How do I restore operation of the shutdown menu

Question

My shutdown menu stopped responding to the mouse click. How should Ubuntu be shutdown at this point? I'm on 12.04 (Precise).

Answer 1

Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command below.

sudo shutdown -h now

Or

sudo halt -p

Answer 2

Go to tty ( ctrl+alt+F1) and login as root then run halt -p. But you should consider and try to figure out or get help for such problem.