kernel and syslogs are filled by "nouveau 0000:01:00.0: fifo: SCHED_ERROR 20"

[I. T. Pohjalainen]

After waking from suspend kern and syslog are filled following:

Aug 2 12:35:20 mycomp kernel: [ 4224.589205] nouveau 0000:01:00.0: fifo: SCHED_ERROR 20 []
Aug 2 12:35:20 mycomp kernel: [ 4224.589216] nouveau 0000:01:00.0: fifo: SCHED_ERROR 20 []
Aug 2 12:35:20 mycomp kernel: [ 4224.589228] nouveau 0000:01:00.0: fifo: SCHED_ERROR 20 []

Fills up root rapidly within minutes and therefore freezes the system and systemd-journald runs with CPU 100%. If root is filled completely, the computer is unbootable and can only be recovered through rescue mode.

installed package:
xserver-xorg-video-nouveau/bionic,now 1:1.0.15-2 amd64

Laptop: Asus ZenBook UX303UB

lsb_release -rd:
Description: Ubuntu 18.04.1 LTS
Release: 18.04

uname -a:
Linux mycomp 4.15.0-29-generic #31-Ubuntu SMP Tue Jul 17 15:39:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Someone else have reported the same bug here: https://wyldeplayground.net/kern-and-syslog-full-with-the-same-error-jul-15-110756-asimsafwan-kernel/

Probably related bug: https://bugzilla.redhat.com/show_bug.cgi?id=1560389

[Launchpad Janitor (janitor)]

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

[Jozsef Ottucsak (fuzboxz)]

Also affects me. Happens after I wake up the machine from suspended state. Ubuntu Mate 18.04.1, Asus UX303UB, 4.15.0-34 kernel.

[Jozsef Ottucsak (fuzboxz)]

As a temporary workaround: removing the proprietary nvidia drivers (nvidia-driver-390) fixed the issue for me.