Why Restart & Shutdown Buttons on login screen

[Rahul Sundaram]

Ralf Corsepius wrote:

> Do you expect arbitrary users to switch off an unattended ("free")
> machine in a lab's or an office's machine pool, a classical workstation
> scenario?
> 
> Q: How to disable these buttons permanently?

IIRC, this is tied to PolicyKit. So you can permanently disable 
authentication as a sys admin for your system. polkit* can help.

Rahul