Comment 10 for bug 1644237

OK, I've got a branch up that adds permission to talk to the USC mir_socket to lightdm's apparmor profile for guests.

Bug 1593407 is indeed separate (though it also will involve editing the guest apparmor profile). Not only can snaps not be run in a guest session, but they aren't listed in the app drawer either, because we can't talk to snapd.

When testing this, I also noticed a bug in unity8. The screen gets locked due to a timeout. But the guest user can't unlock the screen. Looking at that.