Kenneth Parker wrote:
> HP Elitedesk 705 G1. Bullseye XFCE.
>
> I had a timeout set like usual. Before, I could jiggle the Mouse and press
> the Shift Key and it would wake up, but not today.
>
> Fortunately, I was able to power up a Laptop, and SSH into the Elitedesk,
> and tell it to Shutdown cleanly. (But, obviously not everyone has this
> option).
>
> (Until I can figure this out, I changed the Power settings to "Never" turn
> off the Monitor).
>
This is the sort of thing which is often caused by a machine
being told to go to sleep -- i.e. suspend to ram, suspend to
disk -- in some way which doesn't let it wake up the video card
again.
A simple DPMS power off / power on ought to work -- from X, try
xset +dpms
xset dpms suspend
The xset command (version 1.2.4) gave "xset: unknown option suspend".
and wait a moment. It should come back when you tap a key,
possibly if you wiggle a mouse.
One note: Even though I was unable to wake up the Display, I *was* able to ssh in from my Laptop, so the computer itself wasn't "Suspended". (Also, I never enable "system sleep mode" on a Desktop computer, since I enjoy listening to Classical Music while the Display may be off. If I would be inclined to [i.e. leave my Apartment], I cleanly shutdown the system).
If it doesn't, that's valuable info too.
Look in logs to see if anything interesting happened before you
got to ssh in.
I am still working to understand these Logs. I copied /var/log/messages to my Home Directory and, since it is huge, used the split command. Nothing jumped out.
Many thanks!
Kenneth Parker