Public bug reported: Binary package hint: xserver-xorg-video-intel
With the following Intel controller on Jaunty/9.01: 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 03) And updated kernel as recommended in http://ubuntuforums.org/showthread.php?t=1130582 Linux presto 2.6.30-02063003-generic #02063003 SMP Sat Jul 25 10:57:13 UTC 2009 i686 GNU/Linux Intel driver from PPA https://launchpad.net/~ubuntu-x-swat/+archive/x-updates/ Package: xserver-xorg-video-intel Architecture: i386 Version: 2:2.7.1-0ubuntu1~xup~1 xorg.conf Section "Device" Identifier "Configured Video Device" Driver "intel" Option "AccelMethod" "exa" Option "EXAOptimizeMigration" "true" Option "MigrationHeuristic" "greedy" Option "Tiling" "true" I got the following results: PPracer, fullscreen 1280*800: UXA 11-15fps, EXA 25-30fps Fullscreen flash noticeably worse with UXA (tearing, dropped frames) The same ratio results (UXA giving about half frame rate and worse 2D video performance than EXA) was noted with the 2.4 Intel driver from Intrepid, Jaunty stock 2.6.3 driver, and the X-updates 2.7.1 driver. Performance with the downgraded 2.4 driver was noticeably worse (EXA). Upgrading from stock 2.6.28.15 kernel to 2.6.30 gave about a 20% improvement in framerate on ppracer. -------- RETESTED WITH LATEST VERSIONS xorg-edgers PPA intel driver Intel driver Version: 2:2.8.0+git20090814.926c7e7d-0ubuntu0sarvatt~jaunty 2.6.30-02063005-generic 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 03) Due to the 2.8.0 driver EXA is no longer available, so UXA is used whatever is in the config file: (WW) intel(0): Option "AccelMethod" is not used #new comment line in Xorg.0/log Unfortunately, I can't confirm William Grant's test results on Karmic, above. With this combination (tested both with and without kernel modesetting) the framerate in ppracer is cut to 11-14fps, and fullscreen video is choppy. This is roughly what was achieved with 2.6.3 or 2.7.1 drivers with UXA, and is about half the EXA framerate. It seems this degradation does not apply to all Intel chipsets, since https://wiki.ubuntu.com/X/UxaTesting has users reporting improved performance. ProblemType: Bug Architecture: i386 DistroRelease: Ubuntu 9.04 Package: xserver-xorg-video-intel 2:2.8.0+git20090814.926c7e7d-0ubuntu0sarvatt~jaunty ProcEnviron: LANG=en_GB.UTF-8 SHELL=/bin/bash ProcVersion: Linux version 2.6.30-02063005-generic (r...@zinc) (gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)) #02063005 SMP Mon Aug 17 10:27:38 UTC 2009 SourcePackage: xserver-xorg-video-intel Uname: Linux 2.6.30-02063005-generic i686 UnreportableReason: This is not a genuine Ubuntu package ** Affects: xserver-xorg-video-intel (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 -- (UXA) xserver-xorg-video-intel 2D and 3D performance is much reduced from EXA https://bugs.launchpad.net/bugs/416604 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
