System crash on power saving

What type of suspend is in use? Check with:

cat /sys/power/mem_sleep

Someone else recently started having issues with their device resuming from suspend–maybe a kernel bug, who knows?–and their issue was resolved by switching from suspend-to-disk to suspend-to-RAM.

See the solution here:

Most of the drawbacks of using this method are related to laptop use (suspend-to-RAM continues to draw power while suspended, which can slowly drain a laptop battery). Considering you have a desktop machine, this may be a good solution for you.

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