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<body><span class="vcard"><a class="email" href="mailto:conselvan2@gmail.com" title="Ander Conselvan de Oliveira <conselvan2@gmail.com>"> <span class="fn">Ander Conselvan de Oliveira</span></a>
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<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [HSW, BDW, SKL] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91883">bug 91883</a>
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<td>conselvan2@gmail.com
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [HSW, BDW, SKL] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91883#c41">Comment # 41</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [HSW, BDW, SKL] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91883">bug 91883</a>
from <span class="vcard"><a class="email" href="mailto:conselvan2@gmail.com" title="Ander Conselvan de Oliveira <conselvan2@gmail.com>"> <span class="fn">Ander Conselvan de Oliveira</span></a>
</span></b>
<pre>(In reply to Maarten Lankhorst from <a href="show_bug.cgi?id=91883#c40">comment #40</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=128451" name="attach_128451" title="Move LUT until after vblank evasion.">attachment 128451</a> <a href="attachment.cgi?id=128451&action=edit" title="Move LUT until after vblank evasion.">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=91883&attachment=128451'>[review]</a> [review]
> Move LUT until after vblank evasion.
>
> Does this fix the bug for those that have the issue with vblank taking a
> long time? 100+ us.</span >
I gave this patch a try using the kms_pipe_color color igt test. In a 100 runs
of the ctm-red-to-blue-pipe0, without this patch I would get the "Atomic update
failure" message roughly 5. With the patch I haven't seen the message, even
after repeating the experiment a few times.</pre>
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