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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54226#c135">Comment # 135</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54226">bug 54226</a>
from <span class="vcard"><a class="email" href="mailto:philip@turmel.org" title="Phil Turmel <philip@turmel.org>"> <span class="fn">Phil Turmel</span></a>
</span></b>
<pre>For what its worth, running 3.13.7 greatly mitigates this bug, to where the
dead time is barely noticeable. It happened three times in short order here
and I didn't notice any of them:
[ 4562.551141] [drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring
[ 4582.530028] [drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring
[ 4633.476199] [drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring</pre>
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