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[NVE6] complete system freeze, PGRAPH engine fault on channel 2, SCHED_ERROR [ CTXSW_TIMEOUT ]

Submitted by Matthias Nagel

Assigned to Nouveau Project

Link to original bug (#93629)

Description

Created attachment 120860
dmesg output after crash

The system randomly freezes. I can still move the mouse but can't do anything else. I cannot switch VT, the three-finger salute does not work and system shut down via ACPI does not work either. The only way of recovery is a hard switch off.

The crash seems to occur more frequently, if I play videos (mplayer or Flash), but this is not a requirement.

The crash does not occur, if I use the blob firmware (nouveau.config="NvGrUseFw=1").

Graphic card: "ASUS GeForce GTX 660 PCI 3.0 2GB DDR5"

uname: "Linux 4.1.12-gentoo #2 SMP Wed Dec 23 19:28:09 CET 2015 x86_64 Intel(R) Xeon(R) CPU E3-1230 v3 @ 3.30GHz GenuineIntel GNU/Linux"

Beginning of dmesg:

Jan 06 16:04:24 matthias-pc kernel: nouveau E[ PFIFO][0000:01:00.0] SCHED_ERROR [ CTXSW_TIMEOUT ]
Jan 06 16:04:24 matthias-pc kernel: nouveau E[ PFIFO][0000:01:00.0] PGRAPH engine fault on channel 2, recovering...
Jan 06 16:04:31 matthias-pc kernel: nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 5 [0x023f926000 kwin[606]]
Jan 06 16:04:31 matthias-pc kernel: nouveau E[ PGRAPH][0000:01:00.0] ROP0 0x80000000 0x80000001
Jan 06 16:04:31 matthias-pc kernel: nouveau E[ PGRAPH][0000:01:00.0] ROP1 0x80000000 0x80000001
Jan 06 16:04:31 matthias-pc kernel: nouveau E[ PGRAPH][0000:01:00.0] ROP2 0x80000000 0x80000001

For a complete log and more system information see the attached files.

Attachment 120860, "dmesg output after crash":
dmesg-crash-with-freeze.txt

Blocking

See also