I updated from Xubuntu 16.04 beta-2 to 16.04 today. And now I can't shutdown my laptop but I am able to restart. When I try it the GUI way it just logging out.
When I tried
sudo shutdown -h now
I got the following error:
Failed to start poweroff.target: Transaction is destructive. See system logs and 'systemctl status poweroff.target' for details.
tail /var/log/messages tail: cannot open '/var/log/messages' for reading: No such file or directory
systemctl status poweroff.target
● poweroff.target - Power-Off Loaded: loaded (/lib/systemd/system/poweroff.target; disabled; vendor preset: Active: inactive (dead) Docs: man:systemd.special(7)