[PD] Pd and pulseaudio

[Kaj Ailomaa]

On Fri, 01 Feb 2013 19:45:12 +0100, Roman Haefeli <reduzent at gmail.com>  
wrote:

> On Fre, 2013-02-01 at 10:37 -0500, Hans-Christoph Steiner wrote:
>
> [...]
>
>> Yeah, that sounds like my experience as well.  One thing I've heard is  
>> that
>> pulseaudio can use jack as the backend instead of ALSA.  That sounds  
>> like an
>> ideal situation.  Anyone messed with that?
>
> Yeah, there are some tutorials around about how to install the jack-sink
> plugin for pulseaudio. It worked well for me. But it had the side-effect
> that  the volume control keys didn't work anymore.
>
> Roman
>
>
>
>
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Just install pulseaudio-module-jack
Use jackdbus instead of jackd (jackd2 in Debian based) to have the module  
activate jack sink and source automatically when starting jackdbus.
Some jack control apps will want to start jackdbus. jack_control is a  
command line tool for starting jackdbus. Just do:
jack_control start|stop

If using qjackctl, make sure dbus is enabled in Setup -> Misc

Restart PA after installing the module. Written by David Henningson as a  
starting point for integrating jack with PA.

jack is able to grab the audio device from PA, but this feature is a  
little buggy, so it won't work every time. It happens through dbus, and  
it's some code that the author Poettering implemented in both PA and jack.  
jack is set to have higher priority, and PA is supposed to let go of the  
card, and let jack grab it.