Rtx 3090 + Samsung Q90 TV and HW-Q90R soundbar issues

[Mambros84]

Hi all,

As mentioned in the title I have an RTX 3090 connected to a Samsung Q90 TV and an HW-Q90R soundbar.

I managed to enable the G-sync connecting an hdmi 2.1 cable to the port 4 on the TV receiver but I am having several issues with the audio.

If I try to pass the audio to the soundbar through eArc I can't manage to get Dolby Atmos for Home Théâtre in Windows (I can get up to Dolby Atmos for Headphones). I always had to troubleshoot the sound after starting the pc to fix it and make it work. It stopped working now since a couple of days and the workaround doesn't work anymore (it use to ask to play a test sound when able to fix it, now it doesn't).

On the other hand I tried to connect the soundbar directly to the to the RTX 3090 through a DP to Hdmi cable, I get the Dolby Atmos for Home Theatre in Windows, but I get no sound.

In both cases, when there's no sound coming out of the soundbar, still, I can see the volume in Windows being displayed (the green lines when playing a test sound) while checking the audio devices.

Not sure why audio is not coming out, any thoughts?

 

[Mambros84]

Try using DP for the video and HDMI for the sound. I have a very similar set up to you albeit differing generations of hardware and that’s how my set up works.
Having said that, Atmos can be a bit hit and miss. in my case it usually works but sometimes it doesn’t despite nothing changing. Before you start swapping cables, put the sound into 5.1 or even 2.0 and see if anything beeps out and work from there.

Edit for clarity and because I missed some info in the OP: DP to the TV, HDMI to the soundbar. No pass through from the TV to soundbar

I tried to do so but for some reason the soundbar is recognised as a second display causing a hell of issues... How did you manage to avoid this?