I updated my Sid system (under Systemd) a few days ago after I hadn't updated for a week or more. Naturally there were a lot of new packages. I noticed almost immediately that all of the options to hibernate sleep and reboot are greyed out. I use lightdm along with several window managers including Mate and Xfce. Every time I logout of a window manager I can't halt or reboot without going into a terminal and issuing the command "reboot". Is this a known bug ? Thanks