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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Occasional GPU Hang: ecode 9:0:0x84dffff8, kernel: 4.7.3,"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97805#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Occasional GPU Hang: ecode 9:0:0x84dffff8, kernel: 4.7.3,"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97805">bug 97805</a>
from <span class="vcard"><a class="email" href="mailto:artyom.shinkaroff@gmail.com" title="Artem Shinkarov <artyom.shinkaroff@gmail.com>"> <span class="fn">Artem Shinkarov</span></a>
</span></b>
<pre>A late update from my side.
I compiled a fresh kernel from the intel-drm repository (commit
9aa8c0cdbc076bcc0486d7a31922a0f77c032fe7) as I was suggested, and I am running
it for several weeks now.
Most of the annoying behaviour went away. However, there are few things that
are still there. First of all, I occasionally see the following message in the
dmesg:
[ 397.680131] [drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe A
FIFO underrun
which causes a short blink of the screen.
Secondly, just today, a computer hang and the later inspection of system log
revealed stack traces caused by vblank wait time outs in functions
"intel_atomic_commit_tail" and "drm_wait_one_vblank". Stack traces attached as
[2016-12-10-dmesg.txt]. I don't think I can extract more info, as I had to do
a hard reset.
Any suggestions?</pre>
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