Windows 10: How to get stereo mix working with a USB audio interface?

Stereo mix doesn't pick up any OS audio, and no application can record it, OTHER THAN Faststone Capture, which somehow captures the screen and all of the audio just fine. Besides it I tried Audition and Audacity, and there's just no data gets to the stereo mix line. Stereo mix is set as default recording device...

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:)

 

Audacity Error Initializing Audio when I have USB audio interface on


@fireberd. I do have Stereo mix set as recording default. And this was working last week so I don't understand what changed.


@spapakons, I'm not sure I understand what you are suggesting. Could you re-phrase your statements.

 

Stereo mix showing but not showing audio

A potential solution for those who use digital outputs to a separate sound system for your sounds (rather than speakers or headphones), and have tried all the normal suggestions when Stereo Mix shows up on the recording tab, but shows no audio, and programs
such as Audacity won't record a signal.

I use digital optical out from my sound card (Realtek High Definition Audio) to my sound system. There are therefore no speakers connected, and no speakers show in the sound settings. And no audio showing in Stereo Mix.

However, connecting headphones instantly solves the problem - stereo mix shows audio, programs like Audacity can record again (plugging headphones in the headphones jack makes no difference to the digital optical output signal = does not mute it).

I would be really interested to know why Stereo Mix will not show audio if there are no speakers or headphones connected.

 

Stereo Mix

How can I get stereo mix back as it appears my windows 10 laptop has conexant smart Audio HD ( LenovoZ50) which I do not like. I am aware the sound card does not of itself support stereo mix.

Any suggestions please?