[Nouveau] [Bug 100567] Nouveau system freeze fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100567

--- Comment #36 from Harry Coin <hgcoin at gmail.com> ---
And here's another hard lock from this morning.  Much shorter syslog trace

$ uname -a
Linux ceo1homenx 5.2.0-8-generic #9-Ubuntu SMP Mon Jul 8 13:07:27 UTC 2019
x86_64 x86_64 x86_64 GNU/Linux

Jul 21 09:39:02 ceo1homenx systemd[1]: phpsessionclean.service: Succeeded.
Jul 21 09:39:02 ceo1homenx systemd[1]: Started Clean php session files.
Jul 21 09:45:02 ceo1homenx CRON[27199]: (root) CMD (command -v debian-sa1 >
/dev/null && debian-sa1 1 1)
Jul 21 09:45:20 ceo1homenx kernel: [89849.919490] nouveau 0000:01:00.0: fifo:
SCHED_ERROR 0a [CTXSW_TIMEOUT]
Jul 21 09:45:20 ceo1homenx kernel: [89849.919500] nouveau 0000:01:00.0: fifo:
runlist 0: scheduled for recovery
Jul 21 09:45:20 ceo1homenx kernel: [89849.919506] nouveau 0000:01:00.0: fifo:
channel 8: killed
Jul 21 09:45:20 ceo1homenx kernel: [89849.919511] nouveau 0000:01:00.0: fifo:
engine 0: scheduled for recovery
Jul 21 09:45:20 ceo1homenx kernel: [89849.919815] nouveau 0000:01:00.0:
Xorg[1546]: channel 8 killed!

-- hard lock -- No numlock/capslock,  system power button ineffective only
power-cycle works to restore operations.

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