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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - "Avoid waitboosting" (e9af4ea2b9e7) now prevents GPU boosting"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107111#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - "Avoid waitboosting" (e9af4ea2b9e7) now prevents GPU boosting"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107111">bug 107111</a>
from <span class="vcard"><a class="email" href="mailto:freedesktop@nmacleod.com" title="freedesktop@nmacleod.com">freedesktop@nmacleod.com</a>
</span></b>
<pre>Apologies for the delay in responding, I've been collecting information.
I produced 4 test builds for users that are experiencing the visual stutter.
These builds are based on 4.17.4 where e9af4ea2b9e7 is not reverted:
#0703b, includes patch "reverting the intel_display chunk so that it always
boost after the vblank miss."[1]
#0703c, includes patch "might be an interesting compromise"[2]
#0703d, includes patch "nudge"[3]
#0703e, includes patches "nudge"[3] + "nudge2"[4]
Results (from 2 users)[5]:
#0703b: visual stutter still present
#0703c: no visual stutter, but audio issues (both users) - delayed and/or
stuttering audio
#0703d: no visual stutter and no audio issues
#0703e: no visual stutter and no audio issues
Regarding the audio issues, one user hasn't been able to reproduce[6] and the
other won't be able to test for a while[7], so this could be a red herring.
Hopefully this information is useful when deciding in which direction to go!
1. <a href="http://ix.io/1fYp">http://ix.io/1fYp</a>
2. <a href="http://ix.io/1fYI">http://ix.io/1fYI</a>
3. <a href="https://bugs.freedesktop.org/attachment.cgi?id=140462">https://bugs.freedesktop.org/attachment.cgi?id=140462</a>
4. <a href="http://ix.io/1fYX">http://ix.io/1fYX</a> (4.17.4 compatible version of id=140463)
5. <a href="https://forum.kodi.tv/showthread.php?tid=298462&pid=2749048#pid2749048">https://forum.kodi.tv/showthread.php?tid=298462&pid=2749048#pid2749048</a>
6. <a href="https://forum.kodi.tv/showthread.php?tid=298462&pid=2749440#pid2749440">https://forum.kodi.tv/showthread.php?tid=298462&pid=2749440#pid2749440</a>
7. <a href="https://forum.kodi.tv/showthread.php?tid=298462&pid=2749557#pid2749557">https://forum.kodi.tv/showthread.php?tid=298462&pid=2749557#pid2749557</a></pre>
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