I ran into this problem on Lubuntu 14.04. On that machine, the user created during the installation had no problem but every other regular users were affected.
The workaround was to join the regular users to the sudo group to please polkit. Since I really wanted those users to be "power less" I also added those sudoer rules: jane ALL=(ALL) !ALL jdoe ALL=(ALL) !ALL -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1240336 Title: After release upgrade, the user looses permissions for several basic actions in the system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1240336/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
