[Nouveau] [Bug 90453] [NVE4] Desktop freezes & PDISP, PFIFO, PGRAPH and PGR errors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90453

--- Comment #22 from Argyris Megalios <argymeg at gmail.com> ---
I originally added my problem to bug 89912, as my original error message was
not seen here.

kernel: nouveau E[   PFIFO][0000:01:00.0] write fault at 0x00002a0000 [PTE]
from GR/GPC0/PROP_0 on channel 0x007f96c000 [Xorg[383]]
kernel: nouveau E[   PFIFO][0000:01:00.0] PGR engine fault on channel 2,
recovering...

However, after also getting the following:
kernel: nouveau E[   PFIFO][0000:01:00.0] SCHED_ERROR [ CTXSW_TIMEOUT ]
kernel: nouveau E[   PFIFO][0000:01:00.0] PGR engine fault on channel 10,
recovering...

I am inclined to thing the bugs are duplicates.
Now, while playing a game (which actually played fine yesterday) I have had two
consecutive freezes with the message:

kernel: nouveau E[     DRM] GPU lockup - switching to software fbcon

I, too, will be switching to the nvidia driver for the moment, however I will
be happy to assist with any fix tests.

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