My laptop PC crashes when I use an HDMI external 4k monitor at full resolution with 200% zoom.
This is a repeatable behaviour. I’m using Ubuntu. The problem occurs with different versions of the driver and different Ubuntu versions.
I’ve been using at least 390, 435, 440.64, 440.82 under 19.10. 440.64 downloaded from ppa. Latest 440.82 downloaded from nvidia site.
I’m currently using stock repository driver under Ubuntu 20.04 LTS, 440.64 if I’m correct.
If I halve the resolution in both X and Y to 1920x1080 and set zoom to 100%, I have a quite more stable PC.
I have reported a bug to Ubuntu, but it seems that the bug reporting tool fails to send the needed information.
I try sending information using nvidia tool if it may help. The file is gzipped.nvidia-bug-report.log (425.0 KB)
I’m open to advices/tweakings to get the system working.