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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54226#c101">Comment # 101</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54226">bug 54226</a>
from <span class="vcard"><a class="email" href="mailto:januszmk6@gazeta.pl" title="Janusz <januszmk6@gazeta.pl>"> <span class="fn">Janusz</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=54226#c100">comment #100</a>)
<span class="quote">> I have, I think, a reliable way to trigger this behavior, if that helps. It
> requires a non-trivial setup, though.
>
> I have gnome-shell running on dual monitors. The first is 1920x1200, the
> second is 1920x1080 (not sure if the resolution difference matters). If I
> run a full-screen game on The 1920x1200 monitor, I get freezes, and notes in
> the dmesg about hangcheck timers and kickrings ("stuck wait on blitter
> ring").
>
> I believe OpenGL acceleration of the desktop is important, because the
> freezes are not triggered in fluxbox, for instance. I'm not sure if the game
> itself needs to be using OpenGL, or if the full-screen window is the
> triggering factor, or something else entirely. It is important that the game
> keep the monitors distinct, and only go full screen on one. I just tried it
> on Battle for Wesnoth, and full screen there sets the monitors to mirror,
> which doesn't trigger the problem.
>
> This is on an i7 4770, if that matters.
>
> I realize this is may be difficult to put together for a test setup, but I
> thought I'd mention it.</span >
I also have dual monitors and also gnome-shell, but I have on both 1920x1080px.
I notice that when I am watching some videos on full screen on one monitor,
this is happening more often (on non full-screen work, it's still happening)</pre>
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