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[Launchpad Bug Tracker <805586@xxxxxxxxxxxxxxxxxx>]

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Machine details:
Lenovo Thinkpad T400
Intel® CoreTM2 Duo processor P8400
Integrated Intel® GMA 4500M HD
Ubuntu 2.6.38-8-generic-pae (32bit)
uname -m i686

Symptoms when the problem occurs:
Display stops responding. There are 3 types of failures noticed:
- Display may randomly flicker (not garbage but toggles between desktop and couple open windows)
- Mouse moves but everything else is forzen (including computer time)
- Display is frozen, includes mouse pointer not moving
When the display is frozen, we are able to ssh into the machine. Further we are able to play music etc using the hot keys.

Problem has occured:
Can not correlate to any particular program or task. Seems to be random in nature.
- Has happened when actively using the laptop on AC power without the laptop ever going to sleep or screen saver mode after power up (happened within 10 minutes of powerup). Google Chrome was open along with Clementine music player at the time of failure.
- Has happened after 4 days of actively using laptop (during the 4 days laptop was put to sleep and woken up multiple times

[drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[ 1467.867755] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -11 (awaiting 788345 at 788325, next 788372)
[ 1468.376145] [drm:i915_reset] *ERROR* Failed to reset chip.
[ 1468.431602] show_signal_msg: 24 callbacks suppressed
[ 1468.431607] compiz[1490]: segfault at 0 ip b6fcd64d sp bff88998 error 6 in libc-2.13.so[b6eb8000+15a000]

modinfo i915
filename:       /lib/modules/2.6.38-8-generic-pae/kernel/drivers/gpu/drm/i915/i915.ko
license:        GPL and additional rights
description:    Intel Graphics
author:         Tungsten Graphics, Inc.
license:        GPL and additional rights
srcversion:     0974A24E53B65781A91250E

modinfo drm
filename:       /lib/modules/2.6.38-8-generic-pae/kernel/drivers/gpu/drm/drm.ko
license:        GPL and additional rights
description:    DRM shared core routines
author:         Gareth Hughes, Leif Delgass, José Fonseca, Jon Smirl
srcversion:     CC0F28C4FDAC8FEAD451313

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3.1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
Date: Mon Jul  4 12:49:31 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 4.0.6, 2.6.38-8-generic-pae, i686: installed 
 fglrx, 8.841, 2.6.38-8-generic-pae, i686: installed 
 tp-smapi, 0.40, 2.6.38-8-generic-pae, i686: installed
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:2112]
   Subsystem: Lenovo Device [17aa:2112]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: LENOVO 2764CTO
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 LANGUAGE=en_US:en
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae root=UUID=e929480c-e5e9-4ac2-9372-93e541c5c3e6 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/06/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET91WW (3.21 )
dmi.board.name: 2764CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7UET91WW(3.21):bd12/06/2010:svnLENOVO:pn2764CTO:pvrThinkPadT400:rvnLENOVO:rn2764CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2764CTO
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty1
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

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


** Tags: apport-bug compiz-0.9 freeze i386 natty running-unity ubuntu
-- 
i915 Hangcheck timer elapsed... GPU hung
https://bugs.launchpad.net/bugs/805586
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