> Thinking about it this morning though, it seems to me that
  > possibly the default routing of audio doesn't go through the mixer
  > at all?

I'm quite sure that all output connections (from either the inputs or
the playback channels) are made through the HDSP mixer.  However, it's
quite possible that the HDSP FPGA sets up default unity-gain
connections between the playback channels and their corresponding
outputs (and mutes all of the connections between hardware inputs and
outputs) when it's initialised.

This would explain why snd_hdsp works (i.e. you can playback and
record through the default I/O), although amixer doesn't do anything:
the driver doesn't have to set up any default connections, because
those are part of the FPGA reset state.  I would be surprised if
snd_hdsp could set up connections, but amixer couldn't.

I provided that sample script which tells amixer to disconnect
everything so that you could see if _any_ amixer matrix mixer controls
have an effect on your card (because if they did, it's possible that
the 9652 simply has a different matrix mapping).

-- 
Roger Williams <[EMAIL PROTECTED]>
Qux Tool & Die, Middleborough, Massachusetts
// Omne tulit punctum qui misquit utile dulci //


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