Hi, thanks for your response. That really helps. Now I call with "control=Master" and pulseaudio changes the alsa Master volume. PCM Playback Volume is not touched by pulseaudio. > Pulseaudio doesn't currently have > configuration for elements with these names, but adding the > configuration is easier than writing code for supporting 6-channel > elements. I am not sure if I understood you correctly. Is it possible to control in addition the PCM Playback Volumes? I adapted the driver according to your proposal and alsa now list the controls as followed... ******************************************** $$ amixer -Dhw:2 scontents Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined Playback channels: Mono Limits: Playback 0 - 100 Mono: Playback 100 [100%] Simple mixer control 'PCM Center',0 Capabilities: pvolume pvolume-joined Playback channels: Mono Limits: Playback 0 - 100 Mono: Playback 100 [100%] Simple mixer control 'PCM Front',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 100 Mono: Front Left: Playback 100 [100%] Front Right: Playback 100 [100%] Simple mixer control 'PCM LFE',0 Capabilities: pvolume pvolume-joined Playback channels: Mono Limits: Playback 0 - 100 Mono: Playback 100 [100%] Simple mixer control 'PCM Rear',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 100 Mono: Front Left: Playback 100 [100%] Front Right: Playback 100 [100%] ********************************************* I know that channels are showing up weird things like "Front Left - Front Right" for "PCM Rear". Havn't yet seen where to change this and if pulseaudio will grab the controls then. Any clue? Best regards Peter