I have found that adding nouveau.noaccel=1 to the Kernel command line in
/etc/default/grub has solved the lockups. You may want to try.
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I have found that adding nouveau.noaccel=1 to the Kernel command line in
/etc/default/grub has solved the lockups. You may want to try.
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This bug appears with several variations on a theme on several sites.
The most common workaround of adding nouveau.nofbaccel=1 to
/etc/default/grub as a kernel command line didn't work for me.
However
nouveau.noaccel=1
Has resulted in a stable PC for the last 24 hours which is a 3 year
record!
nouveau.noaccel=1 does seem to be the workaround for lockup bugs in
nouveau with Nvidia graphics cards. 24 hours stable.
As this is a regular repeatable issue on my setup, if any developer
would like more detailed logging please ask.
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Another crash
Mar 23 12:37:11 A55M-S2HP kernel: [ 3989.739350] nouveau :04:00.0:
fifo: CACHE_ERROR - ch 4 [compiz[1821]] subc 0 mthd 0060 data 800f
Mar 23 12:38:07 A55M-S2HP kernel: [ 4045.782081] nouveau :04:00.0:
fifo: CACHE_ERROR - ch 4 [compiz[1821]] subc 0 mthd 0060 data
Sorry to add to my own post.
My Kernel has had boot param set to nouveau.nofbaccel=1
Based on 711434 I am adding nouveau.noaccel=1
Will report back in 24 hours.
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Public bug reported:
Regular lockups under graphics load.
Existed since 2013 under previous versions of Ubuntu.
Tends to happen when page scrolling or moving quickly through a browser page.
Graphics load related?
Several previous bugs of a similar nature either considered invalid or
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