I don't know of any other method other than to make logind allow this case as you've suggested. We cannot make Mir sessions runs on different VTs as that would make USC not work anymore.
There may be an issue running X11 sessions through USC as they wont have type=mir but will share the same VT.. ** Changed in: systemd (Ubuntu) Assignee: Robert Ancell (robert-ancell) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1673215 Title: Second unity8 user session hangs with a black screen Status in Canonical System Image: Triaged Status in systemd package in Ubuntu: Incomplete Bug description: Login to user1 using u8 as the session login to a second session and select u8 as the session The screen goes black and the fan comes on indicating something is in a tight loop Waited for several minutes and it stays in that state. A hard power cycle is needed. This is with the Zesty as of 3/15, no extra packages installed. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1673215/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp