A fix for bug 1388490 now exists, so if this one becomes reproducible
then it might be fixed too.
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https://bugs.launchpad.net/bugs/1377872
Title:
Double-buffered compositing
Hmm it seems this bug refuses to expire.
Can't be reproduced any more and only happens using a rendering approach
we have never used.
** No longer affects: mesa
** Changed in: mir
Status: Incomplete => New
** Changed in: mir
Status: New => Incomplete
** Changed in: mir
Two years later... Upstream has now offered some thoughts. Although I
don't think this bug is around any more(?)
https://bugs.freedesktop.org/show_bug.cgi?id=86366
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** Changed in: mir
Assignee: Daniel van Vugt (vanvugt) => (unassigned)
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https://bugs.launchpad.net/bugs/1377872
Title:
Double-buffered compositing performance is sometimes very
This might help:
http://lists.freedesktop.org/archives/intel-gfx/2015-April/063988.html
Although this bug seems to be gone since the end of 2014... hopefully.
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Incomplete. It appears we're both experiencing just bug 1447896 now. Bug
1377872 hasn't definitely been seen since late-2014.
** Changed in: mir
Status: Confirmed = Incomplete
** Changed in: mesa (Ubuntu)
Status: Confirmed = Incomplete
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Just for clarity's sake, INTEL_DEBUG=sync doesn't seem to make any
difference, but nbuffers=3 seems to avert the problem
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https://bugs.launchpad.net/bugs/1377872
Title:
Double-buffered
Sounds like kdub is experiencing bug 1447896 more than this one too.
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Title:
Double-buffered compositing performance is sometimes very poor (30
I see the same symptoms on my intel system. The easiest way to reproduce
the systems for me is to have a host (in bypass mode, with nbuffers=2),
a nested server (with nbuffers = 2 or nbuffers = 3), and then run
eglplasma connected to the nested server.
If egltriangle is running, the host server
Scratch that. What I found yesterday seems to be a different bug. Logged
in -- bug 1447896
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Title:
Double-buffered compositing performance is
Good-bad news!
I can reproduce this bug again today, after updating my vivid desktop
for the first time in two weeks. Seems some kernel/Mesa change has made
it re-appear. And the INTEL_DEBUG workaround no longer works. But
--nbuffers=3 does.
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