RX570 is recognized and working normally in games, only HDMI audio does not work.
many panels do not have built-in speakers so my LG panel is one such unit, so I use a speaker system
My monitor has a speaker, the HDMI sound of the RX570 worked until Friday. The monitor sound is working normally with a notebook, with the same HDMI cable as the PC. It is some software bug or BIOS setup. Another day this also happened but a few minutes later it returned to normal.
I found this.
I have seen that happened a lot of time too, windows 1903 has a whole new level of bugs to fix
I also tried that before but it does not work. Right click the .inf file and click install. It says it works but the version showing up in the software tab of radeon settings is still the same.
I suggest using the motherboard audio which seems to work better with good speakers etc
That's what I'm doing for now, I got my 18-year-old speakers. It's working fine like that.
New speakers are better sounding than old one by far
Issue resolved, I downgraded the motherboard BIOS, I came back to the version that I was before doing the update, now the HDMI sound is working normally.