Bug#823987: systemd: after upgrading some libs, login takes much longer until systemd-logind is restarted

[Christoph Anton Mitterer]

Something that happened before sometimes (but not always), just
happened again.

I tried to restart systemd-logind, which sometimes just worked and
fixed the issue:
# systemctl restart systemd-logind.service 
Job for systemd-logind.service failed because a timeout was exceeded. See "systemctl status systemd-logind.service" and "journalctl -xe" for details.
~# systemctl status systemd-logind.service
● systemd-logind.service - Login Service
   Loaded: loaded (/lib/systemd/system/systemd-logind.service; static; vendor preset: enabled)
   Active: activating (start) since Wed 2016-05-11 03:30:14 CEST; 1min 20s ago
     Docs: man:systemd-logind.service(8)
           man:logind.conf(5)
           http://www.freedesktop.org/wiki/Software/systemd/logind
           http://www.freedesktop.org/wiki/Software/systemd/multiseat
 Main PID: 3611 (systemd-logind)
   Status: "Processing requests..."
    Tasks: 1 (limit: 512)
   CGroup: /system.slice/systemd-logind.service
           └─3611 /lib/systemd/systemd-logind

May 11 03:30:14 kronecker systemd[1]: Starting Login Service...
May 11 03:30:14 kronecker systemd-logind[3611]: New seat seat0.
May 11 03:30:14 kronecker systemd-logind[3611]: New session 385 of user root.
May 11 03:30:14 kronecker systemd-logind[3611]: New session 393 of user root.
May 11 03:30:14 kronecker systemd-logind[3611]: New session 388 of user root.
May 11 03:30:14 kronecker systemd-logind[3611]: New session 391 of user root.
May 11 03:30:14 kronecker systemd-logind[3611]: New session 386 of user root.


journalctl spits out this, when doing the restart:
May 11 03:28:43 kronecker systemd[1]: Stopped Login Service.
May 11 03:28:43 kronecker systemd[1]: Starting Login Service...
May 11 03:28:43 kronecker systemd-logind[3594]: New seat seat0.
May 11 03:28:43 kronecker systemd[1]: Started User Manager for UID 0.
May 11 03:28:43 kronecker systemd-logind[3594]: New session 386 of user root.
May 11 03:28:43 kronecker systemd-logind[3594]: New session 393 of user root.
May 11 03:28:43 kronecker systemd-logind[3594]: New session 385 of user root.
May 11 03:28:43 kronecker systemd-logind[3594]: New session 391 of user root.
May 11 03:28:43 kronecker systemd-logind[3594]: New session 388 of user root.
May 11 03:28:46 kronecker systemd[1]: Time has been changed
May 11 03:28:46 kronecker systemd[22063]: Time has been changed
May 11 03:28:46 kronecker systemd[1]: apt-daily.timer: Adding 9h 38min 56.244716s random time.
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