Comment 2 for bug 1767614

I am also experiencing random system freezes with nvidia-390. Sometimes after just a few minutes, other times after hours of operation.

The graphics will start freezing for a few seconds at first. Keyboard and Mouse input starts lagging too. If I don't restart immediately at that point the freezes will continue to become longer and happen in shorter intervals until the GUI doesn't respond at all. If that happens I am also unable to switch to any tty and have to hard reset.
The system keeps running underneath though as audio calls continued working despite full graphics freeze.

This only happens with nvidia-390. I am unable to test nvidia-396 and above as support for Fermi was dropped.

The only thing noticeable are some NVRM messages in the syslog:

[ 3.629809] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 390.77 Tue Jul 10 18:28:52 PDT 2018 (using threaded interrupts)
[ 47.315063] NVRM: GPU at PCI:0000:01:00: GPU-58038d8c-f108-4415-84ad-1b98a60c3344
[ 47.315089] NVRM: Xid (PCI:0000:01:00): 16, Head 00000001 Count 000009f8
[ 55.564951] NVRM: Xid (PCI:0000:01:00): 16, Head 00000001 Count 000009f9
[ 63.776270] NVRM: Xid (PCI:0000:01:00): 16, Head 00000001 Count 000009fa

These messages also appear randomly on screen when switching to a tty. Interestingly the messages are gone when I boot into recovery mode and then select 'resume normal boot'