On Sunday 02 May 2010 22:17:40 Adrian Knoth wrote:
> On Sun, May 02, 2010 at 06:01:09PM +0300, David Baron wrote:
> > > > I need to "connect" vlc###->system in the qjackctl connection pane to
> > > > hear music. At each track playing an audio-CD, for example, it
> > > > disconnects and I need to reconnect to hear music. Not a desirable
> > > > behavior!
> > > 
> > > Shouldn't it be sufficient to go to the preference menu, select "Show
> > > all settings", then choose Audio/Output modules/JACK and say "connect
> > > to clients matching" with or without "automatically connect to
> > > writable clients"?
> > 
> > This, once found, works just fine! No need to touch qjackctl at all.
> Glad it worked. ;)
> > Question is: what should be the default mode when jackd is found
> > running on program start (which would busy up alsa)? I think it should
> > simply play.
> > 
> > At worst, auto-connect should be in the simple options and default
> > checked.
> I expected this proposal, and I think it's wrong. The point is: jack is
> not a tool for ordinary desktop users but targeted at professional music
> production. Jack is not supposed to run as a desktop sound server, this
> is what pulseaudio is for.
> Consequently, there is no sensible default where to connect. Physical
> outs? Or some FX-chain in advance? Or no connection at all, because the
> output will be fed to a streaming server?
> And BTW: a running jackd doesn't imply that ALSA is busy. Normally,
> there is a dedicated (separate) professional audio card in a jackd setup
> that's connected to the studio. And if you run jackd in dummy mode, no
> soundcard at all would be occupied.
> > > BTW: Unless you really need to separate the vlc outputs from all other
> > > system outputs, I recommend using the pulseaudio audio plugin instead
> > > and then use pulseaudio-module-jack to bridge to jackd. This way, your
> > > connections are always on, no need to mess with qjackctl at all. ;)
> > 
> > I wish pulse was up to snuff but it is just too troublesome. Someday.
> You think so? I claim that's FUD. If something isn't working, file a bug
> report against pulseaudio or the application in question. To me, it
> works like a charm, vlc, skype, flash, mplayer and the lot all
> outputting to pulseaudio which then feeds everything to jackd. Way more
> stable than the libasound2-jackd-alsa bridge.
> And make sure to try the DBUS interface support in current qjackctl.
> (setup/Misc-tab). This might be especially useful in your single card
> setup: with DBUS support, jackd2 (then jackdbus) talks to pulseaudio,
> and pulseaudio will release the soundcard, so jackd can be started.
> In other words, pulseaudio and jackd hand over the card to each other.
> No need to look for and shutdown all the apps that prevent jackd from
> starting.
> You should really give it a whirl. I never want to go back.

OK, fair enough. However, if there is no jack running, the option should have 
no effect so so what?

For pulseaudio FUD, it seems that a good part of the linux audio community 
dislikes pulse and is circulating this message. One probably can live without 
jack and pulse simply to listen to mp3s and streams.

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