# Audio over Hdmi issues, Ubuntu, RTX 3060

**URL:** <https://forums.developer.nvidia.com/t/audio-over-hdmi-issues-ubuntu-rtx-3060/301409>\
**Category:** Linux\
**Tags:** hdmi, audio\
**Created:** [July 28, 2024, 7:34am UTC](https://forums.developer.nvidia.com/t/audio-over-hdmi-issues-ubuntu-rtx-3060/301409 "2024-07-28T07:34:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rainer.bitschi](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@rainer.bitschi](https://forums.developer.nvidia.com/u/rainer.bitschi)\
**Post date:** [July 28, 2024, 7:34am UTC](https://forums.developer.nvidia.com/t/audio-over-hdmi-issues-ubuntu-rtx-3060/301409/1 "2024-07-28T07:34:41Z")

</div>

I came across weird issues with sound over hdmi Ubuntu 2404. I am generally not familiar with linux, so if I should perform specific tasks, pleas describe detailed.

# My Setup

Asus Prime Z590-P  
ASUS GeForce Dual RTX 3060 12GB V2  
Intel Core i9-11900KF  
One Screen connected to DisplayPort 1 in 2560 x 1440  
One Screen connected to DisplayPort 2 in 1920 x 1080  
AV Receiver connected to HDMI

# Issue #1

- Install Ubuntu 2404 from ISO
- Install Cuda following instructions at cuda download site, thereby installing driver 555
- restart

Result: there is no sound over HDMI, there is no audio signal at the receiver  
But I can even see the vu meter moving as sound should play  
Audio is fine with noveau drivers

## My diagnose:

In Settings / Displays the resolution of the HDMI device is by default 3840 x 2160  
I set resolution to 1920 x 1080 and 60 Hz sound will immediately appear, but see below

# Issue #2

Do as above, but use any driver between 535 and 555  
Play any sound, for example in Firefox load [https://www.youtube.com/watch?v=nMfPqeZjc2c](https://www.youtube.com/watch?v=nMfPqeZjc2c)  
 → notice audio drops out repeatedly and frequently when you do normal work like opening windows, switching between applications, opening files…  
Audio is fine with noveau drivers

## My diagnose:

In Bios the PCIE Generation setting for the graphics card MUST be set to Gen2  
Gen3 or Gen4 or Auto will produce drop outs  
Bios version was 1803 as well as latest version 2002  
**Upon real close inspection I believe this issue also affects Windows 11 as I do notice rare and tiny audio distortions there as well, there also using latest driver 555**

I hope you can reproduce the issues, I can turn both issues on and off 100% by changing the described settings

Greets, Rainer