Jaunty 9.04, jackd and two Gina 24 soundcards

Kiernan Holland rofthorax at gmail.com
Sun Aug 16 23:20:55 BST 2009

I got some USB sound cards, I was wondering this myself..
I haven't got them yet, but I wanted to see if I could add inputs/outputs
just by adding cheap USB sound devices. 60MB/sec should be adequate for
parallel multi-track recording from USB2.0 . Plus I've noticed those cheap
sound devices seem to have better sound recording than some sound cards
I've had (no electrical interference from other cards?).

> After much googling several people say that the only way to get two
> cards to work with jackd is to do the alsa pcm_multi thing. Is this
> still the case or is it out of date? I suspect the latter, because
> hw:0,1 appears as an option in qjackctl's setup screen.
> If I try to specify the number of channels explicitly, jackd fails
> saying (e.g.) that alsa "cannot set channel count to 16 for playback".
> Any thoughts?
> TIA.
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> Richard Lamont                        http://www.lamont.me.uk/
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