Are you using an APU (AMD 2400G or 3400G) for example?
If so I think the APU conflicts with the GPU sound driver.
That's what happened to me.
Change to a CPU (AMD 3600, 3500x or 2600) that resolves the issue.
Em dom., 1 de dez. de 2019 às 05:06, mejia_david <amd-external@jiveon.com>
escreveu:
Community <https://community.amd.com/?et=watches.email.thread>
Re: RX570 No Audio Over HDMI in Graphics