Ubuntu
lxdm package

  1. Bug #1240336
  2. Comment #55

Comment 55 for bug 1240336

Revision history for this message
menner (menner) wrote : Re: Not authorized to perform operation / Unable to determine the session we are in: No session for pid

Solution #32 , appending

 session required pam_loginuid.so
 session required pam_systemd.so

to /etc/pam.d/lxdm

made everything work.
Thanks