It seems like the problem occurs, because /usr/lib/policykit-1-gnome /polkit-gnome-authentication-agent-1 is not running.
After running the authentication agent manually the authentication window appears as expected and administrative operations can be executed without problems. I am trying to understand why the authentication agent is not getting started automatically on login. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/874757 Title: Cannot toggle additional sources until authentication has been granted through other means To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/874757/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
