[ubuntu-studio-users] Autostart jackd question

[Ralf Mardorf]

On Fri, 8 Jul 2016 15:38:11 +0200, Thomas Pfundt wrote:
>Of course, I can get QjackCtl to open automatically by additing
>it to the startup applications, but I would like to know if there's a
>way to simply start Jack with the assigned settings in the background
>somehow?

Hi,

jackdbus of jackd?

QjackCtl writes the last used settings for jackd to $HOME/.jackdrc.
Note, this aren't the settings for QjackCtl, those are stored in
$HOME/.config/rncbc.org/QjackCtl.conf.

You could simply auto-launch jackd by running
  $(cat $HOME/.jackdrc)
when starting a user session.

[rocketmouse at archlinux ~]$ cat $HOME/.jackdrc 
/usr/bin/jackd -dalsa -dhw:0 -r48000 -p256 -n2
[rocketmouse at archlinux ~]$ $(cat $HOME/.jackdrc)
jackdmp 1.9.11
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2015 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
no message buffer overruns
no message buffer overruns
no message buffer overruns
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|256|2|48000|0|0|nomon|swmeter|-|32bit
configuring for 48000Hz, period = 256 frames (5.3 ms), buffer = 2 periods
ALSA: final selected sample format for capture: 32bit integer little-endian
ALSA: use 64 periods for capture
ALSA: final selected sample format for playback: 32bit integer little-endian
ALSA: use 64 periods for playback
^CJack main caught signal 2
Released audio card Audio0
audio_reservation_finish

Regards,
Ralf