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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - display turns off with intel(0): sna_mode_redisplay: page flipping failed, disabling CRTC:3 (pipe=0)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70905#c37">Comment # 37</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - display turns off with intel(0): sna_mode_redisplay: page flipping failed, disabling CRTC:3 (pipe=0)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70905">bug 70905</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=70905#c36">comment #36</a>)
<span class="quote">> Chris,
>
> I put some log files here:
>
> <a href="http://data.boulder.swri.edu/~joe/">http://data.boulder.swri.edu/~joe/</a>
>
> Xorg.0.log and Xorg.0.log3 both happened with TearFree on using the Spotify
> search test. I fear not much of use is in these, but please look (I looked
> at the tail of each).</span >
You underestimate the value of your debugging - it was very, very useful. Thank
you.
commit 4b73a0ea22b43807c0118f4d7e9dcac3f0626463
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Wed Jan 29 05:32:25 2014 +0000
sna: Skip undamaged TearFree redisplays
If we have not had cause to flush the wait_for_shadow buffer during the
course of the rendering, then we never wrote to the backbuffer and its
contents are still identical to the current frontbuffer. So if the
wait_for_shadow is still flagged as required on the scanout, we know we
can safely discard the redisplay request.
References: <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - display turns off with intel(0): sna_mode_redisplay: page flipping failed, disabling CRTC:3 (pipe=0)"
href="show_bug.cgi?id=70905">https://bugs.freedesktop.org/show_bug.cgi?id=70905</a>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Time to try again!
<span class="quote">> Xorg.0.log2 happened with TearFree off just going into Chromium - unusual.</span >
Another assertion - not sure which, at a guess it decided the pointer was
incoherent, which looks more like a bogus assertion...</pre>
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