Hi,
I’m looking for a way to have a “reboot” and a “force log out user” on the lock screen.
I’ve seen ~/.config/kdeglobals tweaks
I’m not interested in switch user nor sleep (the only two actions that I can enable today).
The use case for reboot or log-the-user out is for people working in shift and the previous shift’s user forgetting to log-out: it leaves no clean way to take over the machine.
Thanks for any pointer.
Hi - for what it’s worth, there’s been an existing feature request in the KDE Bugtracking System around supporting more, potentially configurable actions in the lock screen: 336369 – Lock screen: Add Shut Down and Restart buttons
This looks like something that will just require someone with the time, ability and interest to jump in and implement 
Select “Switch user” and instead of logging in select “Reboot” at the following SDDM Login screen?
At least that is what I remembered from Plasma 5, and just checked should be possible with the current Plasma 6 as well.
Theoretically the .qml could be modified to add such buttons directly to the lock screen, but that will not last very long as it was just announced that this “feature” will be removed very soon for security reasons.