I don't know if this is hardware, OS, or X.
I have been running Mint 20.2 on a Dell XPS 15 laptop for a few years
and it's been fine. It's set to Suspend when the lid gets closed (both
on power and on battery) and that's exactly what it was doing. Lifting
the lid brought back the lock screen where I could give my password to
continue.
Suddenly, about 4 months ago, lifting the lid brought back the screen I
was working on, all windows visible, for about 1½–2 seconds, then it
blanked and the power button flashed briefly, exactly like a shutdown.
But pressing the power button brought back the lock screen, and I could
give my password and continue OK.
It was unexpected, but it didn't worry me unduly, even less when after
about a month it went back to behaving as it ought.
Now it has started doing it again (about 2 weeks ago). There have of
course been periodic apt upgrades, and of course I didn't note the dates
because the change in behaviour wasn't a problem.
Has anyone else had this happen?
P
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