pulse audio & jack

[Kaj Ailomaa]

On Wed, 14 Nov 2012 16:27:09 +0100, Mac <macdroid53 at gmail.com> wrote:

> When I installed 12.04 UbStudio I was pleased to see pulse audio
> played nice with jack. (i.e. when qjackctl starts pulse sinks/sources
> show up by default).
>
> Is there any documentation or overview of how this is accomplished?
> I'd like to understand and possibly modify what shows up, etc.
>

The way it's automatically done, is by the combination of qjackctl using  
dbus support with jackd2 (i.e. starting jackdbus), and having  
pulseaudio-module-jack installed.
You can check out the source for pulseaudio-module-jack for specifics.

> Or, can anyone post some ideas on where to start? (I googled a bit
> with little success.)
>
> On a related note: if I run/start qjackctl things work fine. If I then
> tell qjackctl to stop and choose yes/continue when it prompts about
> clients still connected it can't connect when I attempt to start it
> again. The message says it can't connect(or start) to the server.
>
> I'm guessing there are stale processes that are not allowing the
> restart, but, I'm not real sure where to begin to determine how to
> correctly stop jack so it doesn't get it's knickers in twist.
>

This is a bug, that hopefully will be fixed in both 12.04 and 12.10 soon.

> Regards,
> Mac