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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - KWin crash in brw_workaround_depthstencil_alignment on Haswell"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77402#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - KWin crash in brw_workaround_depthstencil_alignment on Haswell"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77402">bug 77402</a>
from <span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
</span></b>
<pre>Huh, I've never seen this failure mode. But it sounds entirely plausible.
The X server's GLX code has a bug where it may randomly return a bogus
visual/fbconfig; perhaps it ended up not having stencil, and we crashed?
That bug is fixed in X server git, and the upcoming 1.15.1 and 1.14.6 releases
(due any day now). Alternatively, you could try asking KWin to use EGL:
KWIN_OPENGL_INTERFACE=egl kwin --replace &
Does either of those fix this issue for you?</pre>
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