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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - glmark2-es2-wayland shortly freezes on some frames with egl_dri2 backend (Nouveau/GK20A)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86690#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - glmark2-es2-wayland shortly freezes on some frames with egl_dri2 backend (Nouveau/GK20A)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86690">bug 86690</a>
from <span class="vcard"><a class="email" href="mailto:gnurou@gmail.com" title="Alexandre Courbot <gnurou@gmail.com>"> <span class="fn">Alexandre Courbot</span></a>
</span></b>
<pre>I have tried reverting the following patches as suggested on
<a href="http://lists.freedesktop.org/archives/dri-devel/2014-November/072367.html">http://lists.freedesktop.org/archives/dri-devel/2014-November/072367.html</a>:
809e9447: "drm/nouveau: use shared fences for readable objects"
055dffdf: "drm/nouveau: bump driver patchlevel to 1.2.1"
e3be4c23: "drm/nouveau: specify if interruptible wait is desired in
nouveau_fence_sync"
15a996bb: "drm/nouveau: assign fence_chan->name correctly"
Doing so helped with another (unrelated) issue I was having, but sadly did not
change anything to this problem or its symptoms. Looks like we are dealing with
something completely different, even though somehow fence-related.
Also FWIW, running weston-simple-egl with the -b option (eglSwapInterval 0)
leads to the same behavior as glmark2.
I will keep investigating where/why the fences are blocking.</pre>
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