[Expired for xorg (Ubuntu) because there has been no activity for 60
days.]
** Changed in: xorg (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1578715
Title:
Blank screen after computer locks for long time
Status in xorg package in Ubuntu:
Expired
Bug description:
After my computer is locked for a long time, I am unable to get back
to the unlock screen, nor can I get to the virtual terminals. I
suspect this is an issue with nouveau, as kern.log has the lines:
May 4 20:06:15 paul-OptiPlex-9020-citp kernel: [32188.115554] nouveau
0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
May 4 20:06:15 paul-OptiPlex-9020-citp kernel: [32188.115559] nouveau
0000:01:00.0: fifo: sw engine fault on channel 2, recovering...
May 4 20:06:17 paul-OptiPlex-9020-citp kernel: [32190.115160] nouveau
0000:01:00.0: fifo: runlist 0 update timeout
May 4 20:06:19 paul-OptiPlex-9020-citp kernel: [32192.410337] nouveau
0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
May 4 20:06:23 paul-OptiPlex-9020-citp kernel: [32196.705111] nouveau
0000:01:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
with the last line repeated many times.
Bugs I found with similar error messages:
https://bugs.freedesktop.org/show_bug.cgi?id=90453
https://bugs.freedesktop.org/show_bug.cgi?id=72180
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