AMD 6800XT sending stereo output to LG TV

Dirk Diggler · 13 Nov 2022 at 17:28

I've got my 6800XT linked to my LG48CX via HDMI cable.
I've got my Denon AVR-S760 connected to the TV ARC socket.

All output from the TV (Freeview, Native TV apps like Netflix, Fire TV Stick, PS5 etc.) is being picked up as surround, except the PC which is prompting the Denon to switch to stereo output as soon as I switch it on.

Why is my GPU sending stereo output to the TV and how can I change this?

TIA

hornetstinger · 15 Nov 2022 at 14:39

You need to set audio output settings as bitstream.

Load up MPC HC and in audio decoder select all formats your AVR supports.

I don't know about Nvidia audio output in four settings I can't find mine in ATI ryzen laptop settings either.

Bitstreaming Audio with Media Player Classic Home Cinema - Ruben Alamina

If you use Media Player Classic Home Cinema as your default media player chances are you are not aware it doesn’t output multi-channel audio in bitstream form by default. What this means is that if you have an external A/V receiver you are not sending it audio in multi-channel formats like AC3...

rubenalamina.mx

Then play DD, DTS movie/TV show, then hd audio and Atmos

Dirk Diggler · 15 Nov 2022 at 14:45

hornetstinger said:
Load up MPC HC and in audio decoder select all formats your AVR supports.

Hi, what's the MPC HC?

Ah, edit to see you're meaning Media Player. I can try that, but that won't fix the issue with stereo output in games will it?

hornetstinger · 15 Nov 2022 at 14:58

For games you'll need to use DTS/DD live encoder, as games are usually stereo pcm. I use a DSP mode on my avr. Or if use dedicated soundcard that has DD live encoder but that means lossy encoding so if game has had sound it's downsampling

If you can output multi channel pcm over hdmi in games perhaps that might work

Another option would be use your soundcard analogue outputs into the Denon 5.1 analogue RCA input.

hornetstinger · 15 Nov 2022 at 15:09

Your Denon doesn't have analogue 5.1 input

I'd try sending multi channel pcm from your pc hdmi to the Denon.

Try and get movies working in original sound first once that's working you know got that done

Dirk Diggler · 15 Nov 2022 at 15:50

Wow, I had no idea it was this much grief trying to get proper audio output from PC - everything else seems to cope with ease, even my Amazon stick and native LG apps.

Thanks for the assistance @hornetstinger, but I'll stick to my Audeze cans with the PC