Crashes in nouveau CACHE_ERROR

[bmarsh]

Have been running Kubuntu 13.10 beta2 for 1 day now and have had 3 similar crashes that totally hang the machine.

Oct 12 07:00:03 linux1 kernel: [50255.577404] nouveau E[ PFIFO][0000:01:00.0] CACHE_ERROR - ch 4 [kwin[2218]] subc 3 mthd 0x1b00 data 0x00000000
Oct 12 07:01:20 linux1 kernel: [50333.062989] nouveau E[Xorg[1486]] failed to idle channel 0xcccc0000 [Xorg[1486]]

Have not had any previous problems running 13.04.

Machine is an AMD64

Description: Ubuntu Saucy Salamander (development branch)
Release: 13.10

Was not doing anything special, and in fact one crash happened while the machine was idle overnight.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Malek Ghantous (malektronic)]

Could this be related to this bug?

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1037726

[Alberto (aldelbal)]

I have similar problem with 14.02 LTS

kernel: [ 3222.252076] nouveau E[ PFIFO][0000:01:00.0] CACHE_ERROR - ch 3 [Xorg[1464]] subc 0 mthd 0x0320 data 0x00000014

[phil (philster)]

i have a similar problem on Xubuntu 15.04

[ 6567.678596] nouveau E[ PFIFO][0000:01:00.0] CACHE_ERROR - ch 4 [chromium-browse[4704]] subc 3 mthd 0x1b00 data 0x00000000

[Rafael Jesus Alcantara Perez (rafa-dedaloingenieros)]

I'm having the same output on Kubuntu 16.04:

[34291.335790] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 6 [kwin_x11[1810]] subc 0 mthd 0060 data beef0201
[34293.221014] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 9 [chromium-browse[2539]] subc 5 mthd 0200 data 00000001
[34498.313347] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 9 [chromium-browse[2539]] subc 3 mthd 12d4 data 00001d01
[34519.820624] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 6 [kwin_x11[1810]] subc 0 mthd 0060 data beef0201
[34616.745428] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 6 [kwin_x11[1810]] subc 3 mthd 1b00 data 00000000

[penalvch (penalvch)]

bmarsh, thank you for reporting this and helping make Ubuntu better.

As per https://wiki.ubuntu.com/Releases 13.10 is EOL.

If you have an issue in a supported release (ex. 16.04) please file a new report, and feel free to subscribe me to it.