[Bug 92077] nouveau graphics freeze when using KDE Plasma 5; PGR engine fault

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=92077

--- Comment #4 from zoominee <gentoo-5cK0ikVjkE4@public.gmane.org> ---
I generated a new apitrace without too much private content. It was about 155
MB, so I zipped it down to 77 MB. Because I couldn't attach that to this
report, I uploaded it to a free service, here's the link. Maybe it works.
http://www.uploadmb.com/dw.php?id=1442982871

The apitrace was generated with the versions mentioned in the bug's
Description.

I noticed that there is a newer mesa, so I will test (later) whether the
apitrace still results in the graphics freeze.

The dmesg output related to this graphics freeze captured in the new trace is
the following:

Sep 22 23:49:39 localhost kernel: nouveau E[   PFIFO][0000:02:00.0] read fault
at 0x000310e000 [PTE] from GR/GPC0/T1_1 on channel 0x003facd000
[plasmashell[2933]]                                                             
Sep 22 23:49:39 localhost kernel: nouveau E[   PFIFO][0000:02:00.0] PGR engine
fault on channel 5, recovering...
Sep 22 23:49:39 localhost kernel: nouveau E[     PGR][0000:02:00.0] TRAP ch 5
[0x003facd000 plasmashell[2933]]
Sep 22 23:49:39 localhost kernel: nouveau E[     PGR][0000:02:00.0]
GPC0/TPC0/TEX: 0x80000049
Sep 22 23:49:39 localhost kernel: nouveau E[     PGR][0000:02:00.0]
GPC0/TPC1/TEX: 0x80000049

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