I have been running nvidia 440.100 since ~6 Jul 2020 with no issues. This week an issue started where the display hangs completely, mouse does not move, and no elements update.
top shows nv_queue running at 100% before or just after display freeze.
While in the problem state, the system runs normal for about ~30-40 secs, the freeze occurs ~10 secs, unfreezes for 1 sec or 2, freeze for another 10 secs, and cycle repeats.
On 11 Aug 2020, I upgraded to 450.57, and have had the problem happen again twice. The long freeze has reduced to ~8 secs instead of 10 while in the problem state. I logged out to start a new X session, but the nvidia X session is still active and will not exit.
reboot does not work and I have to power off and reboot to login again.
Once on 440.100 and once on 450.57 the problem stopped occurring on its own.
I suspect some user operation is causing an issue in the driver.
I will try to associate a specific action with the start of the issue.
Reviewing the logs I did not find an NVRM messages from the time of the issue, or any other time. The only kernel messages are from the mouse complaining about lost mouse events during the issue.
In an attempt to capture more information, I will stop gdm and use startx to capture more logs.
Attached is the nvidia report.
nvidia-bug-report.log.gz (1.8 MB)