[alsa-devel] [PATCH 1/2] Remove definition for surround sound devices on ICE1712.

[Alan Horstmann]

On Tuesday 20 January 2009 13:49, Diego E. 'Flameeyes' Pettenò wrote:
> Jaroslav Kysela <perex at perex.cz> writes:
> > Do you have seen M-Audio Delta 1010 ?

Or DMX6fire, or Hoontech/ST.Audio dsp2000, or rest of a list... It seems to me 
that only a few cut-down card versions have only 2 analogue in/out.

> Still, as they are the devices are non-functional at least on my card,
> and I'm ready to bet that the same would happen on the Delta 1010 given
> that the number of channels is not coherent (you try to open surround71
> as 8-channels and it'll fail because this minimal card has 10; if the
> 1010 has the same amount of channels, it'll still fail).

Here (on a rather old Alsa version)  on DMX6fire:

aplay -Dfront try1.wav

does fail unless try1.wav is a 10-channel file, whereupon just the first 2 
channels play out.  A standard stereo wav file fails with a sample format 
error.  So there is something not quite right with the config files.

Does the surround and front both need the asym slave.format & slave.channels 
definitions?  Right now I can't do further testing; maybe later.

Alan