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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [regression bisected] Stuttering in games caused by commit 4dfd6486 "drm: Use vblank timestamps to guesstimate how many vblanks were missed""
href="https://bugs.freedesktop.org/show_bug.cgi?id=93147#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [regression bisected] Stuttering in games caused by commit 4dfd6486 "drm: Use vblank timestamps to guesstimate how many vblanks were missed""
href="https://bugs.freedesktop.org/show_bug.cgi?id=93147">bug 93147</a>
from <span class="vcard"><a class="email" href="mailto:dawitbro@sbcglobal.net" title="Dave Witbrodt <dawitbro@sbcglobal.net>"> <span class="fn">Dave Witbrodt</span></a>
</span></b>
<pre>(In reply to Michel Dänzer from <a href="show_bug.cgi?id=93147#c2">comment #2</a>)
<span class="quote">> Does running the affected apps with the environment variable
> LIBGL_DRI3_DISABLE=1 avoid the problem?</span >
Yes, symptoms are completely eliminated in prboom-plus when using that
variable.
(I am currently using a kernel built from a local branch with fa4270d8 and
4dfd6486 reverted, but I have left my previous kernel installed. I tested by
rebooting to the previous kernel, and running prboom-plus with and w/o the
variable set.)</pre>
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