linux-kernel - "Hangcheck timer elapsed... GPU hung" in 3.8.0-rc2

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Date:	Thu, 3 Jan 2013 15:46:24 -0500
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	Daniel Vetter <daniel.vetter@...ll.ch>
Cc:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: "Hangcheck timer elapsed... GPU hung" in 3.8.0-rc2

I got a crash after a few minutes of running 3.8.0-rc2, was able to
switch to a vt and look at dmesg:

  [  490.962545] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
  [  490.963019] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
  [  492.961446] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
  [  492.965613] [drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged!
  [  492.965621] [drm:i915_reset] *ERROR* Failed to reset chip.  

Previously I was on 3.6.10-2.fc17.x86_64, which didn't have any such
problem.

dmesg, config, and i915_error_state available from:

	http://fieldses.org/~bfields/3.8-hang/

--b.
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