I've booted the system just to send you the info about ck-list-sessions, sent it and then shutdown and this time it worked (for the first time).<div>Today the system had a quite large update and also I have been using IceWM instead of Gnome these last days. If you want me to try to find what was updated recently, please tell me.</div>
<div><br></div><div>There's one thing, though, that may be useful to know: in order to enable 'reboot' and 'shutdown' from within IceWM I allowed /sbin/reboot and /sbin/halt to use sudo (without password) using the following line</div>
<div>ALL ALL=NOPASSWD: /sbin/halt, /sbin/reboot</div>