PulseAudio solution (should work for other CM6206 devices as well):
to configure device
- install PulseAudio Volume Control from repository
- open PulseAudio Volume Control
- find device under Configuration (for me it is labeled “CM106 Like Sound
Device”)
- change profile to “Analog Surround 7.1 Output + Digital Stereo (IEC958)
Input”
- select device under Output Devices (green checkmark)
if using with VLC
- go to Preferences->All->Audio->Output Modules->ALSA
- set “Audio output device” to “Playback/recording through the
PulseAudio sound server”
- set “Audio output channels” to “Surround 7.1”
if unhappy with channel mapping
- go to “[Mapping analog-surround-71]” block
- change “channel-map =” line to desired mapping
