This normally happens when movie player or VNC turns it off (you don't
want the screen locking while the movie is playing).
If any of such programs were terminated before they could restore the
regular behaviour, the screen won't lock.
Try using "xset q" to see what the current state is. You can use "xset
+dpms" to enable power saving again.
best
Vladimir Dergachev
On Thu, 21 Jul 2022, martin f krafft wrote:
Hey there,
On my Thinkpad T490, something is keeping the display awake such that
XScreensaver will not lock the machine, and DPMS will never let the screen turn
off.
There are lots of suspects, with the trackpad, the nipple, and a Lenovo wireless
keyboard&mouse attached. However, even after I unplug the wireless receiver,
and disable the trackpad and nipple with
xinput disable …, the machine will not rest.
I've ruled out that this is a problem with XScreensaver. I mean, maybe it is,
but after I lock it manually, it just keeps interrupting with the password
prompt, as if e.g. the mouse was moved or a
key pressed.
At this stage I am wondering what tool there's availeble to me that could shed
some light on this. I've tried xev, but there are no events whatsoever.
I'd appreciate any hints!!
Best,
--
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