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[Launchpad Bug Tracker <881867@xxxxxxxxxxxxxxxxxx>]

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The screen gets lines of various colors and no longer see properly what
was being displayed. The buttons of the windows disappear. The only
thing I see that still works is the mouse cursor. This has happened only
when I am surfing the internet with firefox browser. This requires that
I have to press the power button to send the computer down. This time I
could see the following messages in the logs

Ubuntu 11.04 - the Natty Narwhal - released in April 2011

kern.log

Oct 26 09:16:53 *** kernel: [ 3974.648009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 26 09:16:53 *** kernel: [ 3974.648648] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -11 (awaiting 706761 at 706742, next 706763)
Oct 26 09:16:53 *** kernel: [ 3974.648723] [drm:i915_reset] *ERROR* Failed to reset chip.

syslog

Oct 26 09:16:53 *** kernel: [ 3974.648009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 26 09:16:53 *** kernel: [ 3974.648648] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -11 (awaiting 706761 at 706742, next 706763)
Oct 26 09:16:53 *** kernel: [ 3974.648723] [drm:i915_reset] *ERROR* Failed to reset chip.

*** is the computer hostname

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

-- 
[drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
https://bugs.launchpad.net/bugs/881867
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