Re: [Fwd: Multiple cards.]

[Takashi Iwai <tiwai@suse.de>]

At Wed, 12 Jun 2002 21:15:32 +0900,
Patrick Shirkey wrote:
> 
> Takashi Iwai wrote:
> > At Wed, 12 Jun 2002 19:16:59 +0900,
> > Patrick Shirkey wrote:
> > 
> >>In your example you don't say whether your cards have are stereo or mono 
> >>  channels.
> >>
> >>I get this ouput when starting jack
> >>
> >>----
> >># jackd -R -v -d alsa -d ttable
> >>jackd 0.33.0
> >>Copyright 2001-2002 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
> >>
> >>3475 waiting for signals
> >>creating alsa driver ... ttable|1024|2|48000|swmon
> >>ALSA: no playback configurations available
> >>ALSA: cannot configure capture channel
> >>cannot load driver module alsa
> >>jack main caught signal 15
> >>-----
> >>
> >>Using the following in my .asoundrc file. I'm not sure if it is correct 
> >>as card0 has two stereo pcm devices. I'm not sure whether they are being 
> >>defined in the following or not.
> >>
> >>Does
> >>
> >>         slaves.a.channels 2
> >>
> >>refer to the pcm devices
> >>
> >>         eg. hw:0,0 and hw:0,1
> >>
> >>or the first two mono channels available on card0?
> >>
> >>         eg. left and right channels on hw:0,0
> > 
> > 
> > the latter.  hw:0,0 and hw:0,1 are different substreams,
> > i.e. different pcms.
> > 
> > if your second card has only one channel, then the amount of resultant
> > channels will be three, as you modified.  it should work so.
> > 
> > do both cards support the same condition (48kHz) ?
> >  
> > 
> 
> Yes. Testing them seperately they both work at 48Khz
> 
> Do you know what this means?
> 
> ----
> # aplay  -f dat -D ttable /1REC/beastie_boys-track_8.wav
> Playing WAVE '/1REC/beastie_boys-track_8.wav' : Signed 16 bit Little 
> Endian, Rate 44100 Hz, Stereo
> aplay: set_params:737: Broken configuration for this PCM: no 
> configurations available
 
the error came from snd_pcm_hw_params_any().

i'm wondering why the second card has only one channel.
is it really correct?


> # arecord -f cd -D multi -c 3 | aplay -D multi
> Recording WAVE 'stdout' : Signed 16 bit Little Endian, Rate 44100 Hz, 
> Channels 3
> arecord: set_params:737: Broken configuration for this PCM: no 
> configurations available
> Playing WAVE 'stdin' : Signed 16 bit Little Endian, Rate 44100 Hz, 
> Channels 3
> aplay: set_params:737: Broken configuration for this PCM: no 
> configurations available

both aplay and arecord say the same error.  the reason must be
identical.


Takashi

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