Daniel Mack wrote:
The switch's name is 'Master Capture Switch' which means to me that it is a thing that switches the capture on and off, and hence, it should be set to 'on' for normal operation. If it was meant to mute the input when switched on, the name should be 'Master Caputure Mute Switch' or something, right?
Beats me. I'm the one asking questions! But you still haven't told me the difference between "------" and "L R". Does "------" mean that capture should be muted, because it's been switched off?
Don't know about the alsamixer tool, but with amixer, you can set the channels individually with the following syntax:
$ amixer cset numid=8 on,off numid=8,iface=MIXER,name='Master Playback Switch' ; type=BOOLEAN,access=rw------,values=2 : values=on,off
I guess it's an alsamixer bug.