samsung hw-q60r for PC/windows via HDMI 5.1 not recognized

[Vrailor]

Hello,

I'm trying to  use the sound system on PC. In the soundmenu in Windows it is recognized/listed as "EP-HDMI-RX]". (When it's connected via Blutooth it shows as "[AV] Samsung Soundbar Q6R-Series Stereo".) Both way, sound is successfully played in all boxes (Soundbar, Woofer, Rear-Boxen).

But I can only select mono or stereo under the Windows menu, but no 2.1 oder 5.1.

Why can't other option be selected? What can I do to use the full 5.1? Why is it not fully recognizd as 5.1 system under windows?

Further information:
Windows 10 (up-to-date)
Connection via HDMI-out at the PC (GPU or motherboard makes no difference)
HDMI-in at the soundbar

Thanks

Frank

[Gurky]

It won't work over GPu as not an Earc or even arc port I don't think ?

Bt will only do mono due to BT. You might need a audio pcie card with HDMI arc