In my case there is an external mouse and keyboard.  It's the presence of the external monitor that causes the problem.  All my systems share keyboard and mouse via kvm switch.  One system shares the monitor via the kvm switch (it's VGA) while the laptop in question is directly connected to the laptop via HDMI cable.

Paolo

On 3/17/22 11:48, Barry wrote:

On 17 Mar 2022, at 15:27, Paolo Galtieri <pgalti...@gmail.com> wrote:

Folks,
   I have 2 laptops, one running F31 the other F34.  When I close the lid on 
the F31 system it suspends as it is supposed to.  I can ping the system and I 
get no response.  On the F34 system I close the lid and the system continues 
running.  I can still login to the system from the external monitor.  The power 
management configuration says suspend on lid closed on both systems.  I 
discovered that the reason it doesn't suspend on the F34 system is the external 
monitor.  My systems share an external monitor via a kvm switch.  Depending on 
which system the external monitor is connected to that system will not suspend 
on lid closure.  I verified the same thing happens with the F31 system.  There 
is nothing in the power management configuration that says anything about an 
external devices.
My guess is that the lid closed is ignored because you can “obviously”
use the system on the external display. Is there and external keyboard or
Mouse connected as well?

MacOS allows the system to run with the lid closed only if,
power, keyboard and screen and connected. I wonder if the DE is doing the same?

Barry

Is there any way to actually suspend a laptop when the lid is closed regardless 
of any external devices?

One thing I should mention is that the external monitor is directly connected 
to the F34 system via an HDMI cable, it's only the keyboard and mouse that go 
through the kvm switch. If I directly connect the monitor to the F31 system, 
also via HDMI, then it also fails to suspend on lid closure.

Any help is appreciated.

Paolo
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