[LAU] Trying to run jackd from udev

[R. Mattes]

On Sat, 23 Mar 2013 08:43:20 -0700, Len Ovens wrote

> Which would not work here... but, maybe try changing
> /etc/security/limits.d/audio.conf (or it's equiv) to be user specific
> instead of group. Nope that whole file relies on PAM.
>
> There is always the ugly way:
>
> Have your udev module touch a file on plug in and rm it on unplug.
> Run a user space loop that looks for that file and runs jack (if
> needed) and connects whatever. File gone resets to look for file
> coming back.

But why so utterly complex? Just write a small script that will
be executed by udev:

 #!/bin/bash

 # give us more realtime
 ulimit -r 95
 # N.B.: you might want to also aquire higher memory
 # and nice settings ...

 # run command ...
 sudo -u your_user your_command

As a test, use

 sudo -u your_user /bin/bash -c "id && ulimit -a"

to see whether it works.

 HTH Ralf Mattes


--
R. Mattes -
Hochschule fuer Musik Freiburg
rm at inm.mh-freiburg.de