[Bug 33820] Re: Pressing power button displays dialog, it does not switch off computer

[Aaron Whitehouse]

Here is an alternative suggestion. Why not bring up the menu with press
one, and then shut down if the button is pressed again (after a slight
delay)? This should prevent accidental shutdowns, give the options to
the user and allow the user to shut down without a mouse/keyboard.

-- 
Pressing power button displays dialog, it does not switch off computer
https://launchpad.net/bugs/33820