So root invoked some script, and specific user session should be locked. I managed to get this working before, but now I cannot win.
Currently I'm following this article: https://0day.work/locking-the-screen-when-removing-a-yubikey/ everything is just fine only to last step, actual locking.
this command is invoked:
# echo $DISPLAY
:0
# echo $XAUTHORITY
/home/mmucha/.Xauthority
# su "mmucha" -c "/usr/bin/gnome-screensaver-command --lock"
Can't connect to screensaver!
same for:
runuser -l mmucha -c 'export DISPLAY=:0;export XAUTHORITY=/home/mmucha/.Xauthority;gnome-screensaver-command -l'
what am I missing?
EDIT: ubuntu 18.04, running cinnamon-desktop, however this probably does not have any influence. It does not work equally for cinnamon-screensaver-command and for gnome-screensaver-command.
