Comment 13 for bug 1721839

Now in Bionic the only systemd problem known to me is the quoting/unquoting turnaround problem mentioned here.

In system-config-printer this problem got worked around upstream by calling the systemd service with the simpler bus and device IDs and not with the device path. This works reliably in Bionic and probably also in Artful.

Another, more severe severe systemd problem in Artful was that systemd did not unregister (at least some) USB devices when they got unplugged. This problem went away in Bionic.

So in Bionic I do not have any problems with USB printer auto-setup any more.