On 2025-02-20 17:45, Go Canes wrote:

(stuff nuked)


If the laptop is idle it locks up after ~25 minutes.  "Idle" can mean
no one logged-in, or a user logged-in but not doing anything.  If the
user is doing something, it does not lock-up.  "Something" can be
running a Windows 10 VM, a ssh session running "top", etc.  To recover
the system I have to do a hard-reset using the power switch.

I feel your pain :-)

Some 20 years ago I ran a Beowulf cluster of some 30 nodes with 6-core Athlon CPU in each. One of the nodes would simply stop intermittently and the only way out was HW reset. Once a week to once a month.

We replaced RAM, PSU, disk and Mo-Bo. Nothing helped. There was nothing else to replace. Then I discovered that the node only stopped when it was IDLE. So I installed the BOINC client and let it run on a single core with Nice=19. Problem solved. To this day I do not know what was causing it.

Good luck.  There are still too many things between the Heaven and the Earth.

Frank


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