[LAU] pcm_multi and JACKD2 1.9.7

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To: linux-audio-user <linux-audio-user@...>
Date: Wednesday, April 17, 2013 - 11:01 am

Hello everyone!
IO'm trying to set up my delta and E-MU cards as one, using the ALSA
pcm_multi device type. But it does not work.
Starting of one pcm_multi device with only one slave (the analog I/O of the
E-MU 1212m, works fine.
Trying the same with only the digital ins also works. Trying to put both
hw:4,0 and hw:4,2 (analog and digital) in one pcm_multi capture device doesn't
work. JACK tells me:
ALSA: no playback configurations available (Invalid argument)
ALSA: cannot configure capture channel
Cannot initialize driver
and finally fails with status of -1.
I noticed - in testing -, that when I only give one capture device and no
playback, JACK seems to assume, tat the control device is hw:0 (which in my
case is just ALSA loopback. I have to supply hw:4 or hw:4,0 as output to see a
different control device.
Question: why does ALSA or ACK want to create a playback setting for the
capture device? Is there perhaps a special key/attribute to use inside the the
multi devices? I took my setup from here:
My kernel version is 3.9.0-rc6 and the ALSA is shipped with the kernel.
JACKD is JACKDMP version 1.9.7. the MAudio Delta's S/PDIFF out is linked to
the E-MU's S/PDIFF in and clock source in the mixer is set to S/PDIFF. The
Delta's samplerate is 48kHz.
Any ideas? Similar problems, that got fixed, perhaps?
Warm regards

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Messages in current thread:
[LAU] pcm_multi and JACKD2 1.9.7, Julien Claassen, (Wed Apr 17, 11:01 am)
Re: [LAU] pcm_multi and JACKD2 1.9.7, Julien Claassen, (Wed Apr 17, 5:49 pm)
Re: [LAU] pcm_multi and JACKD2 1.9.7, Paul Davis, (Wed Apr 17, 6:00 pm)