Maybe this thread can help you.
Hey man, thanks for replying. I was losing hope so I took the entire config settings and slammed it and surprised it worked. After that I just started removing line by line and checking by rebooting to see whether it still works to determine which is the correct one that works.
Just got my RPI 8GB today and flashed LibreELEC on it and installed Argon One script on it. I have already set hdmi_drive=2 and there is still no sound. When I switch to Analogue and plug in a headphones and switch the Audio Output Device to HDMI / HDMI + Analog, I get sound only on the headphones . When I disassembled and used the RPI4 without the case, the audio seemed to work fine. This only happens when it is connected to the Argon One Case. Really appreciate any help
Kodi Log: http://ix.io/2o1Y
Update: Used another SD card to boot NOOBS and the audio was working, seems to not work only on LibreELEC.
Follow-up: Reflashed a fresh LibreELEC and booted without touching anything. Still the same issue.
Solved: Added 4 lines of code to my config.txt
hdmi_drive=2
hdmi_ignore_edid=0xa5000080
hdmi_mode=16
hdmi_group=1Credits to No audio which helped me partly