[Nouveau] [Bug 90453] [NVE4] Desktop freezes & PDISP errors & PFIFO errors

[bugzilla-daemon at freedesktop.org]

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

--- Comment #13 from Michiel Helvensteijn <mhelvens at gmail.com> ---
During the freeze-up just now, dmesg gave me this beauty:

[ 9126.410442] nouveau E[  PGRAPH][0000:01:00.0] TRAP ch 8 [0x007f2f2000
gnome-shell[1419]]
[ 9126.410451] nouveau E[  PGRAPH][0000:01:00.0] GPC1/PROP trap: (unknown enum
0x00000002)
[ 9126.410454] nouveau E[  PGRAPH][0000:01:00.0] x = 4560, y = 160, format = 0,
storage type = 0
[ 9126.410461] nouveau E[  PGRAPH][0000:01:00.0] GPC2/PROP trap: (unknown enum
0x00000002)
[ 9126.410462] nouveau E[  PGRAPH][0000:01:00.0] x = 4576, y = 152, format = 0,
storage type = 0
[ 9130.744302] nouveau E[   PFIFO][0000:01:00.0] SCHED_ERROR [ CTXSW_TIMEOUT ]
[ 9130.744306] nouveau E[   PFIFO][0000:01:00.0] PGRAPH engine fault on channel
9, recovering...
[ 9145.526131] Peer 84.104.35.99:51165/34567 unexpectedly shrunk window
2380020382:2380048967 (repaired)
[ 9146.092788] Peer 84.104.35.99:51165/34567 unexpectedly shrunk window
2380020382:2380048967 (repaired)
[ 9147.229435] Peer 84.104.35.99:51165/34567 unexpectedly shrunk window
2380020382:2380048967 (repaired)
[ 9164.935810] Peer 84.104.35.99:51165/34567 unexpectedly shrunk window
2380247127:2380249895 (repaired)
[ 9165.382470] Peer 84.104.35.99:51165/34567 unexpectedly shrunk window
2380247127:2380249895 (repaired)
[ 9172.099024] nouveau E[systemd-logind[431]] failed to idle channel 0xcccc0000
[systemd-logind[431]]
[ 9187.098777] nouveau E[systemd-logind[431]] failed to idle channel 0xcccc0000
[systemd-logind[431]]
[ 9187.098878] nouveau E[   PFIFO][0000:01:00.0] read fault at 0x0000023000
[PTE] from PBDMA0/HOST_CPU on channel 0x007f541000 [unknown]
[ 9202.351857] nouveau E[gnome-shell[1419]] failed to idle channel 0xcccc0000
[gnome-shell[1419]]
[ 9217.351609] nouveau E[gnome-shell[1419]] failed to idle channel 0xcccc0000
[gnome-shell[1419]]
[ 9232.351361] nouveau E[chromium[2607]] failed to idle channel 0xcccc0000
[chromium[2607]]
[ 9247.351111] nouveau E[chromium[2607]] failed to idle channel 0xcccc0000
[chromium[2607]]

In case it makes a difference, this is after I tried installing the binary
nvidia drivers again, failing, and going back to nouveau. This is also with all
the latest gtk / gnome versions installed again (so the above errors follow the
long string of PDISP errors in the dmesg output).

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