display becomes unresponsive and keyboard input fails

Submitted by tla2k20@gmail.com

Assigned to Nouveau Project

Link to original bug (#108857)

Description

Created attachment 142607
dmesg

Fedora release 29 (Twenty Nine)
Linux s0.home 4.19.3-300.fc29.x86_64 #1 SMP Wed Nov 21 15:27:25 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

System boots and is initially OK for a few minutes then becomes unresponsive to mouse movements and keyboard input. Access via a SSH session is fine.

Issue started around 3 kernel updates ago (4.19.*).

top shows the following when the problem is in progress:

top - 12:10:25 up 1:10, 2 users, load average: 0.23, 0.25, 0.27
Tasks: 356 total, 2 running, 354 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.8 us, 6.6 sy, 0.0 ni, 91.6 id, 0.0 wa, 1.0 hi, 0.0 si, 0.0 st
MiB Mem : 15982.9 total, 9198.9 free, 4552.3 used, 2231.7 buff/cache
MiB Swap: 8008.0 total, 8008.0 free, 0.0 used. 11035.1 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7144 root 20 0 0 0 0 R 53.8 0.0 0:02.26 kworker/u16:0+events_unbound
2325 user1 20 0 3867708 195040 118048 S 2.0 1.2 0:28.43 gnome-shell

kworker/u16:2+events_unbound seems to eat CPU and dmesg reports:

nouveau 0000:01:00.0: DRM: base-0: timeout

Attachment 142607, "dmesg":
dmesg.log