[Bug 54226] [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=54226

--- Comment #159 from Andre Robatino <robatino at fedoraproject.org> ---
I am seeing

[drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring
idle

followed by a graphics freeze and the need to reboot (if I can) in Fedora 20
with the latest updates including the 3.15.4 kernel.

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