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[bugbot <732304@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  Binary package hint: xserver-xorg-video-intel
  
  Just upgraded my PC to natty as of today (alpha-3) and moved the HDD to a new PC barebone based on Intel Sandy-bridge (Core-i7 2600K) with two monitors connected.
  After configureing xorg.conf and booting, kdm came up fine, but the session-type menu top-half is unreadable (garbled).
  After logging in (Desktop effects disabled), everything seems to work for a few seconds with only minor display glitches, but after a random time, or at certain actions (like entering a URL in chrome), the X server freezes. Sometimes it freezes forever, and sometimes it comes back after a few seconds (display goes black for a while).
  The system keeps running fine, and dmesg shows this:
  
  ...
  [   44.619127] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro,commit=0
  [  111.166652] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
  [  111.166659] [drm:kick_ring] *ERROR* Kicking stuck semaphore on render ring
  [  117.179392] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
  [  117.179399] [drm:kick_ring] *ERROR* Kicking stuck semaphore on render ring
  [  143.863963] exe (2839): /proc/2839/oom_adj is deprecated, please use /proc/2839/oom_score_adj instead.
  [  713.763627] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
  [  713.768747] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -11 (awaiting 189057 at 189056, next 189058)
  [  713.769135] [drm:init_ring_common] *ERROR* render ring initialization failed ctl 0001f003 head 00000000 tail 00000000 start 00000000
  [  720.080216] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
  [  720.080228] [drm:kick_ring] *ERROR* Kicking stuck semaphore on blt ring
  [  721.583394] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
  [  721.583407] [drm:kick_ring] *ERROR* Kicking stuck semaphore on blt ring
  [  723.086571] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
  [  723.086582] [drm:kick_ring] *ERROR* Kicking stuck semaphore on blt ring
  [  724.589766] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
  [  724.589799] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -11 (awaiting 189083 at 188507, next 189084)
  
  In the situation shown above the X server had recovered from the freeze.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: xserver-xorg-video-intel 2:2.14.0-4ubuntu1
  ProcVersionSignature: Ubuntu 2.6.38-6.34-generic-pae 2.6.38-rc7
  Uname: Linux 2.6.38-6-generic-pae i686
  Architecture: i386
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: kwin
  DRM.card0.DP.1:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes: 
   edid-base64:
  DRM.card0.DP.2:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes: 
   edid-base64:
  DRM.card0.HDMI.A.1:
   status: connected
   enabled: enabled
   dpms: On
   modes: 1280x1024 1280x1024 1152x864 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 640x480 640x480 640x480 720x400
   edid-base64: AP///////wAi8OomAQEBAS8RAQOAIhuM7txVo1lIniQRUFSt74CBgAEBAQEBAQEBAQEBAQEBMCoAmFEAKkAwcBMAVA4RAAAeAAAA/QAyTRhTDgAKICAgICAgAAAA/ABIUCBMMTc1MAogICAgAAAA/wBDTkQ3NDcyTUtKCiAgAHM=
  DRM.card0.HDMI.A.2:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes: 
   edid-base64:
  DRM.card0.VGA.1:
   status: connected
   enabled: enabled
   dpms: On
   modes: 1280x1024 1280x1024 1152x864 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 640x480 640x480 640x480 720x400
   edid-base64: AP///////wAi8OkmAQEBASoRAQNoIhuM7q/Ap1NFnSQXUFSt74CBgAEBAQEBAQEBAQEBAQEBMCoAmFEAKkAwcBMAVA4RAAAeAAAA/QAyTRhTDgAKICAgICAgAAAA/ABIUCBMMTc1MAogICAgAAAA/wBDTkM3NDJRR1BKCiAgADs=
  Date: Wed Mar  9 23:32:14 2011
  DistUpgraded: Log time: 2011-03-09 22:13:09.851169
  DistroCodename: natty
  DistroVariant: kubuntu
  DkmsStatus:
   nvidia-current, 270.29, 2.6.38-6-generic-pae, i686: installed 
   nvidia-current, 270.29, 2.6.35-27-generic, i686: installed 
   nvidia-current, 270.29, 2.6.38-6-generic, i686: installed 
   vboxhost, 4.0.4, 2.6.38-6-generic-pae, i686: installed
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0122] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Device [1043:844d]
  MachineType: ASUSTeK Computer INC. V-P8H67E
  ProcEnviron:
   LANGUAGE=
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-6-generic-pae root=UUID=217ebb2e-1497-4da5-9aba-7e59c4f101b3 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
  Renderer: Unknown
  SourcePackage: xserver-xorg-video-intel
  UnitySupportTest: Error: command ['/usr/lib/nux/unity_support_test', '-p'] failed with exit code -11: Xlib:  extension "GLX" missing on display ":0".
  UpgradeStatus: Upgraded to natty on 2011-03-09 (0 days ago)
  dmi.bios.date: 11/02/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0212
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: V-P8H67E
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0212:bd11/02/2010:svnASUSTeKComputerINC.:pnV-P8H67E:pvrSystemVersion:rvnASUSTeKComputerINC.:rnV-P8H67E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: V-P8H67E
  dmi.product.version: System Version
  dmi.sys.vendor: ASUSTeK Computer INC.
  version.compiz: compiz 1:0.9.4-0ubuntu4
  version.libdrm2: libdrm2 2.4.23-1ubuntu3
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu1
  version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu5
+ 
+ [lspci]
+ 00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller [8086:0100] (rev 09)
+     	Subsystem: ASUSTeK Computer Inc. Device [1043:844d]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0122] (rev 09) (prog-if 00 [VGA controller])
+     	Subsystem: ASUSTeK Computer Inc. Device [1043:844d]

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https://bugs.launchpad.net/bugs/732304

Title:
  Intel sandy-bridge dual-head GPU hang