http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/mixer?id=052316e4195cc01c6b13ce9e21724cb7c25aad82
as desktop speaker.conf has beem merged
if your desktop speaker use mono out playback volume/switch
you have to add element master mono to speaker.conf
http:// cgit.freedeskto p.org/pulseaudi o/pulseaudio/ commit/ src/modules/ alsa/mixer? id=052316e4195c c01c6b13ce9e217 24cb7c25aad82
as desktop speaker.conf has beem merged
if your desktop speaker use mono out playback volume/switch
you have to add element master mono to speaker.conf