Surround sound 4.0 gives no output on Solus Bridgie

Solu_yup_18

Dear community,

I have an issue when switching to surround sound audio from the settings of Solus. Indeed, the stereo setting is working very well. But when I try to switch to "Analog Surround 4.0 Output" I get nothing. Here's a screenshot of the sound menu.

Moreover, I've tried to look on alsamixer in order to find information on my sound card but it doesn't help me more...
Here are others screenshots from alsamixer.

Thanks for your help!!

pomon

Show inxi -A but Your Intel Sunrise Point-LP HD Audio card physically only has a single combo jack (stereo), so real 4.0 surround is impossible – the “Analog Surround 4.0” profiles you see are just virtual upmixing and won’t give you actual rear channels.

Solu_yup_18

pomon Thx for your help!