This bug was fixed in the package compiz -
1:0.9.11.3+14.04.20150313-0ubuntu1
---------------
compiz (1:0.9.11.3+14.04.20150313-0ubuntu1) trusty; urgency=medium
[ Andrea Azzarone ]
* removed texture caching from animations (LP: #729979, #1072206)
[ Chris Townsend ]
* Add a blacklist of Nvidia integrated GPU's affected by the Nvidia
X11 Sync patch. (LP: #1424013)
-- CI Train Bot <ci-train-...@canonical.com> Fri, 13 Mar 2015 17:25:30 +0000
** Changed in: compiz (Ubuntu Trusty)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1072206
Title:
[nvidia] Window content is black or transparent
Status in Compiz:
Fix Committed
Status in Compiz 0.9.11 series:
In Progress
Status in NVIDIA Drivers Ubuntu:
Invalid
Status in Unity:
Invalid
Status in compiz package in Ubuntu:
Fix Released
Status in unity package in Ubuntu:
Invalid
Status in compiz source package in Trusty:
Fix Released
Bug description:
[ Impact ]
With nVidia hardware from time to time window content is rendered
black or transparent. The problem manifests more frequently as
session uptime increases.
Apparently the problem was caused by textures being cached and not
freed, resulting in memory exhaustion conditions. It turns out the
texture caching is unnecessary anyway.
[ Test Case ]
Verification requires an nVidia GPU with proprietary drivers. The
problem can not be reproduced at will, only after some time (depending
on resident GPU memory and usage) and even then only randomly and
unreliably.
[ Regression Potential ]
It is unlikely this change has the potential to introduce new
regressions.
[ Other Info ]
Fix was cherry-picked from the Ubuntu "Vivid Vervet" dev relase where
it has been in use for some weeks without problem.
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