PulseAudio + Jack

Adrian Knoth adi at drcomp.erfurt.thur.de
Sun May 9 22:04:17 UTC 2010

On Thu, May 06, 2010 at 02:53:59PM -0400, Felipe Sateler wrote:

> So, Adrian says Jack2 + PulseAudio is the philosopher's stone. Well,
> maybe not. However, I'm having issues.
> Jack2 is supposed to negotiate the soundcard with pulseaudio. However,
> I need to manually deactivate pulseaudio card output to start jack.

I normally don't run on ALSA, so I don't have much experience with this
feature. Even harder, Nedko, who implemented the DBUS card serveration
for jackd2 don't run pulseaudio.

> And after stopping jack, I needed to restart pulseaudio to get sound
> back again. How is this setup supposed to work? BTW, I have D-Bus
> support enabled in qjackctl (and I start jackd via qjacktcl).

I tried it on my laptop yesterday. qjackctl wasn't able to start jackd
one or two times, but then, out of a sudden, it worked. Terminating
jackd also worked, mplayer was playing all the time to pulseaudio.

Looks like a race condition or some kind of first-time hiccup. Now I
can't even reproduce the behaviour, jackd can always acquire the card.

Just my 0.02EUR

mail: adi at thur.de  	http://adi.thur.de	PGP/GPG: key via keyserver

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