Comment 10 for bug 1630909

The workaround mentioned in comment #6 seems to still work when applying it in the guest.

I get the service to start after changing ttyS1 to hvc1

systemctl status autopkgtest.service
● autopkgtest.service - autopkgtest root shell on hvc1
   Loaded: loaded (/etc/systemd/system/autopkgtest.service; enabled; vendor pres
   Active: active (running) since Tue 2018-11-27 11:45:05 UTC; 6s ago
 Main PID: 1246 (sh)
    Tasks: 1 (limit: 552)
   Memory: 768.0K
   CGroup: /system.slice/autopkgtest.service
           └─1246 /bin/sh

Nov 27 11:45:05 autopkgtest systemd[1]: Started autopkgtest root shell on hvc1.

And I get into the then ready root login on ttyS1 socket.
$ sudo nc -U /tmp/ttyS1
# id
id
uid=0(root) gid=0(root) groups=0(root)

But while those elements still work and it does not trigger the same "no root login" issue anymore. It does no more (Disco) work to drive the autopkgtest.
It seems to "just" hang.
Log stays empty and nothing else happens.