Windows 10: Soundbar Connected to PC via Optical Cable Only Outputs 2 Channel Audio

I've connected my Sonos Beam Gen 2 to my PC using the Sonos provided HDMI cable and provided HDMI to Optical adapter.Windows and my motherboard's audio drivers are fully updated. My motherboard MSI B450 GAMING PRO CARBON AC supports 7.1 sound.The Sonos Beam Gen 2 also supports Dolby Atmos. My issue is that my Sonos app shows the audio only outputting in Stereo PCM. I also don't see anything but 2 channel options in Windows Sound settings > Playback > Properties for my soundbar > Advanced tab > Default Format.This is even more confusing because the Dolby Digital sound test works

:)

 

Windows 10 and audio over optical cable

Go to the Realtek Audio Console and digital output and see what options are available.

You should be able to enable all sound through digital output via optical cable. But only 5.1 pre-mastered videos will be 5.1. All other sounds will be 2 channel stereo via optical cable. You can use the z906 control unit to the stereo signal to 2.1 speakers
or virtualize the stereo signal to 4.1 or all 6 speakers.

 

Windows 10 and audio over optical cable

Hi,

I recently purchased new speakers, Logitech Z906. I am trying to make the digital output of W10 work with my speakers (over an optical audio cable).

My specs:

motherboard MSI MPG X570 GAMING EDGE WIFI

speakers Logitech Z906

an optical cable Star II OPTO Tosslink<>Tosslink

current audio driver: Realtek UAD, v. 6.0.8858.1 (12/10/2019) – the driver provided by MSI on the support page for my MOBO

What I tried:

I downloaded a DST sound demo from
here: Animated Logo (Lossless), audio: DTS-HD MA 5.1 48 kHz.

When played through VLC (and enabled DST in preferences), I can hear properly all 6 channels.

In the device properties (Realtek Digital Output Properties)>Supported formats tab>Encoded formats section I tested DST audio and Dolby digital and both worked on all channels.

The problem is no other audio except for these two tests gets played through the digital output.

My understanding of the problematic:

Optical cable connection is superior to the 3 x 3.5 mm jack connection because of a more quality sound immunity to magnetic fields (since there are quite a few cables behind my PC already with all those speakers, other peripheries, a lamp and so on).

My question:

Is there a way to get all audio (system sounds, browser, games, other applications...) to be played through digital output?

If not, am I correct the proper configuration of speaker connection then should be BOTH optical cable and 3 x 3.5 mm jack 6-channel audio? Then most sounds go through 3 x jack and only certain media (e.g. a movie with DST sound played with VLC) will be sent
through the digital output?

I do not have the possibility of connecting the speakers through an HDMI port.

Thank you all for help!

 

optical cable not recognized by windows 10

hi,

i have a optical cable connected to my vizio soundbar. the 5.1 sound was working perfect. Now sound only comes out of 2 channels. My xbox one is hooked up the same way and works flawlessly. When i try to configure the realtek driver the configure box is
greyed out.(can't click it). I've uninstalled it the driver and reinstalled it to no prevail?