks in a single shot. format 3. Finding system wide file descriptors/handles in use Run the following kstat command as any user (privileged or non-privileged). kstat -n file_cache -s buf_inuse Going through /proc (process filesystem) is less efficient and may lead to inaccurate results due to the inclusion of duplicate file handles. 4. ssh connection to a Solaris 11 host fails with error Couldn't agree a client-to-server cipher (available: aes128-ctr,aes192-ctr,aes256-ctr,arcfour128,arcfour256,arcfour) Solution: add 3des-cbc to the list of accepted ciphers to sshd configuration file. Steps: Append the following line to /etc/ssh/sshd_config Ciphers aes128-ctr,aes192-ctr,aes256-ctr,arcfour128,arcfour256,\ arcfour,3des-cbc Restart ssh daemon svcadm -v restart ssh 5. UFS: Finding the last mount point for a device fsck utility reports the last mountpoint on which the filesystem was mounted (it won't show the mount options though). The filesystem should be unmounted when running fsck. eg., # fsck -n /dev/dsk/c0t5000CCA0162F7BC0d0s6 ** /dev/rdsk/c0t5000CCA0162F7BC0d0s6 (NO WRITE) ** Last Mounted on /export/oracle ** Phase 1 - Check Blocks and Sizes ... ...

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  • Ubuntu black screen and icons messed up 12.04

    - by user69869
    I had a successful install when i updated from 11.10 but when i actually went to start it it hanged and the purple screen for a few seconds then flickered my boot screen then showed the desktop i cant interact its black i can see the icons marked out but no images they are just gray wireless doesnt connect it seems that it messed up all the drivers. i tried to stat the old version i had its the same exept i can interact most window close buttons are missing and most of the time it doesnt know what screen im on. any ideas on what i can do? oh and recovery mode shows alot of errors and doesnt do much i ran it for the old version and it just goes through failing and gives an error beep. Thanks in advance any advice is appreciated (note windows still works fine on this system... unfortunately ;D )

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  • Embarcadero lance DBArtisan XE, un nouvel outil multiplateforme pour administrer des bases de donnée

    Embarcadero lance DBArtisan XE Un outil multiplateforme pour administrer des bases de données hétérogènes DBArtisan XE est un outil d'administration de bases de données hétérogènes, avec déploiement et mode de licence centralisés (et à la demande). Il est le dernièr produit en date de la famille d'outils DBArtisan édités par Embarcadero Technologies. Avec un support natif pour plusieurs plateformes de bases de données, DBArtisan XE permet par exemple aux administrateurs de bases de données de maximiser ? depuis une interface unique ? les performances, la disponibilité ou la sécurité de leurs bases quel que soit leur type. L'éditeur met en avant des "diagnostiques i...

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  • Friday Fun: Splash Back

    - by Asian Angel
    The best part of the week has finally arrived, so why not take a few minutes to have some quick fun? In this week’s game you get to play with alien goo as you work to clear the game board and reach as high a level as possible Latest Features How-To Geek ETC How to Upgrade Windows 7 Easily (And Understand Whether You Should) The How-To Geek Guide to Audio Editing: Basic Noise Removal Install a Wii Game Loader for Easy Backups and Fast Load Times The Best of CES (Consumer Electronics Show) in 2011 The Worst of CES (Consumer Electronics Show) in 2011 HTG Projects: How to Create Your Own Custom Papercraft Toy Calvin and Hobbes Mix It Up in this Fight Club Parody [Video] Choose from 124 Awesome HTML5 Games to Play at Mozilla Labs Game On Gallery Google Translate for Android Updates to Include Conversation Mode and More Move Your Photoshop Scratch Disk for Improved Performance Winter Storm Clouds on the Horizon Wallpaper Existential Angry Birds [Video]

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  • Ubuntu won't boot, only displays GRUB terminal

    - by Badea Sorin
    I have a problem with my Ubuntu 11.04. I've installed Ubuntu 11.04 from Windows, it worked fine for days, but today it won't boot. When I start the machine, GRUB loads. There is the Windows 7 loader, I select Ubuntu from there and after that, I should see the Ubuntu GRUB menu, where I'd select the mode to boot Ubuntu. However, I can't see that anymore. I directly get to a GRUB terminal. Can anyone help me with this? How would I recover my data or reset the boot loader?

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  • Test iPhone app on iPad mini?

    - by Devfly
    I have developed an iPhone app, right now I only need a device for testing. I have 300$, and two choices - second hand iPhone 4, or brand new iPad mini. The better choice obviously is the iPad, but is it sufficient for testing iPhone apps on? On the iPad, iPhone apps can run just fine in 2X mode, but are there any differences between the app performance on iPhone and iPad (except the chipset). Should I test my app on actual iPhone, or the iPad will suffice? My app is RSS reader, not some game, so I think everything will be fine with testing on iPad mini. If I buy the iPad I will find some friends iPhone 4/3gs running iOS 5.1 (because my app's deployment target is 5.1, and the iPad comes with 6.0), but of course I can't extensively test on this iPhone. Thank you!

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  • IIS7 Serving .mp4s, not playable on iOS devices.

    - by Danomite
    I've added the proper MIME type to the server, made sure it applies to not only the specific site but even the all of server's sites. The file is accessible and playable in my browser (Chrome) but when trying to pull it up on an iPhone , the debug mode warns me that the "movie could not be played" but on iPad it's "byte_range_error_message" I'm really at a loss here of why iOS devices won't load the video up. I know it's not the video files themselves because I had used the same file on a different server (on a shared hosting package). Any help is appreciated! -Dan

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  • What Problems Are Better Solved By SOAP Over REST?

    In the battle for web service supremacy SOAP and REST have been battling for years. In my personal opinion this debate should have never existed. Yes, both forms can be used to create an interactive web service, but each form of a service was developed independent of each other to solve two different yet similar problems. Based my research and experience I would have to say that REST should be the preferred web service methodology and SOAP should only be used in specific situations. Note, I did not say that I was against SOAP, and in fact I actually like to use SOAP when it is needed. Criteria for using SOAP: Does the service need a guaranteed level of reliability and security? Did the provider and consumer of the service agreed on a standardized data exchange format? Does the service need data context and state management? If you answer yes to any of these questions, then you may want to consider SOAP as the format for the web service. Another way to look at the relationship between REST and SOAP is to look at the medical field.  For most things a general doctor or you family health care provider can acceptably treat most conditions from the case of a common cold to a broken bone. A general doctor more aligns with REST in my opinion because for most service requirements REST fulfills a projects needs, but what happens if you need more of an advanced examination, you would go to a specialist. A specialist would already have experience dealing with specific issues that you are experiencing giving them specific context to how best treat you going forward. SOAP acts more like a specialist doctor giving that they understand the context of an issue and can treat it based on the state of other patients they have already treated. An example of where I would use SOAP over REST in real life would be a single sign-on application. I n these cases I need to check validate a username and password for authentication and authorization of a web page request. This service would need to maintain state while it authenticated a user and while it validated access to a web page on a subsequent request. This service must process every request for access and not allow caching to ensure that every request is processed and the appropriate users are allowed to view selected web pages. References: Rozlog, M. (2010). REST and SOAP: When Should I Use Each (or Both)? Retrieved 11 20, 2011, from Infoq.com: http://www.infoq.com/articles/rest-soap-when-to-use-each

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  • JavaOne Rock Star – Adam Bien

    - by Janice J. Heiss
    Among the most celebrated developers in recent years, especially in the domain of Java EE and JavaFX, is consultant Adam Bien, who, in addition to being a JavaOne Rock Star for Java EE sessions given in 2009 and 2011, is a Java Champion, the winner of Oracle Magazine’s 2011 Top Java Developer of the Year Award, and recently won a 2012 JAX Innovation Award as a top Java Ambassador. Bien will be presenting the following sessions: TUT3907 - Java EE 6/7: The Lean Parts CON3906 - Stress-Testing Java EE 6 Applications Without Stress CON3908 - Building Serious JavaFX 2 Applications CON3896 - Interactive Onstage Java EE Overengineering I spoke with Bien to get his take on Java today. He expressed excitement that the smallest companies and startups are showing increasing interest in Java EE. “This is a very good sign,” said Bien. “Only a few years ago J2EE was mostly used by larger companies -- now it becomes interesting even for one-person shows. Enterprise Java events are also extremely popular. On the Java SE side, I'm really excited about Project Nashorn.” Nashorn is an upcoming JavaScript engine, developed fully in Java by Oracle, and based on the Da Vinci Machine (JSR 292) which is expected to be available for Java 8.    Bien expressed concern about a common misconception regarding Java's mediocre productivity. “The problem is not Java,” explained Bien, “but rather systems built with ancient patterns and approaches. Sometimes it really is ‘Cargo Cult Programming.’ Java SE/EE can be incredibly productive and lean without the unnecessary and hard-to-maintain bloat. The real problems are ‘Ivory Towers’ and not Java’s lack of productivity.” Bien remarked that if there is one thing he wanted Java developers to understand it is that, "Premature optimization is the root of all evil. Or at least of some evil. Modern JVMs and application servers are hard to optimize upfront. It is far easier to write simple code and measure the results continuously. Identify the hotspots first, then optimize.”   He advised Java EE developers to, “Rethink everything you know about Enterprise Java. Before you implement anything, ask the question: ‘Why?’ If there is no clear answer -- just don't do it. Most well known best practices are outdated. Focus your efforts on the domain problem and not the technology.” Looking ahead, Bien remarked, “I would like to see open source application servers running directly on a hypervisor. Packaging the whole runtime in a single file would significantly simplify the deployment and operations.” Check out a recent Java Magazine interview with Bien about his Java EE 6 stress monitoring tool here.

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  • Space partitioning when everything is moving

    - by Roy T.
    Background Together with a friend I'm working on a 2D game that is set in space. To make it as immersive and interactive as possible we want there to be thousands of objects freely floating around, some clustered together, others adrift in empty space. Challenge To unburden the rendering and physics engine we need to implement some sort of spatial partitioning. There are two challenges we have to overcome. The first challenge is that everything is moving so reconstructing/updating the data structure has to be extremely cheap since it will have to be done every frame. The second challenge is the distribution of objects, as said before there might be clusters of objects together and vast bits of empty space and to make it even worse there is no boundary to space. Existing technologies I've looked at existing techniques like BSP-Trees, QuadTrees, kd-Trees and even R-Trees but as far as I can tell these data structures aren't a perfect fit since updating a lot of objects that have moved to other cells is relatively expensive. What I've tried I made the decision that I need a data structure that is more geared toward rapid insertion/update than on giving back the least amount of possible hits given a query. For that purpose I made the cells implicit so each object, given it's position, can calculate in which cell(s) it should be. Then I use a HashMap that maps cell-coordinates to an ArrayList (the contents of the cell). This works fairly well since there is no memory lost on 'empty' cells and its easy to calculate which cells to inspect. However creating all those ArrayLists (worst case N) is expensive and so is growing the HashMap a lot of times (although that is slightly mitigated by giving it a large initial capacity). Problem OK so this works but still isn't very fast. Now I can try to micro-optimize the JAVA code. However I'm not expecting too much of that since the profiler tells me that most time is spent in creating all those objects that I use to store the cells. I'm hoping that there are some other tricks/algorithms out there that make this a lot faster so here is what my ideal data structure looks like: The number one priority is fast updating/reconstructing of the entire data structure Its less important to finely divide the objects into equally sized bins, we can draw a few extra objects and do a few extra collision checks if that means that updating is a little bit faster Memory is not really important (PC game)

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  • java+netbeans+mysql+ubuntu 64 bits LTS VS C#+MS SQL for fast develop trading system

    - by crunchor
    I am going to build a trading system and use with the broker "Interactive Broker" API. The API supports C++ Socket, Java Socket, DDE, Active X APIs in Windows. The API supports Java Socket API, Posix C++ Socket API in Unix kind like Ubuntu. My trading system has some real time long calculations to do and a lot of maths for backtest. I am using a retail trading program Amibroker which is written in C++ and I run it in windows xp 32 bits, it will take me days to do one serious backtest with my G620 Sandy Bridge CPU and 3GB of ram. So for my trading system, I need to have 1. speed, 2. stability, 3. fast development I have done some research, C++ is fastest but I am not good at it and it takes much longer time to develop. Other than C++, Java in linux has the best speed. I also did some research for database and look like mysql has the best speed. Mysql and PostgreSQL both are very popular open source sql db, which one should I choose? I see MySQL has Workbench now which looks like similar to MS SQL management studio so look like a good start. Netbeans should be the most popular Java IDE now and seem like its GUI design can be as easy as Virtual Studio now. I am not sure if made by Netbeans would affect the speed and if its GUI design is really that good and easy to use. Ubuntu 64 bits LTS has good long term support, good community support, and stable. I will buy a new computer if I can create a good trading system for live trading and backtest. Very likely I will buy a I7 or I5 depends on if I7 can really have better speed for my case. Actually I mainly deal with C# in my jobs and I just knew java but not good at java. What would you guys recommend? Any better solution? This will be a big project and very likely life long project for me so I seriously do research including asking you guys before I start and focus on what I should, thanks!

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  • Turbo C++ to Visual Studio 2010 migration [closed]

    - by BigGenius
    OK, based on my previous questions and your help., I have gone to install Visual Studio Express. But now problem is, the programs which I successfully code at home on Visual Studio don't run on Turbo C++ compiler at school (assuming I type the program instead of exporting code). Is there anything I can do? Also I am just learning basic syntax and data handling, loops, structures, arrays and all. But Visual Studio has auto completion and pretty typing (which may be advantageous) but crap for a beginner getting hold on to language. Sorry, if I have been unclear. But what should I do? This will make me lazy programmer and will reflect in my grades. Is there any other IDE, which I can use, very similar to Turbo C++ and able to run in Windows 7 in fullsreen mode.

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  • Black screen after installing ubuntu 12.04

    - by neodyme
    :) After installing Ubuntu 12.04 from a CD, everything goes perfectly until I restart the computer (after the installation process) im not able to see the login screen, I just get a black screen! so I press randomly keys and sometimes im able to see the background wallpaper but almost instantly the black screen appears. I think that I have to update the nVidia drivers or something like this I tried to start from the recovery mode, update my package, but still the same problem I can't start with the graphical interface as well, i get an error message 'no screen' !! I dont understand why I have this problem because before the installation im able to try ubuntu (from the cd) and works perfect. Thanks !!

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  • Surface and the Uphill Battle to Win Over iPad Users (Namely: Me)

    - by D'Arcy Lussier
    I went away this past weekend and decided to bring along the Windows 8 tablet from the Build conference last year – y’know, to give Windows 8 a try in a typical scenario. I also brought our iPad 2 along since I figured my wife would want to use that. I’d love to tell you how I found using my Windows 8 tablet but I can’t – I used the iPad exclusively the entire weekend. It was during this that I realized what Microsoft needs to do to win me over as an iPad user. As you’ll see, I’m left wondering what it is that Surface is meant to compete with: iPad and other tablets, or thin laptops like the MacBook Air or Ultrabooks. Device Size I really like the size of the iPad compared with the Build tablet. It’s not as long and the thinness/weight of the device makes it feel more like you’re holding a magazine than a computer. I’m pleased that Microsoft will be matching the thinness of the iPad with Surface, but I’m suspect as to what that actually means. The iPad’s edges slant inwards where the Surface has a thicker boxish look (similar to the iPhone 4S). So while they may have the same depth at the deepest part of both devices, I bet the iPad will come off feeling thinner. However, its not lost on me the number of external port options the Surface’s design provides over the iPad (Usb, etc.). With that said, I haven’t missed having a USB slot on my iPad. I’m not a fan of lengthening the Surface screen size to almost a full inch over the iPad, mainly because… Vertical Orientation Experience Did you notice at the announce event, in the images of the devices that have been released, and in any marketing for it, that the surface is always displayed in horizontal orientation. This is a huge beef I have with my Build tablet and why I prefer the iPad. Yes the iPad can do the wide-screenish mode, but the iPad is oriented to be vertical by nature. Don’t agree? Look at the button and camera placement – both on the shorter sides of the device. Compare that with the Surface, where the orientation for the button and camera is on the longer sides. To be fair, Blackberry and the horde of Android tablets out there haven’t gotten this either – since most monitors are widescreen nowadays tablets should be too right? Wrong. Widescreen is great for certain things, but tasks such as reading is not one of them – hence why monitor companies like Dell provide stands that allow you to flip your widescreen monitor to a vertical orientation. That Microsoft has chosen a horizontal orientation by default for Windows 8 is disappointing – hopefully hardware manufacturers will be given the option of a default vertical orientation. Fast Startup Time I like that I can turn off/turn on the iPad very quickly. Even from a true “off” mode and not just sleeping, the iPad boots up very quickly. Windows RT needs to have that same quick response. If I start finding that I’m waiting for the device to boot up for more than 30 seconds that could be a show stopper. No Heat I really hate that the Build tablet has fans that kick in to cool the procs, but its basically a slate computer and I get its part of that prototype build. For Surface, it needs to be the same type of experience as the iPad – no heat! I know Surface doesn’t have fans and uses some cool new vent system or something like that, but even then – I want to sit and read a book on my Surface without having to feel any heat coming from the device, which is the experience I have with the iPad now. What About Apps?! I am definitely not the target client when it comes to app stores. On my iPad I use: Safari Kindle Reader Twitter App Settlers of Catan TSN’s App And that’s it. So really, while its nice that some version of Office might be available, I’m not planning on utilizing a Surface for creating a PowerPoint or working on a Word document – that’s what my laptop is for. I want my tablet to be for information snacking or as an e-reader and occasionally an entertainment device. Surface vs iPad or Surface vs Air? The more that I read up on Surface, the more I wonder if it won’t be a touch-enabled MacBook Air competitor more than an iPad one. Also, I really question if Microsoft gets tablets – when one of your main selling features is a built-in physical keyboard it speaks more to a traditional laptop experience than a tablet one that’s entirely reliant on touch. Still, I really love the Windows Phone interface – way more than iOS – so I’m still very optimistic that the Metro experience on the tablet will be fantastic. I just worry that Microsoft has interpreted a tablet as a computer with a removable keyboard and a touch screen, and that’s not what tablet computing is about at all.

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  • Bridging: Loosing WLAN network connection with 4addr on option - Why?

    - by WitchCraft
    Question: For use with my Xen VM, I need to create a virtual network interface (vif) that is bridged to wlan0. If in /etc/network/interfaces I add auto xenbr0 iface xenbr0 inet dhcp And then later do brctl addif xenbr0 wlan0 I get this error message. can't add wlan0 to bridge xenbr0: Operation not supported I found out that Linux won't let you bridge a wireless interface in managed mode at all unless you enable the 4addr option (needed to recompile iw): iw dev wlan0 set 4addr on Afterwards brctl addif xenbr0 wlan0 works, and brctl show shows xenbr0 as bridged to wlan0. Unfortunately, as soon as I execute iw dev wlan0 set 4addr on my entire network connection is gone (no connection). As soon as then I execute iw dev wlan0 set 4addr off I reconnect and it works again. If I re-execute 4addr on, it breaks again, if I execute 4addr off, it works again. Unfortunately, I can't just turn 4addr on, activate the bridge and then turn it back off (error: device not ready). Does anybody know why I loose my connection ?

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  • Using SQL Source Control with Fortress or Vault &ndash; Part 1

    - by AjarnMark
    I am fanatical when it comes to managing the source code for my company.  Everything that we build (in source form) gets put into our source control management system.  And I’m not just talking about the UI and middle-tier code written in C# and ASP.NET, but also the back-end database stuff, which at times has been a pain.  We even script out our Scheduled Jobs and keep a copy of those under source control. The UI and middle-tier stuff has long been easy to manage as we mostly use Visual Studio which has integration with source control systems built in.  But the SQL code has been a little harder to deal with.  I have been doing this for many years, well before Microsoft came up with Data Dude, so I had already established a methodology that, while not as smooth as VS, nonetheless let me keep things well controlled, and allowed doing my database development in my tool of choice, Query Analyzer in days gone by, and now SQL Server Management Studio.  It just makes sense to me that if I’m going to do database development, let’s use the database tool set.  (Although, I have to admit I was pretty impressed with the demo of Juneau that Don Box did at the PASS Summit this year.)  So as I was saying, I had developed a methodology that worked well for us (and I’ll probably outline in a future post) but it could use some improvement. When Solutions and Projects were first introduced in SQL Management Studio, I thought we were finally going to get our same experience that we have in Visual Studio.  Well, let’s say I was underwhelmed by Version 1 in SQL 2005, and apparently so were enough other people that by the time SQL 2008 came out, Microsoft decided that Solutions and Projects would be deprecated and completely removed from a future version.  So much for that idea. Then I came across SQL Source Control from Red-Gate.  I have used several tools from Red-Gate in the past, including my favorites SQL Compare, SQL Prompt, and SQL Refactor.  SQL Prompt is worth its weight in gold, and the others are great, too.  Earlier this year, we upgraded from our earlier product bundles to the new Developer Bundle, and in the process added SQL Source Control to our collection.  I thought this might really be the golden ticket I was looking for.  But my hopes were quickly dashed when I discovered that it only integrated with Microsoft Team Foundation Server and Subversion as the source code repositories.  We have been using SourceGear’s Vault and Fortress products for years, and I wholeheartedly endorse them.  So I was out of luck for the time being, although there were a number of people voting for Vault/Fortress support on their feedback forum (as did I) so I had hope that maybe next year I could look at it again. But just a couple of weeks ago, I was pleasantly surprised to receive notice in my email that Red-Gate had an Early Access version of SQL Source Control that worked with Vault and Fortress, so I quickly downloaded it and have been putting it through its paces.  So far, I really like what I see, and I have been quite impressed with Red-Gate’s responsiveness when I have contacted them with any issues or concerns that I have had.  I have had several communications with Gyorgy Pocsi at Red-Gate and he has been immensely helpful and responsive. I must say that development with SQL Source Control is very different from what I have been used to.  This post is getting long enough, so I’ll save some of the details for a separate write-up, but the short story is that in my regular mode, it’s all about the script files.  Script files are King and you dare not make a change to the database other than by way of a script file, or you are in deep trouble.  With SQL Source Control, you make your changes to your development database however you like.  I still prefer writing most of my changes in T-SQL, but you can also use any of the GUI functionality of SSMS to make your changes, and SQL Source Control “manages” the script for you.  Basically, when you first link your database to source control, the tool generates scripts for every primary object (tables and their indexes are together in one script, not broken out into separate scripts like DB Projects do) and those scripts are checked into your source control.  So, if you needed to, you could still do a GET from your source control repository and build the database from scratch.  But for the day-to-day work, SQL Source Control uses the same technique as SQL Compare to determine what changes have been made to your development database and how to represent those in your repository scripts.  I think that once I retrain myself to just work in the database and quit worrying about having to find and open the right script file, that this will actually make us more efficient. And for deployment purposes, SQL Source Control integrates with the full SQL Compare utility to produce a synchronization script (or do a live sync).  This is similar in concept to Microsoft’s DACPAC, if you’re familiar with that. If you are not currently keeping your database development efforts under source control, definitely examine this tool.  If you already have a methodology that is working for you, then I still think this is worth a review and comparison to your current approach.  You may find it more efficient.  But remember that the version which integrates with Vault/Fortress is still in pre-release mode, so treat it with a little caution.  I have found it to be fairly stable, but there was one bug that I found which had inconvenient side-effects and could have really been frustrating if I had been running this on my normal active development machine.  However, I can verify that that bug has been fixed in a more recent build version (did I mention Red-Gate’s responsiveness?).

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  • Why won't cron run my sh script?

    - by Dmitry Narkevich
    Used gnome-schedule to create a script to set my headset as the fallback audio device because it keeps unsetting it when the headset gets disconnected or pc goes into sleep mode. Anyway, crontab is this: SHELL=/bin/sh PATH=/bin:/sbin:/usr/bin:/usr/sbin:/home/dmitry/bin * * * * * headsetfix /home/dmitry/bin/headsetfix is #!/bin/sh pacmd set-default-sink alsa_output.usb-Logitech_Inc_Logitech_USB_Headset_H540_00000000-00-H540.analog-stereo pacmd set-default-source alsa_input.usb-Logitech_Inc_Logitech_USB_Headset_H540_00000000-00-H540.analog-stereo It runs fine from the terminal. I've made sure it's chmodded to be executable, and "which headsetfix", run from cron, outputs "/home/dmitry/bin/headsetfix" so not sure what the problem is.

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  • Architecture of interaction modes ("paint tools") for a 3D paint program

    - by Bernhard Kausler
    We are developing a Qt-based application to navigate through and paint on a volume treated as a 3D pixel graphic. The layout of the app consists of three orthogonal slice views on which the user may paint stuff like dots, circles etc. and also erase already painted pixels. Think of a 3D Gimp or MS Paint. How would you design the the architecture for the different interaction modes (i.e. paint tools)? My idea is: use the MVC pattern have a separate controler for every interaction mode install an event filter on all three slice views to collect all incoming user interaction events (mouse, keyboard) redirect the events to the currently active interaction controler I would appreciate critical comments on that idea.

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  • How to enable 3D acceleration under VMware workstation 8?

    - by Yan Zhou
    I saw there are similar questions, but I don't think they answer exactly my questions. Did anyone managed to get 3D acceleration work under VMWare workstation 8? I have VMware 8.01 installed on Ubuntu 11.10. The guest I am trying is also Ubuntu 11.10. I manually installed vmware-tools and it went well, except the X-config part was skipped as it said the distribution driver is used. The guest runs well but it seems fall back to 2D mode. Does any one has any idea how to enable 3D acceleration under VMWare workstaion with Linux guest?

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  • Run command in command prompt from Ruby application

    - by Julian
    I have a command-line Ruby application that uses Curses to create a GUI. This GUI is absolutely mangled by Windows' command prompt if the command prompt window is too small. The command prompt window can be resized in properties. However, I want to resize it programatically. Running this command in the command prompt (nothing to do with Ruby) will resize the command prompt window to desired variables. mode con:cols=120 lines=40 Can I do this purely in Ruby? Or, failing that (I suspect doing it purely in Ruby may be impossible) can my ruby application actually run that command and 'hit enter', and resize window it's running in?

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  • Xubuntu dual monitor broke display

    - by Arman yaraee
    After I used Settings Display to enable my second monitor, my first display is not working anymore either. So I enabled both, then clicked save configuration since it was working and boom it crashed. Now when I start up, I can see the screen which I type my password but it goes black after that! When I boot into recovery mode it works fine but in Settings Display I don't see HDMI at all to disable it. Is there anyway to restore all display setting to default? (I can Ctrl+ALT+F1 and type commands but xrandr returns no results over there) EDIT I should clarify that system bios is set to laptop display

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  • Can't specify window's class in CCSM's Place Windows

    - by Anto
    Following this method, I wanted to "place" some of my windows on specific viewports. For instance, I want Xchat to always start on my top right viewport (x=2, y=1). But after I have set everything up and clicked the "Close" button to validate it (I don't have any other action button, like "OK" or "Apply"), the only thing that get saved up are the viewport X and Y coordinates. The window class (in my case class=Xchat) remains empty. This bug only occurs in the "Windows with fixed viewport" section; it works well in the "Windows with fixed placement mode", for instance. How can I solve or circumvent this issue ?

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  • Installation of Ubuntu 12.04 LTS is Crashing from Live CD

    - by Daniel Evans
    Hardware: Dell Inspiron 1545 Steps are as follows: Insert Ubuntu 12.04 disc Boot computer Output is as follows error: unexpectedly disconnected from boot status daemon Generating locales... en_US.UTF-8... done Generation complete. ***MEMORY-ERROR***: glib-compile-schemas[569]: GSlice: assertion failed: aligned_memory == (gpointer) addr Aborted pwconv: failed to change the mode of /etc/passwd- to 0600 ***MEMORY-ERROR***: [996]: GSlice: assertion failed: aligned_memory == (gpointer) addr ***MEMORY-ERROR***: glib-compile-scehmas[1034]: GSlice: assertion failed: aligned_memory == gpointer) addr Aborted /usr/lib/python2.7/dist-packages/LanguageSelector/LocaleInfo.py:256: UserWarning: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory warnings.warn(msg.args[0].encode('UTF-8')) Using CD-ROM mount point /cdrom ... etc etc... End up at a prompt line ubuntu@ubuntu:~$ The computer's self tests have given the following three errors (so far): Error Code OFOO:O65D Msg DISK-DST Self-test read error SATA Disk S/N=.... Confidence Test Fail Error Code 0F00:1332 Msg: DISK- Block 418047942: Interrupt Request (IRQ) Error Code: 0142 HD0 self test unsuccessful Status 79

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  • Wifi hotspot to connect to Android using non-AP supported cards

    - by 3l4ng
    I'm running Ubuntu 13.10 64b on a Dell Inspiron N5010. My wireless device (found using lspci) is Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01). I bought a new android phone and want to connect to Internet by using the laptop as a Wireless Access Point (ad-hoc doesn't work with Android). I tried following tutorials like the one at How to setup a wi-fi hotspot (access point mode)?. The relevant output from iw list was Supported interface modes: * IBSS * managed Running sudo hostapd /path/to/conf/file gave me (eth1 is the wireless, verified by iwconfig) Failed to create interface mon.eth1: -95 (Operation not supported) Could not set channel for kernel driver eth1: Unable to setup interface. Could not connect to kernel driver. I am able to use Connectify and Virtualrouter on Windows, and the phone works great. How do I get an access point running on Ubuntu? I'm open to other alternatives as well.

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  • Black screen in installation when Nvidia graphic card plugged

    - by jopasso1
    When I try to install any recent version of Ubuntu, the screen shows some green and purple mess (like analog TVs when thers no signal). Then, a black screen. I guess it keeps booting in live/install mode. But I can't see it. I tried installing from CD and USB, I tryed changing some BIOS settings... I installed older versions, like 8.04, and it worked, but after updating the system, it crashes again. That's why I discovered that upgrading Nvidia drivers, made system show a black screen again. After that, I unplugged the Nvidia card and installed 12.04 with onboard card. It worked perfectly. Then, I plugged Nvidia again and system booted, but only showing that black screen again. I keep working with onboard card, so far... The nVidia is a GeForce 8500GT.

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