My machine locks up several times a week. From /var/log/messages I see:
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00040060
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00140010
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 2001a020
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data ff636880
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00000002
...
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: Xorg[1248]: failed to idle channel 2 [Xorg[1248]]
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00040060
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data beef0201
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00140010
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00000000
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 2001a020
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data ff636881
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00000002
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00000000
Apr 25 16:49:06 jschmitt-dt kernel: nouveau 0000:02:00.0: Xorg[1248]: failed to idle channel 2 [Xorg[1248]]
Sometimes I can still ssh to the machine, other times I cannot. When I can ssh to the machine, I can sometimes use this to bring back the machine to a working state:
$ systemctl isolate rescue.target
and then
$ systemctl isolate graphical.target
The only other option I have is to physically reset the machine.
$ cat /etc/redhat-release
Fedora release 22 (Twenty Two)
$ uname -a
Linux jschmitt-dt 4.4.6-201.fc22.x86_64 #1 SMP Wed Mar 30 18:30:16 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
My machine locks up several times a week. From /var/log/messages I see:
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00040060
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00140010
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 2001a020
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data ff636880
Apr 25 16:48:36 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00000002
...
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: Xorg[1248]: failed to idle channel 2 [Xorg[1248]]
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00040060
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data beef0201
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00140010
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00000000
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 2001a020
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data ff636881
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00000002
Apr 25 16:48:51 jschmitt-dt kernel: nouveau 0000:02:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[1248]] subc 0 mthd 0000 data 00000000
Apr 25 16:49:06 jschmitt-dt kernel: nouveau 0000:02:00.0: Xorg[1248]: failed to idle channel 2 [Xorg[1248]]
Sometimes I can still ssh to the machine, other times I cannot. When I can ssh to the machine, I can sometimes use this to bring back the machine to a working state:
$ systemctl isolate rescue.target
and then
$ systemctl isolate graphical.target
The only other option I have is to physically reset the machine.
$ cat /etc/redhat-release fc22.x86_ 64 #1 SMP Wed Mar 30 18:30:16 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Fedora release 22 (Twenty Two)
$ uname -a
Linux jschmitt-dt 4.4.6-201.
xorg-x11- drv-nouveau- 1.0.11- 2.fc22. x86_64 drv-nouveau- debuginfo- 1.0.11- 2.fc22. x86_64
xorg-x11-