I found this in the logs: Rejected send message, 1 matched rules; type="method_call", sender=":1.7" (uid=0 pid=7346 comm="/lib/systemd/system d-logind ") interface="org.freedesktop.PolicyKit1.Authority" member="CheckAuthorization" error name="(unset)" requested_reply="0" destination="org.freedesktop.PolicyKit1" (uid=0 pid=15395 comm="/usr/lib/policykit-1/polkitd --no-debug ")
So this problem probably caused by policykit, not LXC. Here is similar issue: https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/797960 ** Project changed: lxc => policykit (Ubuntu) ** Summary changed: - Ubuntu 14.04 LTS Desktop broken in LXC + Ubuntu 14.04 LTS Desktop unusable on headless server -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1543662 Title: Ubuntu 14.04 LTS Desktop unusable on headless server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/policykit/+bug/1543662/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs