[Bug 75394] System hangs randomly with error message: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75394

--- Comment #48 from Chris <cpollock at embarqmail.com> ---
This is now getting into the realm of the absurd. No matter what kernel version
I run in the 3.13.* series the system will lockup after a day or so with the
above error. Today it locked up at 9:09am CST - Mar  1 09:09:00 localhost
kernel: [182499.820012] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer
elapsed... render ring idle. Again with the black screen and mouse cursor only.
Cannot get to a log-in screen with CTRL-ALT-F1, CTRL-ALT-BKSPACE or with
CTRL-ALT-ESC. And again, all background processes continue running as if
nothing is happening. The current kernel version being run is -
3.13.0-46-generic #76-Ubuntu SMP Thu Feb 26 18:52:13 UTC 2015 x86_64 x86_64
x86_64 GNU/Linux

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