If you run ck-list-sessions, you'll see "active = FALSE" for each seat that has "-novtswitch -sharevts" in the X command line. I believe this is why you can't mount USB thumb drives from those seats (policykit sees the seat as inactive so it doesn't mount the drive for that seat).
-- Default policykit configuration does not play nicely with multiseat configurations, resulting in failure to mount usb devices (pen drives) https://bugs.launchpad.net/bugs/218494 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs