need root permission to poweroff [SOLVED]

[Joe Zeff]

On 03/22/2014 01:13 PM, Peter Lesterhuis wrote:
>
> The problem is solved.
> Someone suggested  I was logged in at the GUI.
> So I launched the GUI (power icon at the right upper corner of the
> screeen), hit my login name, which opened a pull down menu "logout".
> I hit that one and subsequently the problem never occurred anymore.

I'm guessing, then, that only root can reboot or shut down when there's 
more than one GUI session open.  If so, it makes sense because you don't 
want one regular user nuking other people's sessions without warning.