Hello!

I’ve been struggling with this for some time now. I am trying to get true 5.1 audio output over HDMI connected to my Denon AVR-4000 receiver.

When looking at my laptop’s (XPS 13 9370) audio control icon, it shows that I can select among a number of options including stereo, 5.1, 7.1. It does properly show that my connected device is my Denon receiver. However, I noticed that when I select 5.1 or 7.1, the audio is quite muffled and low quality. To be certain, I am viewing Disney+ material using Microsoft Edge (which supports full hdmi/audio/4K features, unlike Chrome). I could’ve sworn I got it to work one time and the audio quality was great (and loud :)).

The one time I got it to work I didn’t even have to select 5.1 output to get it to be output over my speakers. I should note that also when a true DD signal is input my receiver it shows on the front panel the signal type (e.g. it should show “Dolby Digital” on the display).

Any ideas here? I have also already tried updating both the display and audio (Realtek) drovers. Yes, I already know that over HDMI the Realtek controlled audio doesn’t factor into this.