[Bug 946899] Re: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

[Andrew Seguin]

Just a small "happens to me to" comment, with one small extra detail
about kernel versions:

After Ubuntu 12.04 with automatic updates picked up kernel
3.2.0-39-generic, all computers on our campus (20+ with the problem)
with Pentium G840 for CPU (Intel i915 graphics) started having that
problem.

We resolved the problem temporarily by installing linux-
image-3.2.0-38-generic and removing linux-image-3.2.0-39-generic.

The old fix described in the kernel bug report was not working for us
(kernel command line option i915.i915_enable_rc6=0)

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https://bugs.launchpad.net/bugs/946899

Title:
  [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU
  hung

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