Debugging hard freezes
I am using Bazzite 43 with a Nvidia GTX 1650 graphics card. At least twice now, I have had a total system freeze without warning. I had some web browser windows runing, YouTube music playing, and a terminal text editor open along with Discord.
I kept System Monitor open because of the last time this happened, to make sure I was not running out of RAM. With 16GB total, System Monitor showed only about 50% used today when the freeze happened.
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Both monitors showed a frozen image. The keyboard (caps lock, ctrl-alt-f3 etc.) did not work. The mouse did not work.
I tried a bunch of SysRq commands, but nothing worked as well.
I -thought- I had enabled those commands, but it is possible that a previous crash reset my SysRq settings. I'm currently trying to determine how to manually enable SysRq on Bazzite.
I've written 511 to /proc/sys/kernel/sysrq this time, to try next time.
Are there any other suggestions for identifying the cause of a hard freeze with nothing in the ujust / journalctl logs?
The only thing I can think of is running a RAM test.
I turned mprime down to 10GB used, ran about 50 minutes, no problems. Highest core temp I saw was 62 C (
sensors reports the "high" temperature would be 85, and crit would be 105).