Have this on Ubuntu 14.10 Utopic. Try everything mentioned above but nothing work.
When first start at the login screen, I can shutdown/ restart/ suspend by using the button at the top panel. After login to the account I have this bugs and can't shutdown/ restart/ suspend without 'sudo' command line. Logout to the login screen again, I lost the ability to shutdown/ restart/ suspend via the button at the top panel too. Reboot the system and everything happen again.
Have this on Ubuntu 14.10 Utopic. Try everything mentioned above but nothing work.
When first start at the login screen, I can shutdown/ restart/ suspend by using the button at the top panel. After login to the account I have this bugs and can't shutdown/ restart/ suspend without 'sudo' command line. Logout to the login screen again, I lost the ability to shutdown/ restart/ suspend via the button at the top panel too. Reboot the system and everything happen again.