i cannot shutdown my computer through GUI or CLI when i put the command

or press the shutdown button it goes to the login prompt and stays like that afterwards, so i press CTRL+ALT+delete (which works) but that only restarts it and closes processes like winbind and apache

———- Post updated at 01:30 AM ———- Previous update was at 01:22 AM ———-

i m using mint 13 OS
kernal 3.2.0