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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [awesomenauts][radeonsi] pageflip is clearly missing vblank with vsync on"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79850#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [awesomenauts][radeonsi] pageflip is clearly missing vblank with vsync on"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79850">bug 79850</a>
from <span class="vcard"><a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> <span class="fn">Michel Dänzer</span></a>
</span></b>
<pre>First of all, if you are using a compositing manager, make sure it unredirects
fullscreen windows. Also make sure vblank_mode isn't set to 0 in ~/.drirc or
/etc/drirc or as an environment variable.
With that ruled out, we'll need to work backwards why the driver can't use page
flipping. The final decision on that happens in the X driver's can_flip
function in radeon_dri2.c. From a remote shell, attach gdb to the X server
process and set a breakpoint on that function. If it gets called, check which
of its conditions are not met.</pre>
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