Samsung G9 C49G97T and MacOS audio output option

[usergvhSc0ZSLw]

When connecting my Macbook with the G9 monitor via hdmi, the hdmi audio option does not show up (video is fine). Without this option, I can't select it as the sound output. I have the monitor connected to external speakers.  Audio works with Windows 10, just not with the Mac.

I also have a Samsung 49" CH90 that doesn't have this problem with the Mac.

Here's some how-tos, which doesn't help:

https://support.apple.com/en-in/HT204388

[usergvhSc0ZSLw · Accepted solution]

I appears to work if you change the HDMI input mode to 1.4 or if using HDMI 2.0, change the PC/AV mode to AV instead of PC.