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[Daedalus Prime <732304@xxxxxxxxxxxxxxxxxx>]

I am seeing something similar with the released 11.04 distribution.  The
symptom is that I'll leave the computer running and when I come back it
is hung, either with a black screen or a frozen screensaver.  The only
way I have found to recover is a power cycle.  Browsing the logs, I see
the following two lines repeated every 1-2 seconds:

May  3 12:48:24 david-laptop kernel: [54980.004156] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May  3 12:48:24 david-laptop kernel: [54980.004165] [drm:kick_ring] *ERROR* Kicking stuck wait on render ring

Does this sound like the same bug or something new?

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

Title:
  [sandybridge-gt2+] Intel sandy-bridge dual-head GPU hang