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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - ZaphodHeads + TearFree cause what looks like severe double buffering synchronization problems"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104343#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - ZaphodHeads + TearFree cause what looks like severe double buffering synchronization problems"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104343">bug 104343</a>
from <span class="vcard"><a class="email" href="mailto:werner@almesberger.net" title="Werner Almesberger <werner@almesberger.net>"> <span class="fn">Werner Almesberger</span></a>
</span></b>
<pre>An update: attempts to set FORCE_FALLBACK or disable ACCEL_* in
src/sna/sna_accel.c only produced minor improvements without solving the
problem.
Increasing the damage region to cover the whole drawable in sna_mode_redisplay
seems to have no effect.
The best work-around so far is setting Option "AccelMethod" "none" in
xorg.conf. This restores correct operation, but - expectedly - at the price of
limited video rendering (e.g., mplayer can go full-screen with -vo gl but not
xv), slow 3D, and possibly more issue I haven't spotted yet.</pre>
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