Hi,

at home I use a 2+1 audio output speakers + subwoofer.
Sometime I would like to use my headphone instead of speakers in order to not disturb family.
For an unknown reason I'm not able to make it work without unplugging 2+1 speaker and to plug in headphone, while my motherboard/sound ouput allow 7+1 output + digital.

What should I do in order to have both (2+1 output and headphone) working together (connected to MB/computer).
I checked alsamixer without success.

thx a lot.