Thierry de Coulon wrote:

> Anyone know a mixer for pulseaudio that let's you setup 7.1 sound? I have
> sound but I can't balance the rear loudspeakers...

I don't have such a card, but in theory it should be configurable below
pulseaudio

For example the kernel document Documentation/sound/hd-audio/controls.rst
explains which hd  audio codec specifix mixer controls can be configured
(driver level)

and btw the mixer for pulse is pavucontrol - needs to be installed extra.

regards