Further testing indicates that the above (#50) solution can be removed once you have a working system.
Steps: 1. Added session required pam_loginuid.so session required pam_systemd.so to top of /etc/pam.d/<whatever_DM_file_you _use> 2. Logout, Restart X, Login 3. Check that you can do it all. 4. Remove session required pam_loginuid.so session required pam_systemd.so from /etc/pam.d/<whatever_DM_file_you _use> 5. Logout, Restart X, Login 6. Check that you can STILL do it all. After step 2, I ran through the usual group of crash reports for submission after login. However, on the next login these crash reports stopped occuring. No reboot was performed until after step 6 to confirm the fix remained. As a guess, the upgrade process needs to fufill some kind of rights process that need these PAM lines during login to finish upgrading the system. I tested that this also fixes usability for all other user logins--after performing all steps for one user login, other user logins work as well. So the fix seems to be a system wide correction that only needs to be temporarily applied for a single login (probably requires a user login who belongs to the admin/sudo group). -- 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