My /etc/lightdm/lightdm.conf contained autologin-user=<user>. Commenting out this line solved this issue for me. Autologin was not active - I had to login with password, and I never selected autologin.
** Changed in: nautilus (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/762352 Title: cannot mount usb device i get "not authorized" on my usual authorized user and "users-admin" do not show user advanced properties To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/762352/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs