[linux-audio-user] JACK of Two Cards

[Jos Laake]

Russell Hanaghan wrote:
> 
> Go to the "Setup" screen in Qjackctl. Under the "Interface" box,
> highlight the existing entry, be it HW:0 or "default" or whatever. Type
> "multi" in its place and hit ok. Then try it...

Okay, I tried 'multi'.  Here's the error message:

creating alsa driver ... multi|multi|1024|2|48000|4|4|nomon|swmeter|-|32bit
ALSA lib pcm.c:1972:(snd_pcm_open_noupdate) Unknown PCM multi
jackd: pcm.c:690: snd_pcm_nonblock: Assertion `pcm' failed.
21:20:53.090 JACK was stopped successfully.

> The other was "ttable" which may have worked but I don't remember. Same
> procedure, just highlite the entry present and type the new one in.

And here's what I get with 'ttable':

creating alsa driver ... 
ttable|ttable|1024|2|48000|4|4|nomon|swmeter|-|32bit
ALSA lib pcm.c:1972:(snd_pcm_open_noupdate) Unknown PCM ttable
jackd: pcm.c:690: snd_pcm_nonblock: Assertion `pcm' failed.
21:29:33.378 JACK was stopped successfully.

Okay, so this 'Interface' box, when you change it to something other
than HW:0 or HW:1, I believe it's gonna try to get the configuration
of that device from '.asoundrc'.  'ttable' is the same entry I got off
the ALSA web site, but I never got it to function.  Do you still have
your '.asoundrc' file?  It would probably be in your '/home/yourid'
directory or in '/root' if you start 'qjackctl' as root.  I understand
it could also be in '/etc/asound.conf'.

Any other alsa configuration gurus wanna chime in and help us out here?

~Jos~