When I try to enable UXA, startx just freezes during startup. I have also noticed, when I run glxgears, it says "Failed to initialize GEM." Could this because I am using the 2.6.28 *server* version of the kernel?
On Sun, Apr 12, 2009 at 3:44 PM, andrehsiqueira <andrehsique...@gmail.com>wrote: > On my notebook Toshiba U205 S5034 - with Intel VGA compatible > controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express > Integrated Graphics Controller (rev 03), I fix the performance issue by > a change into xorg.conf: > > Section "Device" > Identifier "Configured Video Device" > > # It turns off disabling pipa A by a driver after while. > # Its 100 % working workaround. > Option "ForceEnablePipeA" "true" > > # restore COMPIZ performance > Option "AccelMethod" "UXA" > > # Option "FramebufferCompression" "off" > EndSection > > -- > MASTER: Poor graphics performance on Intel > https://bugs.launchpad.net/bugs/252094 > You received this bug notification because you are a direct subscriber > of the bug. > > Status in X.org xf86-video-intel: Confirmed > Status in “linux” source package in Ubuntu: New > Status in “xserver-xorg-video-intel” source package in Ubuntu: In Progress > > Bug description: > I experience significant performance loss with ubuntu 8.10 alpha 3 with my > Intel DG965WH based system and SVDO/ADD2 video card. Actually, the > performance loss started with ubuntu 8.04.1; I upgraded to see if there was > any performance gain with the new version. While "glxgears" produced values > between 1580 fps and 1496 fps with ubuntu 7.04 and 7.10, respectively, now I > can only achieve something like 445 fps with ubuntu 8.10 alpha 3. I get an > error message when starting glxgears that "TTM" was not available and > classic mode would be used. Similary, the flight simulator "flightgear" > achieves frames rates of 1-2 fps only. > My suspicion is that some of the hardware acceleration features of the > X3000 system are not being used, and I don't know how to activate them with > the new xorg.conf structure and the underlying automatic configuration > approach. > I would like to see the graphics performance go back to the values achieved > in ubuntu 7.04 and 7.10. > Your help / comment is greatly appreciated. > Bingo > > [Update] > Intel upstream has been in a multi-year effort to rearchitect X and the > Intel 2D and 3D driver to provide better performance. While this work is > underway, people are seeing variations in performance levels from version to > version, for a variety of reasons. There are probably multiple unrelated > bugs being reported in the comments here. > > It is important to note and remember that glxgears is *not* a benchmark > tool. It simply measures how fast the driver writes images to the screen, > whereas most 3D applications are limited by render speed, not merely blit > speed. Instead use a 3D game (flightgear, tremulous, etc.) that has a real > rendering workload to make comparisons. > > If you're definitely seeing performance problems and are able to narrow it > to a specific cause, please do not comment onto this bug report - it's too > lengthy and rambling already, and your issue will just be lost in the noise. > Instead, make a new report and please be as specific as possible with exact > steps to reproduce and as much detail and logs as you can. See > http://wiki.ubuntu.com/X/Reporting for tips on making a good X bug report. > > A troubleshooting guide, with additional background about performance > issues on Intel is available at: > > https://wiki.ubuntu.com/X/Troubleshooting/IntelPerformance > -- MASTER: Poor graphics performance on Intel https://bugs.launchpad.net/bugs/252094 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
