Date: Mon, 5 Apr 2010 15:18:24 +0100 (BST)
From: Mark Hills <mark@...>
To: xwax-devel@...
Cc: Dinis Ya <dinis@...>
Subject: Re: [xwax-devel] mixvibes u46mk2 muting the peep

I've been looking more closely at how to mute the monitoring of incoming 
audio on this soundcard. The obvious mixer controls only go to -46dB, the 
input audio can still be heard on the output.

I found that to mute all four inputs (two stereo) I have to do the 
following commands in sequence:

  $ amixer -c U46DJ cset numid=4 off
  $ amixer -c U46DJ cset numid=5 off
  $ amixer -c U46DJ cset numid=4 on

Yes, the switching off-on of numid=4 is not a typo, and does seem rather 
odd. When I get time I might ask the ALSA devs about this.

For info, I am using the attached .asoundrc, and starting xwax with

  $ xwax -m 5 -r 48000 -a u46dj_pair1 -a u46dj_pair2

-- 
Mark