Comment 67 for bug 1240336
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| Christoph Erian (kontaktwackler) wrote Re: Not authorized to perform operation / Unable to determine the session we are in: No session for pid | #67 |
Had same issues as described above (update manager - no privilege, shutdown/restart not working out of menu) after upgrade from 14.04 to 14.10.
Following fixed everything:
sudo apt-get install systemd-sysv