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• How can I get nvidia-settings to work?

  - by Palace Chan

  I have an ASUS N56VM-TB71 with a GeForce 630M graphics card. I have ubuntu 12.04 and when I vga plugged in a dell monitor, i am able to use it. When I then use my laptops hdmi port to plug in my second monitor, nothing happens, so I went to nvidia-settings and I got the error: You do not appear to be using the NVIDIA X Driver, please run nvidia-xconfig as root and restart the X server. I ran this command and rebooted but I still cannot access nvidia-settings and I keep getting that error even though my /etc/X11/xconf.org is the one that got generated by running that command! What can I do to get around that and use my second monitor as well?

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• How to perform a detailed and quick 3D performance test

  - by gsedej

  I am wondering how to quickly test performance of my 3D graphics. Since glxgears is not benchmark what should I use. Also glxgears sometimes stuck at 60FPS, you cannot even compare before/after driver update (e.g. adding xorg-edgers PPA). Even glxgears doesn't really work out of box. One possibility is screensavers, but you can't see FPS. I am also not willing to install 600MB nexuiz, specially if I am running on Live-CD. Other 3D games are also very big... Unigine tests are too demanding for opensource drivers (problems with too low OpenGL and probably texture compression (S3TC...)). I would also like to test OpenGL 2.x extentions. How to quickly test your 3D performance?

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• Virtualbox will run from 32bit installation CD but not 64bit.

  - by MetaDark

  I am trying to set up Windows in Virtual Box, so I don't need to reboot in the rare occasion that I actually need it. The problem is, Virtual Box doesn't preform any errors when I insert the 32bit installation CD but when I try to use the 64bit installation; What!? I am already using the installation disc! I've checked my BIOS to see if I have SVM (AMD's version of VT) disabled and all I see is "Enabled" I have a K9N6PGM2-V2 motherboard A Triple Core AMD Athlon II A Nvdia NForce 430 integrated graphics card 4GB of RAM An 80GB IDE And a 1TB SATA I don't think the last three specifications matter but just in case XP I am pretty sure the CD isn't broken ( I am going to make sure in just a moment ), what could be the cause to this problem? Edit: The 64bit installation CD is not broken, but I found out when trying to install from the 32bit version that it's trying to upgrade, not preform a fresh install - Odd.

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• A good way to build a game loop in OpenGL

  - by Jeff

  I'm currently beginning to learn OpenGL at school, and I've started making a simple game the other day (on my own, not for school). I'm using freeglut, and am building it in C, so for my game loop I had really just been using a function I made passed to glutIdleFunc to update all the drawing and physics in one pass. This was fine for simple animations that I didn't care too much about the frame rate, but since the game is mostly physics based, I really want to (need to) tie down how fast it's updating. So my first attempt was to have my function I pass to glutIdleFunc (myIdle()) to keep track of how much time has passed since the previous call to it, and update the physics (and currently graphics) every so many milliseconds. I used timeGetTime() to do this (by using <windows.h>). And this got me to thinking, is using the idle function really a good way of going about the game loop? My question is, what is a better way to implement the game loop in OpenGL? Should I avoid using the idle function?

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• window decoration command change

  - by Pedro

  I'm quite new to Ubuntu, and I don't know how to fix this: I have been experiencing the problem with window decorations that go away. I have been told that I could correct that with compiz fusion icon, just restarting the graphics whenever it happened. This solution only fixed the problem for like 30 seconds. Then I found out that the command inside the window decorator had changed, so I only had to reset it to default (/usr/bin/compiz-decorator). The only problem is that it keeps changing the command by itself once or twice a day. I can live with that, but I would like to find a more permanent solution, if there is one. I am running Ubuntu 11.10

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• Frequent GUI pauses in Ubuntu 13.04 / Unity / Intel HD4000

  - by Simon

  I'm experiencing very frequent (and regular) GUI pauses on my system. Every 30 seconds (pretty much exactly) the GUI will freeze for maybe .25 to .5 seconds. The mouse stops moving, keys stop echoing and a stopwatch timer briefly pauses. I'm using the Intel Graphics driver available from: https://download.01.org/gfx/ubuntu/13.04/main I've looked in a few places and tried a few things for a solution: I've checked cron and anacron for scheduled processes. I've disabled background processes (eg mysql, postgres, apache) not that these were doing anything anyway I've checked the following posts and tried the suggestions there: Unity GUI pauses/freezes for less than a few seconds How to go about troubleshooting frequent system pauses I've watched the system using top and System Monitor and there are no spikes (or even blips) of cpu usage when the pauses occur. There are no obvious error messages in dmesg or syslog There is loads of free RAM (8GB+) and no swap usage If it helps it's a ZooStorm i5 laptop with a HD4000 GPU, 16GB Ram and an SSD. Any help / suggestions would be very gratefully received.

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• Can I hook my xbox up to my Ubuntu PC

  - by Anonymous John

  My old xbox 360 won't eject disks, it makes a sound,but won't open. I want to play games, so I think I could hook it up to my PC running Ubuntu 13.10 64-bit and maybe I could use my PC's DVD drive. Can this work at all, or am I just crazy? There is an HDMI port on the back of my graphics card. If I can't do that, is there any software for Ubuntu that can rip the game off of a CD and put it on a flash drive? I have heard xbmcbuntu works great for gaming, but it doesn't work with my PC.

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• Horible lag on Xubuntu media center setup

  - by William

  I am setting up a media center running Xubuntu 11.10 as a media center. It is using the XFCE desktop enviroment. I have the NVIDIA drivers installed from the Additional Drivers program, and uninstalled all but the esennitial software. The computer is a Dell Dimension 3000. You can view detailed technical specifications here. The graphics card installed is a Geforce 8400 GS. I have installed all updates through Update Manager. What can I do to fix the horrible lag? It makes watching TV impossible.I have uploaded two videos of the lag, here and here. The second one does not have sound because the sound stops playing on some channels that lag a lot. The TV card is a Hauppage 950q USB, and the TV recording program is Kaffiene. Please help me with this, I am trying to do this to show how great Ubuntu is to the rest of the family.

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• Flash player (in Firefox) is unstable in 14.04

  - by henry

  For 13.10, I used this guide to get Intel iGPU-supported playback of flash videos in Firefox: http://www.webupd8.org/2013/09/adobe-flash-player-hardware.html All in all, Intel graphics acceleration for flash content was working just fine in 13.10, at least on my machine (with Xubuntu). I basically followed the guide to do the same for 14.04, but about 2-3 weeks ago flash videos started acting up. Whenever I have one instance of flash paused or stopped in one tab and go to the next tab to continue some song on Soundcloud or something, it's game over. I'm clueless as to what I can do here. Did anything change in the meantime?

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• Need new developers-laptop, with ubuntu. Multiple ext displays, ssd, dock, NO DVD [closed]

  - by Ole Morten Amundsen

  I'm having a really hard time finding a great alternative for Macbook Pro (I have a MB pro '08). I'd like to return to ubuntu and need a kick-ass laptop. If you help, you've lead me back to linux :) Req: ubuntu friendly lots of memory 8G+ ssd 160GB+ great processor (intel sandy?) connect up to three external displays. this triple display looks cool No optical drive, NO DVD 13-17" dock. In place of the ridiculous optical drive (It's like having a floppy drive IMO): extra battery? 2nd ssd? extra graphics card? your suggestion The laptop should be designed for not having dvd. I can't find many, unless they are tiny 11"... I'm exited to know your answers!

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• Not able to suspend or hibernate

  - by Tim

  My Ubuntu 10.10 on my laptop Lenovo T400 is not able to suspend or hibernate. Whenever I click Suspend or Hibernate, the moon LED on the bottom of the lid flashes a few seconds, the screen quickly shows something like "some devices fail to suspend, error 5", and then the moon LED goes off and the display still has ambient light illumination. I suppose in suspend or hibernation state, the display should have no illumination, just like when the laptop is turned off, right? If I press any key, the unlock screen dialogue will pop out. I searched a little on the internet, and installed 'acpi-support' according to some advice but it does not help. Any suggestions to solve this problem? Thanks and regards! ADDED: Laptop specifications: CPU Intel Mobile Core 2 Duo P8800 @ 2.66GHz Penryn 45nm Technology RAM 1.9GB Single-Channel DDR3 @ 532MHz (7-7-7-20) Motherboard LENOVO 2764CTO (None) Graphics ThinkPad Display 1440x900 @ 1440x900 ATI Mobility Radeon HD 3400 Series (Lenovo) Hard Drives 244GB Western Digital WDC WD2500BEVS-08VAT2 (SATA) Optical Drives HL-DT-ST DVDRAM GSA-U20N AZCDW EFCPUZ452 SCSI CdRom Device AZCDW EFCPUZ452 SCSI CdRom Device Audio Conexant 20561 SmartAudio HD

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• Unity poor performance after upgrading to 13.10

  - by Juzer Ali

  I upgraded recently from 13.04 to 13.10. I have Dell Inspiron 4GB RAM, Intel Core i3. Login takes a lot of time and all the graphics are very slow. Alt + Tab takes a lot of time (seconds). After reading some threads, I also removed Cinnamon desktop, but it didn't change anything. I had to ultimately fall back to Gnome Flashback (no effects). Gnome flashback works fine without any issues. Can anyone please help me get back to Unity, else I will have a very hard time running using Gnome.

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• Switching between levels, re-initialize existing structure or create new one?

  - by Martino Wullems

  This is something I've been wondering for quite a while. When building games that exist out of multiple levels (platformers, shmups etc) what is the prefered method to switch between the levels? Let's say we have a level class that does the following: Load data for the level design (tiles), enemies, graphics etc. Setup all these elements in their appriopate locations and display them Start physics and game logic I'm stuck between the following 2 methods: 1: Throw away everything in the level class and make a new one, we have to load an entirely new level anyway! 2: pause the game logic and physics, unload all currents assets, then re-initialize those components with the level data for the new level. They both have their pros and cons. Method 1 is alot easier and seems to make sense since we have to redo everything anyway. But method 2 allows you to re-use exisiting elements which might save resources and allows for a smoother transfer to the new level.

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• Drawing different per-pixel data on the screen

  - by Amir Eldor

  I want to draw different per-pixel data on the screen, where each pixel has a specific value according to my needs. An example may be a random noise pattern where each pixel is randomly generated. I'm not sure what is the correct and fastest way to do this. Locking a texture/surface and manipulating the raw pixel data? How is this done in modern graphics programming? I'm currently trying to do this in Pygame but realized I will face the same problem if I go for C/SDL or OpenGL/DirectX.

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• Can't activate "mirror display"

  - by Nemo Peeters

  I have Ubuntu 12.04 on a Dell latitude E6410, I have a problem when using the VGA output I always have dual monitor and can't switch on the "mirror display" toggle under systems setting/displays. It's rather annoying when having to do presentation with a video projector. the option "mirror display" is in light grey and I can"t tick the box. Thanks for those who might have an idea how to resolve this? update: driver is: Intel® Ironlake Mobile x86/MMX/SSE2 card something like this ? description: VGA compatible controller product: Core Processor Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 02 width: 64 bits clock: 33MHz

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• What is the practical use of IBOs / degenerate vertex in OpenGL?

  - by 0xFAIL

  Vertices in 3D models CAN get cut in the process of optimizing 3D geometry, (degenerate vertices) by 3D graphics software (Blender, ...) when exporting because they aren't needed when reusing a vertex for multiple triangles. (In the current case 3D data is exported from Blender as .ply and read by a simple application that displays the 3D model) Every vertex has a few attributes like position, color, normal, tangent,... But the data for each vertex that is cut through the vertex sharing is lost and is missing in the vertex shader. Modern shader techniques like Bump or Normal mapping require normals/tangents per vertex which are also cut. To use complex shader techniques IBOs must not be used? Or is there a way to use IBOs and retain the data per vertex that was origionally lost?

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• Ubuntu 12.10 desktop/interface not showing on VirtualBox VM after login screen

  - by Jake

  I'm having some trouble with getting my Ubuntu to work on a VirtualBox VM. I made a clean installation of Ubuntu 12.10 on a VM without any errors. I arrive at the login screen, as soon as I press enter it does it's little loading thingy and then screen goes black, then this is all I get: http://i.imgur.com/zULUI.jpg I can access the terminal and pretty much all the other features through it, but I would like to have the GUI properly working. I've been looking around the web and looking at various fixes to similar problems, but can't seem to get it to work. I'm thinking this problem might have to do with the graphics? I'm running Windows 8 Pro as host, if that helps, might be some compatibility issues with VirtualBox in W8... Thanks in advance!

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• Early Morning Sunrise at the Beach Wallpaper

  - by Asian Angel

  Sunrise [DesktopNexus] Latest Features How-To Geek ETC Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions Add a “Textmate Style” Lightweight Text Editor with Dropbox Syncing to Chrome and Iron Is the Forcefield Really On or Not? [Star Wars Parody Video] Google Updates Picasa Web Albums; Emphasis on Sharing and Showcasing Uwall.tv Turns YouTube into a Video Jukebox Early Morning Sunrise at the Beach Wallpaper Data Networks Visualized via Light Paintings [Video]

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• After upgrading to 13.04 Unity interface is not showing

  - by ?????? ?????

  I've upgraded to Raring last night. The upgrade itself went okay, no errors. But when I rebooted the computer afterwards and logged in to my Unity session, all I could see was the Desktop background (together with Desktop icons), and no Unity interface. The Super button shortcut wasn't showing the Dash, there was no top panel etc. Please see the screenshot. As a hint, I'm suspecting it's got something to do with my switchable graphics. I'm running Ubuntu on Acer Aspire AS5830TG with nVidia GT540M and an Intel integrated card. In 12.10 I was using Bumblebee to manage the graphic card switching. During the upgrade I saw something related to nvidia had to be uninstalled, but didn't pay much attention to it. I can't be sure if it has anything to do with my problem though. What could possibly go wrong?

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• How to Access Boot Options 12.04 Live USB

  - by Ryan Kampmeier

  I'm attempting to install 12.04 on my computer but booting from my USB drive results in a blank screen. This has happened since 10.04 and has always been fixed by putting nomodeset in the boot command, but now I can't access the boot options with F6 for some reason. How can I access the boot options? I booted into the live image on a different computer and it worked fine. I'm sure it's because of my Nvidia graphics. When I boot into the live image it shows a small gray box in the lower left corner of the screen and that's it. I can't edit the boot options or do anything else. Thanks in advance.

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• Boot-up hangs unless I manually select the kernel in the bootloader

  - by The Photon

  In my stock Ubuntu install (forgot which critter its named for, about one year old), I am able to boot up normally only if I manually select the kernel in the bootloader (Grub). If I step away and it boots from the default, the system will hang with the word "Ubuntu" on a graphics screen and a few white/red blinking dots beneath it. umb@digdug:~$ uname -a Linux digdug 2.6.32-42-generic #95-Ubuntu SMP Wed Jul 25 15:57:54 UTC 2012 i686 GNU/Linux Synaptics says I have 'grub-pc' version 1.98-1ubuntu-13 installed. My grub.cfg does have default="0" which I would expect to make the default be the first kernel shown in the selection screen. The system is a laptop with an i7 processor, and I have had trouble with some kernels not being able to boot at all in the past, and power management is not working perfectly, but I have not had problems booting the latest kernel (2.6.32-42) if I select it manually in Grub. Any idea what is going on here and how can I fix it so that I can re-boot unattended?

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• How To Use DosBox for Windows 7

  While many modern games use every bit of technology available to give gamers the latest in graphics sound and advanced gameplay some just cannot duplicate the fun that old games used to offer. A lot of fun yet old DOS games will not run on modern computers or operating systems like Windows 7 keeping you from experiencing nostalgic gaming bliss. Thanks to an emulator called DOSBox however you can enjoy many old DOS games on your Windows 7 machines and it does not matter if you are running the 32-bit or 64-bit version of the operating system.... Comcast? Business Class - Official Site Learn About Comcast Small Business Services. Best in Phone, TV & Internet.

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• No HDMI sound output on Thinkpad X1

  - by nickf

  I'm having problems getting my sound to output via HDMI to my TV. When I go to Sound Settings, the HDMI device does not appear. ~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0 I don't know if the video information is helpful, but anyway: ~$ sudo lshw -C video *-display description: VGA compatible controller product: 2nd Generation Core Processor Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:46 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:5000(size=64) Any suggestions for me?

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• Very High CPU usage (100%) from just browsing the Web

  - by cole

  I tested on Firefox and Chromioum. Im at 100% while loading pages which causes them to load slow and when I dont have a application running Im at 40% CPU (At least) Everything is slow basically. Im also already on Ubuntu Classic so im not using Unity. Should I go to 10.04? is that more stable? On windows this wasnt an issue. I have a Dual Boot with XP and a 2.4Ghz Intel Celeron with 768MB RAM and an Nvidia 6200 Graphics card. I heard 10.04 was the most stable. any suggestions?

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• Does the latest version of Ubuntu (12.04) support Unity 3D?

  - by Douglas Combs

  I just installed the latest version of Ubuntu (12.04) 64bit. I am using a Radeon HD 7750 vid card. I think I have the Catalyst driver installed correctly. But when I go to system and look at the details, it shows that my graphics is VESA:01. Does this mean I it, I didn't correctly install my driver? System Specs: MB: ASUS P7P55-M CPU: Intel i5 Quad Core MEM: 4GB DD3 VC: HIS Radeon HD 7750 (1GB DDR5) Thanks for help.

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