For me the issue about getting duplicate names in the output was due to the fact that my user was in both the "admin" and "sudo" group. Seems like polkit first lists all user from the sudo group, then all users from the admin group; not checking if the same user was listed twice.
so after a quick sudo gpasswd -d $USER admin The duplicate no longer appear. Hope this information is helpful. //Rikard -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1451815 Title: lists users multiple time when requiring user authentication To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/1451815/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs