I think maybe the jack FAQ needs a section for
headless use, it seems
about twice a year some problem comes up and it takes a few days to work
through all the variations of PAM and systemd caveats needed to get jack
working on an appliance style device.
Which would be great. I've put together everything I needed to do in order to get it
working:
http://forum.audioinjector.net/viewtopic.php?f=5&t=2727&start=30#p5…
That link *should* be publicly accessible.
Regards
/Robert