Comment 47 for bug 936539

http://cgit.freedesktop.org/pulseaudio/pulseaudio/plain/src/modules/alsa/mixer/paths/analog-output.conf

[Element Master]
switch = mute
volume = merge
override-map.1 = all
override-map.2 = all-left,all-right

do pulseaudio need a 8 channel override map for those 8 channel master playback volume control ?