Re: [Alsa-user] Opposite of "type multi" plugin?

[Takashi I. <ti...@su...>]

At Fri, 01 Feb 2008 15:13:16 +0100,
Johannes Bauer wrote:
> 
> Takashi Iwai schrieb:
> 
> > Depends on the hardware.  Your descrption sounds like a CMIPCI.  In
> > that case, it's a bit hard to do that way because both outputs share
> > the same DAC.  So, the source must be exclusive.
> 
> You are exactly right! It is a CMIPCI.
> 
> But are you sure it only has one DAC?

No, I didn't write it.  Indeed the card has one DAC and one ADC that
can be shared as the secondary DAC.  But, the same (first) DAC is used
for the front output and SPDIF output.

> $ cat /proc/asound/pcm
> 00-02: CMI8738-MC6 : C-Media PCI IEC958 : playback 1 : capture 1
> 00-01: CMI8738-MC6 : C-Media PCI 2nd DAC : playback 1
> 00-00: CMI8738-MC6 : C-Media PCI DAC/ADC : playback 1 : capture 1
> 
> What about the 2nd one it displays?

It's for the independent rear output or multi-channel output.
When the multi-channel is enabled, the first DAC becomes unusable.
(And, of course, the recording is disabled, too.)


Takashi