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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] [regression] Random display flickering on Kernel 4.8 with dual-screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97450#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] [regression] Random display flickering on Kernel 4.8 with dual-screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97450">bug 97450</a>
from <span class="vcard"><a class="email" href="mailto:direx@betriebsdirektor.de" title="Direx <direx@betriebsdirektor.de>"> <span class="fn">Direx</span></a>
</span></b>
<pre>(In reply to Paulo Zanoni from <a href="show_bug.cgi?id=97450#c10">comment #10</a>)
<span class="quote">> Hello
>
> Can you please confirm whether
> <a href="https://patchwork.freedesktop.org/patch/113642/">https://patchwork.freedesktop.org/patch/113642/</a> fixes the problem?
>
> Thanks,
> Paulo</span >
I've been testing this for a few days now (4.8.1 with your patch) and I have
not seen the bad flickering ever since. At least my Skylake machine is usable
again.
But the flickering issue has not been resolved completely. Every ~10-15 minutes
I am getting one of these messages in my system log, accompanied by a very
short display flicker (on one of my screens):
[19523.129445] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe C (start=132656 end=132657) time 383 us, min 1043, max 1049, scanline
start 1040, end 1065
[20898.089311] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun</pre>
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