[LAU] Report: Pulse Audio vs Jack on Fedora 11

Fernando Lopez-Lezcano nando at ccrma.Stanford.EDU
Mon Aug 10 19:52:40 EDT 2009

On Thu, 2009-08-06 at 15:16 +0700, Patrick Shirkey wrote:
> Hi,
> I finally got some time to test out the latest version of Fedora 11 for 
> pulse and jack interaction.
> FYI, the version of jack installed from the default Fedora repos is 
> 0.116.1. That means it's jack1 not jack2. So no matter what the latest 
> hooks for working with pulse audio and jack are not in place on the jack 
> side anyway.

That is correct, only jack >= 1.9.3 is good for that, and only if
compiled with the --dbus option (for the full jackdbus experience) or
--dbus --classic for just the pulseaudio soundcard reservation logic. 

While acquiring the card from pulseaudio works on Fedora 11 (starting
jackd "steals" the card form pulseaudio and all pa streams are paused),
the release code in pulseaudio is not working or is incomplete (don't
know which). It will be fixed in fc12... (and/or is fixed currently in
svn, I think). 

For now I'm using a script that replaces the jackd executable to suspend
and unsuspend the pulseaudio streams. Seems to work fine. 

-- Fernando

> But this doesn't matter as I don't have any audio processes running but 
> jackd still can't get access to the default device.
> My experience leaves a lot to be desired considering that Fedora 11 is 
> the latest and greatest version with advanced system config from Lennart 
> himself and I still can't do something as simple as start jackd.
> I'm not pointing any fingers. But I would like to get to the bottom of 
> this usability issue we currently have between pulse audio and jack.

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