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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT SNB] kms_pipe_crc_basic/hang-read-crc-pipe-? vblank wait timed out"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95125#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT SNB] kms_pipe_crc_basic/hang-read-crc-pipe-? vblank wait timed out"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95125">bug 95125</a>
from <span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span></b>
<pre>These vblank wait timeouts seems to plague the dell xps machine.
Could be related to
commit 8a292d016d1c ("drm/i915: Make RPS EI/thresholds multiple of 25 on
SNB-BDW")
since the symptoms I was fixing there seemed to indicate scheduling/timer
interrupts getting lost. Perhaps we're still losing vblank interrupts, but to a
lesser degree? Playing around with the RPS EI/threshold values a bit more might
be warranted.</pre>
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