http://git.alsa-project.org/?p=alsa-utils.git;a=blob;f=alsactl/init/default;hb=HEAD
master mono is muted by default when ac97 codec is cold reset
alsactl init
only initialise master, pcm
http:// git.alsa- project. org/?p= alsa-utils. git;a=blob; f=alsactl/ init/default; hb=HEAD
master mono is muted by default when ac97 codec is cold reset
alsactl init
only initialise master, pcm