https://bugs.launchpad.net/ubuntu/+source/policykit/+bug/203955
this may help you some way...in my case the Message was something like this "You are not allow to administrate these settings" -- system policy - cannot authenticate https://bugs.launchpad.net/bugs/202449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
