On Mon, 06 Jul 2009 09:20:43 +0200
Giso Grimm <gg3137(a)vegri.net> wrote:
  Hi,
 why not simply use "hw:IO" as a device in jack? That works perfectly
 well for me. It is just overwritten by qjackctl if I select a sound
 card from the list. Works also for all other ALSA applications (and
 you can create aliases in .asoundrc of you like, e.g.:
 pcm.!default {
   type plug
 #  slave { pcm "hw:Digi968,0" }
   slave { pcm "hw:DSP" }
   route_policy duplicate
 }
 should work with non-plug definition as well).
 -- Giso
 Carlo Capocasa wrote:
 > Never got it to work...
 >
 > Ivica Ico Bukvic wrote:
 >>> Hi everyone!
 >>>
 >>> I made a quick fix solution to the alsa multicard problem that
 >>> turns up when you have more than one soundcard. In this case, the
 >>> alsa device number is volatile and you have to update your
 >>> QJackCtl config after every boot.
 >>>
 >>> The description is here:
 >>>
 >>> 
https://help.ubuntu.com/community/UbuntuStudio/MulticardQuickfix
 >>>
 >>> It is on the Ubuntu Wiki, because that is what I use, but the
 >>> instructions should work unchanged for any linux distribution.
 >>>
 >>> Thanks for having a look! Let me know if I can improve something.
 >>>
 >>> Carlo
 >> Doesn't the Alsa's option card numbering work any more?
 >>
 >> Ico 
I second that, just look at the output of aplay -l.
in my case:
card 1: UA25 [UA-25]
the in qjackctl or the jack commandline just use hw:UA25
done, no more trouble