Hi.
After 2 hours of "edit, reboot, fail" I am giving up and ask here.
I feel like what I want should be relatively simple, but it isn't.
I'd like to launch JACK via Systemd whenever a certain
card is present. I have a udev rule in /etc/udev/rules.d/10-8A.rules
that looks like this:
ACTION=="add", SUBSYSTEMS=="sound", ATTRS{id}=="D8A", TAG+="systemd",
SYMLINK+="MOTU-8A"
This works, I get a /dev/MOTU-8A symlink. The idea was to declare
[Install]
WantedBy=dev-MOTU-8A.device
in my systemd user service for JACK. However, contrary to
what the web seems to document, the symlinked device does not
show up in systemctl. So apparently, I can't depend on it either.
I am guessing anyone here must have a similar setup.
In its purest form, I am looking for a way to launch
a systemd user service once a certain ALSA hw device is available.
I see references to ENV{SYSTEMD_USER_WANTS}="jack.service", however,
I totally fail how this should work. Udev has no idea which user
should launch this service.
Any hints to untangle this sort of messy situation?
--
CYa,
⡍⠁⠗⠊⠕
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