GNOME Bugzilla – Bug 659001
No shutdown/restart option in the login screen
Last modified: 2011-09-14 03:43:57 UTC
I understood why, in GNOME 3.0, the shutdown/restart options were hidden from the user session menu while logged in. However, you still had the ability to shutdown/restart from the gdm screen, so users who did not know the magic "alt" trick could still shutdown and restart the computer. In gdm 3.1.91, this menu seems to have vanished.
*** This bug has been marked as a duplicate of bug 657822 ***