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Message #112566
[Bug 1424013] Re: Compiz high CPU and UI freeze on NVIDIA after fix for #269904 in trusty-updates
@Justin,
1. Did you reboot or at least restart Compiz when you applied the update?
2. If so, could you please provide the output from the instructions in comment #10?
Thanks!
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https://bugs.launchpad.net/bugs/1424013
Title:
Compiz high CPU and UI freeze on NVIDIA after fix for #269904 in
trusty-updates
Status in Compiz:
Fix Committed
Status in Compiz 0.9.11 series:
In Progress
Status in compiz package in Ubuntu:
Fix Released
Status in compiz source package in Trusty:
Fix Committed
Bug description:
[ Impact ]
Immediately after the fix for #269904 landed in trusty-updates via
compiz 1:0.9.11.3+14.04.20150122-0ubuntu1, my 14.04 machine with an
NVIDIA card and using the nvidia-304 driver became unusable -- symtoms
include compiz process high CPU (100%), UI freeze right after logging
in (machine still up, reachable via SSH from the network), and a flood
of these messages on the system log.
[ Test Case ]
Requires a GeForce 6150SE or similar integrated GPU from nVidia.
Problem manifests immediately on login.
[ Regression Potential ]
The fix involves a specific hardware blacklist. Anticipated
regressions include fixed support for the specific hard in future
nVidia driver releases and potentially additional unidentified
hardware affected by this bug needing to be added to the blacklist.
Note that there is a manual workaround to the problem consisting of
disabling the X11 Sync feature through CCSM.
[ Other Info ]
This fix was cherry-picked from the Ubuntu "Vivid Vervet" development
release where it has been in regular use for some weeks.
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References