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  • How do you ensure consistent experience across multiple graphics cards (or even driver versions)?

    - by Grigory Javadyan
    So I was writing a simple 2D game with OpenGL and SDL and had this problem when there was awful tearing when running in windowed mode (even though I explicitly asked SDL_SetVideoMode to use double buffering). Didn't worry about it all too much because most of the time the game grabs the entire screen, windowed mode is just for debugging. Anyway, yesterday I updated my nVidia drivers and tearing disappeared, the game runs smooth and looks nice in windowed mode too. I can see how the problem may be in the graphics driver, but this leads to a question. Obviously, professional game developers have to deal with a lot of different hardware/software configurations. What are the techniques they use to make sure the game looks the roughly the same on different graphics cards or even the same model of graphics card, but with different driver versions?

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  • Cannot make NVIDIA driver work with Ubuntu 12.10

    - by user1293231
    I seem to have a problem similar to many but I didn't manage to get it solved: have a Lenovo N581 with an NVIDIA GeForce 610M have just installed a fresh Ubuntu 12.10 64 bits, + KDE and am trying to have my NVIDIA card work. Have tried all workarounds posted: purge nvidia, install kernel source/headers and then reinstall nvidia-current-updates (or just nvidia-current), do "sudo nvidia-xconfig". It does create a xorg.conf but does not much (no Module Section by the way). The result is that my system (jokey) tells me that the driver is there but not in use and I only get a 640x480 resolution. If I try to launch nvidia-settings it does indeed tell me that the nvidia driver is not used. I do all this under kde but I guess it does matter at this stage. Any hint of how to resolve this? I feel stuck and cannot use any of the acceleration which is partly why I got that laptop in the first place... thanks for any help/advise you may provide!

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  • How can I stop pixel seams appearing in adjacent mesh boundaries due to floating point imprecision?

    - by ufomorace
    Graphics cards are mathematically imprecise. So when some meshes are joined by their borders, the graphics card often makes mistakes and decides that some pixels at the seam represent neither object, and unwanted pixels appear. It's a natural behaviour on all graphics cards. How are such worries avoided in Pro Games? Batching? Shaders? Different tangent vectors? Merging? Overlaping seams? Dark backgrounds? Extra vertices at borders? Z precision? Camera distance tweaks? Screencap of a fix that ended up not working:

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  • Ubuntu on low powered laptop

    - by zkent
    First off, I am new to Ubuntu. I come from a Windows background (DOS before that) and am loving it so far. I installed it on an older Dell laptop that I wanted to get another year out of. I set this machine up primarily as a LAMP development machine for a project I am working on. The machine is a Vostro 1500 and it has 4GB RAM (maxed) and an upgraded hard drive. I can't watch YouTube videos for long before it starts to overheat and start acting sporadic. I can live without YouTube but every so often the application switching (alt-tab) gets slower and begins not showing all applications and the Dash home quits displaying properly. I am sure I am asking a lot of this old machine. What I really want to know is: are there any settings in Ubuntu that allow me to lower the graphic effects (fade-ins, transparencies, fancy transitions, etc) that would be less taxing on the video card?

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  • Can't install Ubuntu 13.10 from 12.04 lts

    - by Matt Carle
    I have ubuntu 12.04 lts installed on my hp pavilion and I want to try 13.10. When I try to boot into the livecd, I get the purple ubuntu splash screen, then a blackscreen where some text flashes (to fast to see what it says) then it goes to a black screen and stays there. I know the installation disc is not the problem because I've successfully installed it on a different machine using the same disc. I've been trying to troubleshoot the issue for a while now and no luck. I have a radeon hd 8250 card. I know it's not much to go off of but any help would be greatly appreciated! Thanks!

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  • Acer AO722 flickering screen

    - by user1131702
    The screen on my Acer Aspire One netbook (AO722) flickers for a few minutes when Ubuntu awakens the screen after a period of inactivity. I am pretty sure this is not a hardware issue, as I never see this problem in Windows and both of my Acer netbooks exhibit the same problem. I see the flickering in all recent versions of Ubuntu -- 11.10, 11.04, and 10.10. Surprisingly I haven't been able to find a lot of information about this problem online. I believe the video card in this netbook is Radeon 6290 paired with AMD C-60. I am using the default open source video driver. Would appreciate any tips on how to get rid of the flicker. Thanks!

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  • ubuntu 12.04: Why my laptop is consuming more power than 11.10?

    - by sanz
    I had 11.10 X86 on my Asus laptop (sandybridge, Nvidia 520M). I had 8 hours' battery life with Bumblebee and Jupiter. Average battery discharge rate was around 10w. Later I changed, not upgraded, to 12.04.1 AMD64. I installed Jupiter. But there is no "restricted drivers" available so I guess Bumblebee will not work. So I removed nvidia drivers. Now I only get 4 hours' battery life. Average battery discharge rate is around 19w. The removal of nvidia driver did not make any difference. What's the cause? Nvidia video card not disabled or 64b version of Ubuntu?

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  • Installed Ubuntu on a macbook pro and am running into errors with internet

    - by user209270
    I recently installed Ubuntu (64 bit, 12.04) on a mid-2012 Macbook Pro, and I've been having some really annoying issues. Chief among them is that my wireless doesnt seem to function properly. I've installed Ubuntu on this mac before, and again this time the drivers for the wireless card were missing. I, using something along the lines of sudo su apt-get update apt-get upgrade apt-get b43-fwcutter firmware-b43-installer A new problem I've been experiencing however is that none of the networks available in my home show up. I've been able to connect theto themm by going into "Connect to hidden networks" and typing in the network name and password, but when I restart the computer my network (let's just name it "Network1"), doesnt show up. I tried going into "Edit Connections" and it shows up in the wireless tab, but it is never connected to automatically or shows up in the drop-down menu. Any help?

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  • Ubuntu 12.10 64b does not shutdown

    - by user108264
    I am a new linux user so i am not familiar with what actually is needed to check. When shutting down or trying to restart i get a screen with yellow letters and the system does not close or restart. I have to shut down manually. I can't type all the numbers but i will give the last ones. [90102.232650] [ end-trace 435966f5b367871 ] this seems to have happened after i downgraded the xorg so i can get drivers for my ATI card(4850HD). The suspend command works fine.

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  • Ubuntu 10.10 screen goes nuts and unreadable

    - by ChazD
    Running Ubuntu 10.10 in its own partition, also have Oracle Virtualbox 4 with Windows XP. Because i previously had a problem with a dark screen when i let the laptop on and i didn't use it for a long while i had set Power settings to Never sleep, never let the Display sleep. Monitor on install set to Laptop resolution 1400 by 1050, refresh rate 60 Hz, rotation Normal. The problem was when the computer was left on and i returned after about an hour, the screen was unreadable, similar to what used to happen to graphics cards before multisync became normal. So it appears as though the graphics card was asked to use a resolution it couldn't handle and went nuts. I had to power off the system, on restart everything was fine. Thanks for any suggestions. ChazD

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  • huwai 1731 ( mobile broadband ) not working with dell inspiron 3521

    - by N.Ramkumar
    Please help, one of my friend shared this note ( enclosed below), I used these codes and my laptop is able open the data card but I am not getting any signals. I am able to work with wired connection, but wi-fi and mobile broad band are not working. Please help. sudo apt-get purge usb-modeswitch sudo apt-get update sudo spt-get install usb-modeswitch sudo apt-get update gksudo gedit /lib/udev/rules.d/40-usb_modeswitch.rules Once you enter these above commands 40-usb_modeswitch.rules text file will open. Then, copy below mentioned lines into 40-usb_modeswitch.rules text file. #Huawei E1731 ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="1446", RUN+="usb_modeswitch '%b/%k'" Save the file Then type : sudo apt-get update Then restart the machine.

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  • Lenovo g510 webcam not detected

    - by user280433
    I have lenvo g510. Cheese and guvcview don't detect my webcam. Its my lsubs: Bus 002 Device 002: ID 8087:8000 Intel Corp. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:8008 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub How to fix it?

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  • Minecraft program frame rate is very slow

    - by Cade
    I have recently downloaded Minecraft to Ubuntu 12.04. It launches and plays successfully, however- the frame rates for the game are extremely slow. They never go past 9 fps and usually drop below 3 fps. I have been a Windows XP user for years and have just recently switched to Ubuntu, so I'm not an expert with this OS. My video card is a Diamond Stealth s60 with Radeon 7000. I don't know what other information you guys need but if you ask for it, and would please tell me how to get to it, I will tell you as soon as I can. Thanks for your help.

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  • Any chance for fully working X1600 PCI-E ID 71c3/Unity under Ubuntu 12.04?

    - by user74975
    How can I get Unity working under an ATI Radeon X1600 PCI-E on Ubuntu 12.04? I'm rather Windows guy, but I can do some things with CLI. ATI seems to have ended support for this card for both Windows and Linux. Theres no proper driver in jockey; binary driver from Software Center doesn't give Unity, just Unity 2D. Yes, I've tried the commands from this post - without any positive results; should I try installing drivers manually?

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  • Fan working non-stop on a Dell Inspiron 5110

    - by cankemik
    First of all i'm new at ubuntu. I've only tried 11.10 before 12.04. Since then my notebook's(Dell Insprion 5110) fan was working non-stop. And also battery lasts in 2 hours. So i made a research. Some said it's about graphics card driver. I've tried so many things, so many codes but i get no result. I must say that i've tried ironhide and bumblebee. non of them worked 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev ff)

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  • Ubuntu 11.10 problem with Nvidia

    - by dariush
    I have an acer with a Gforce graphics card. I installed ubuntu 11.10 and it was working properly until I installed Nvidia drivers via additional drivers, I hit "nvidia-xconfig" in terminal and then reboot. At startup lightdm fails to start. I changed /etc/X11/xorg.conf file back to default and reboot. It works properly, but with the default Ubuntu driver. I want to reconfigure Nvidia and use it. Can anyone tell me what should I do?

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  • Setting up wireless drivers in Ubuntu 9.10?

    - by xdya
    I've just installed ubuntu to a notebook, deleting the windows xp that was installed before, so now nothing works I couldn't solve the problem of getting the blank screen with the versions 12.. and 10.. so now there is 9.10 installed, which works fine. Well, it boots up at least. I can't get working the drivers though. I'm totally new to linux, and I've read in some forums that in this version you have to install all of them yourself, because the system won't detect them automatically. Therefore I tried to find the drive for my wireless card, but actually I have no clue how to get it work. Could someone please help me out? So here are the specs: System installed as mentioned: Ubuntu 9.10 Computer: Acer Aspire 3100 Wireless according to laptop specs: 10/100 Fast Ethernet, Wake-on-LAN ready, Acer InviLink™ 802.11b/g Wi-Fi CERTIFIED I would really appreciate some detailed description to setting up my internet Thanks!!

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  • How do I adjust the resolution on an Intel gma x3100?

    - by Salinski
    I'm with fresh install of 12.04, having gma x3100 as a video card. The problem is I own 19" monitor with native resolution of 1280x1024 but can't force screen resolution on more then 1024x768 ~$ xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9 I been digging up some info for the past 2 days, yet haven't found any solution. Even tried using gdm instead of lightdm. Any help is appreciated.

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  • Wireless not working with a Compaq Presario CQ57

    - by X I V
    This is the first time I installed ubuntu. I first installed 11.04 then upgraded. When I installed 11.04, the wireless card was detected and the driver was installed instantly. Everything worked so far. The thing is that as soon as I upgraded to 12.04, it stopped working. I've tried several solutions from all of the internet but nothing seems to work. What can I do? I really don't know much about ubuntu.

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  • How do I get a Realtek Wireless USB Airlink101 AWLL5088 working?

    - by Tobias_Mann
    I am running Ubuntu 11.10, 32bit. I ordered them a Realtek Airlink101 AWLL5088 based upon the relative ease for linux installation. I am having trouble installing the drivers. I copied the drivers to /usr/src/ and ran sudo ./install.sh from that director listed above. I have tried ndiswrapper, and allowing the default drivers, but with no luck. It seems to continue to try and use the default free drivers, even though I have blacklisted them using the guide described here. There was no error, I was asked which card I was using. I looked at the packaging and at the support page, and guessed number 2, allowed to finish, and rebooted. It continued detect the wireless network after the reboot, but would never complete the connection. I would appreciate any feedback. I am kind of stuck trying to figure this out.

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  • kubuntu 12.04 runs slowly

    - by randy
    i have a 3ghz amd 64 dual core am3 socket processor, asus mom board, 4GB ram, 8800GTS nividia video card with 500MB ram. installed kubuntu 12.04 and very laggy. select menu and 20 seconds later the menu pops up. i switched to classic menu and that seemed to help. what direction should i look first to get this running better? video perhaps? i had ubuntu 11.04 on this machine previously and had no problems with speed.

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  • No analog audio in 13.10

    - by danepowell
    I've installed 13.10 on a machine that was previously running Windows 8, and audio output isn't working out of the box. It worked fine in Windows, and the speakers work fine when hooked up to a laptop, so it must an incompatibility between Ubuntu and the motherboard. If I go to sound settings, "Built-in Audio" is selected (SPDIF is also available). This is an Intel Z77 motherboard with an integrated Creative CA0132 sound chipset. I've tried booting a live image of 13.10 (to check for a corrupt install), and the same problem exists. If I boot a live image of 13.04, the only audio output listed in sound settings is a "dummy" card. I've already tried basic troubleshooting steps, such as removing pulseaudio config directories, force-restarting alsa, and making sure the speakers aren't muted in the alsa mixer. At this point, I'm totally stumped :(

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  • Creating a WARP device in managed DirectX

    - by arex
    I have a very old graphic card that only supports shader model 2, but I need shader model 3 or up for the app I am developing. I tried to use a reference device but it seems to run very slowly, then I found some samples in C++ that allows me to change to a WARP device and the performance is good. I am using C# and I don't know how to create such type of device. So the question is: how do I create a WARP device in C#? Thanks in advance.

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  • Install Ubuntu on iMac 21.5" (mid 2011)

    - by Mystic Mark le Maverick
    I has a dual boot system with MacOSX 10.8.2 and Microsoft Windows 7 Home Premium x64. I would like to install Ubuntu alongside the two existing operating systems for cross platform development purposes. My System specs are listed below. iMac 21.5-inch (mid 2011) Intel Core i7 @2.80GHz AMD Radeon HD 6770M Facetime HD Internet Camera Thunderbolt port Wireless Airport adapter card Apple 8x Superdrive Apple Magic Mouse and wired keyboard with numeric keypad Will rEFIt install properly on my machine too? Thanks you very much for the help.

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  • How do professional games avoid showing pixel seams in adjacent mesh boundaries due to decimal imprecision?

    - by ufomorace
    Graphics cards are mathematically imprecise. So when some meshes are joined by their borders, the graphics card often makes mistakes and decides that some pixels at the seam represent neither object, and unwanted pixels appear. It's a natural behaviour on all graphics cards. How are such worries avoided in Pro Games? Batching? Shaders? Different tangent vectors? Merging? Overlaping seams? Dark backgrounds? Extra vertices at borders? Z precision? Camera distance tweaks? Screencap of a fix that ended up not working:

    Read the article

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