From mboxrd@z Thu Jan  1 00:00:00 1970
From: Fausto Carvalho Marques SIlva <fausto@tse.gov.br>
Subject: Re: Setting audio channels on ICH5 with SALSA
Date: Fri, 13 Jul 2007 12:47:16 -0300
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>The ICH5 AC97 controller does not support mono output; you must use at
>least a stereo stream.
>  
>
Ok, but lets clear the thing here:

 - I ussing salsa v 0.0.6
 - Look at this simple code:

  if ((err = snd_pcm_hw_params_set_channels (playback_handle, hw_params, 
1)) < 0) {
        fprintf (stderr, "cannot set channel count (%s)\n",
                 snd_strerror (err));
        exit (1);
    }

    if ((err = snd_pcm_hw_params_get_channels (hw_params,&j)) < 0) {
        fprintf (stderr, "cannot set channel count (%s)\n",
                 snd_strerror (err));
        exit (1);
    }

when ussing alsa-lib 1.0.14 with device "hw" i get EINVAL,
when ussing alsa-lib 1.0.14 with device "default" i do not get erros 
(set or get functions)
My alsa.conf is the installation default one.
I think the dafault device on alsa.conf is setting something the 
salsa-lib does not...
Any help is wellcome...

Fausto Carvalho Marques Silva