[LAD] multiple ICE1712 sound cards (as one huge soundcard)

Hi!

I'm trying to merge two ICE1712 based soundcards, so they appear as one big
soundcard in JACK. I tried it as described on John Lapeyre's website:

        http://www.johnlapeyre.com/linux_audio/linux_audio.html

That is, I recompiled libasound2 1.0.14-rc3 with the following patch:

        http://www.johnlapeyre.com/linux_audio/pcm_multi.patch

And compiled JACK 0.109 accordingly and finally installed the .asoundrc file,
listed here:

        http://www.sound-man.co.uk/linuxaudio/ice1712multi.html

However when I try to start jackd with:

        usr/bin/jackd -t 4999 -s -R -m -d alsa -C multi_capture -P multi_playback -p
128 -n 2 -r 44100

it fails with the following messages:

        jackd 0.109.2
        Copyright 2001-2005 Paul Davis and others.
        jackd comes with ABSOLUTELY NO WARRANTY
        This is free software, and you are welcome to redistribute it
        under certain conditions; see the file COPYING for details

        JACK compiled with System V SHM support.
        loading driver ..
        apparent rate = 44100
        creating alsa driver ... multi_playback|multi_capture|128|2|44100|0|0|nomon|
swmeter|-|32bit
        ALSA lib pcm_hw.c:1357:(_snd_pcm_hw_open) Invalid value for card
        ALSA lib pcm_hw.c:1357:(_snd_pcm_hw_open) Invalid value for card
        cannot load driver module alsa
        no message buffer overruns

The target system is a Debian system and I wasn't really sure where to install
the .asoundrc file, so installed it
as /etc/asound.conf, /etc/alsa/asound.conf and in the home directory
as .asoundrc

Does anybody have an idea what could be wrong or could give me pointers how to
debug it?

CU
Christian
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Received on Wed Sep 24 12:15:03 2008