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[Gero Mudersbach <geroxp@xxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-intel

I get the following error as a dmesg output right after the xserver
freezes (mouse still works, ssh too):

[ 9136.844018] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[ 9136.844035] render error detected, EIR: 0x00000000
[ 9136.844047] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 1032585 at 1032582)
[ 9155.537443] [drm:i915_gem_idle] *ERROR* hardware wedged

I can reproduce the bug with and without compositing enabled. Kernel parameter "nomodeset" doesn't have any effect on this. 
The bug seems to happen more often when setting "UXA" in xorg.conf. With "EXA" I have render errors but less often complete freezes. 

When I want to reproduce the bug all I have to do is doing fast
scrolling with konqueror or firefox on a webpage with many graphics.

On Lucid lynx I have a similar behaviour (see #528467).

With patches from https://bugs.freedesktop.org/show_bug.cgi?id=24789#c38
I could make the bug happen less often but not completelely disappear.

ProblemType: Bug
Architecture: i386
Date: Fri Feb 26 15:14:07 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Package: xserver-xorg-video-intel 2:2.9.0-1ubuntu2.1
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu10
 libgl1-mesa-glx 1:7.4.1-1ubuntu6+karmic
 libdrm2 1:2.4.11-2+karmic3
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2.1
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.33-rc8-custom i686
XsessionErrors:
 (polkit-gnome-authentication-agent-1:2930): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (firefox:2945): GLib-WARNING **: g_set_prgname() called multiple times
system:
 distro:             Ubuntu
 architecture:       i686kernel:             2.6.33-rc8-custom

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

-- 
[i855] GPU hung with intel i915 driver
https://bugs.launchpad.net/bugs/528491
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