Re: [LAU] Jack users - how many channels do you want with PA module-jackdbus-detect? - Linux-audio-user

26 Feb 2013

On Tue, 26 Feb 2013 22:06:11 +0100, Paul Davis  
&lt;paul(a)linuxaudiosystems.com&gt; wrote:

...
  On Tue, Feb 26, 2013 at 2:59 PM, Kaj Ailomaa
&lt;zequence(a)mousike.me&gt; wrote:

  On Tue, 26 Feb 2013 20:22:09 +0100, Paul Davis  
 &lt;paul(a)linuxaudiosystems.com&gt;
 wrote:

  On Tue, Feb 26, 2013 at 2:19 PM, Kaj Ailomaa &lt;zequence(a)mousike.me&gt;  
 wrote:

  Another nice change in pulseaudio 3.0 is that
from what it seems,  
 jack is
 able to grab a device from PA without any problems.

 this has been true for a long time. it is distro packagers who manage  
 to
 break this, not pulseaudio.

 Not true. It was fixed in the upstream code recently. Do you have an
 example of where packaging has broken PA jack interoperability?

 https://bugs.launchpad.net/ubuntu/+source/jack-audio-connection-kit/+bug/48… 
That bug is related to the wrapper script that used to be a part of the  
qjackctl package, and though it still is for current releases, it hasn't  
been doing any suspending of PA for quite a while, because the wrapper  
script has been broken.

The reason for the wrapper script was likely because of the bug where PA  
was not letting go of the device when jack was asking for it. There was a  
mechanism for it, but it wasn't working properly. It would only work on  
some machines, in certain situations. For some, not at all.
There was an upstream fix. I haven't had any issues at all since  
pulseaudio 3.0, and that would indicate that it in deed has been fixed now.