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[owise1 <782880@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

I am getting random lockups (every day or so) when the system activates
the screensaver.  Ctrl Alt Backspace does not work but can Ctrl Alt F1
to cmd line.  Can also ssh to machine.  Requires a restart to get
desktop back.

kernal log has following error that may be cause:

May 15 09:11:49 david-desktop kernel: [400707.444511] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May 15 09:11:49 david-desktop kernel: [400707.444660] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 8280004 at 8280003)

The time stamp on the next entry is when I reboot machine.

Apport info collected after the fact

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic i686
Architecture: i386
DRM.card0.VGA.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1920x1080 1680x1050 1280x1024 1280x1024 1280x960 1152x864 1152x864 1024x768 1024x768 832x624 800x600 800x600 640x480 640x480 720x400
 edid-base64: AP///////wAebVZXAQEBAQESAQNoMx146sKFpFZNnCUSUFSla4CBgIGPcUCzAIFPcU8BAQEBGjaAoHA4H0AwIDUAVlAhAAAaAAAA/QA4Sx5TEQAKICAgICAgAAAA/ABNMjM2MkQKICAgICAgAAAA/AAKICAgICAgICAgICAgAKg=
Date: Sun May 15 13:39:23 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: . .
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-28-generic root=UUID=d8775207-cb26-45f4-b37e-c3394bc68c0a ro quiet splash
ProcEnviron:
 LANG=en_AU.utf8
 SHELL=/bin/bash
SourcePackage: xorg
dmi.bios.date: 01/02/2008
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: I-45CV(Intel i945GC-ICH7)
dmi.board.vendor: http://www.abit.com.tw/
dmi.board.version: 1.0
dmi.chassis.type: 3
dmi.chassis.vendor: PhoenixAward
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd01/02/2008:svn.:pn.:pvr6.0:rvnhttp//www.abit.com.tw/:rnI-45CV(Inteli945GC-ICH7):rvr1.0:cvnPhoenixAward:ct3:cvr:
dmi.product.name: .
dmi.product.version: 6.0
dmi.sys.vendor: .
system:
 distro:             Ubuntu
 codename:           maverick
 architecture:       i686
 kernel:             2.6.35-28-generic

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 maverick

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https://bugs.launchpad.net/bugs/782880

Title:
  System hangs when screensaver active