root@zynthian:~# systemctl status jack2
? jack2.service - JACK2 Audio Server
   Loaded: loaded (/etc/systemd/system/jack2.service; enabled; vendor preset: enabled)
   Active: activating (auto-restart) (Result: exit-code) since Thu 2023-02-02 15:10:11 GMT; 6s ago
  Process: 15851 ExecStart=/usr/local/bin/jackd -P 70 -t 2000 -s -d alsa -d hw:sndrpihifiberry -r 44100 -p 25
 Main PID: 15851 (code=exited, status=255/EXCEPTION)

Feb 02 15:10:12 zynthian systemd[1]: jack2.service: Service RestartSec=1s expired, scheduling restart.
Feb 02 15:10:12 zynthian systemd[1]: jack2.service: Scheduled restart job, restart counter is at 50.
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