Hi again. Solution #23 in comment #33 worked for me, so many thanks! For those who want to try it, here are the steps:
gksu gedit /etc/pam.d/lightdm Under the first line "#%PAM-1.0" paste the following: session required pam_loginuid.so session required pam_systemd.so ... then log out and back in again. If need be, run "dpkg-reconfigure gdm" and select "lightdm" (that was already selected in my case, so I don't know if OKing it actually made any difference). You shouldn't need to reboot, but do so if a simple logout doesn't do the trick. -- 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: Not authorized to perform operation / Unable to determine the session we are in: No session for pid To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1240336/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
