Fixing Elgato 4K X that has no sound
We have been using the Elgato 4K X for over a year and it had been flawless. Yesterday I did my first firmware update to version 24.12.10. Nothing had changed the same software, OBS Studio, same HDMI and USB-C cables we had no sound, but we had video. The HDMI goes from the XBox Series X to the Elgato, then to the TV. The Elgato connects via USB-C to my M2 MacBook Pro.
After doing some research I found the solution. It seems the EDID setting had changed in the Capture Device Utility. I am not sure what the setting was before.
According to the Elgato documentation, Merged should be the default. Mine was set to Display. The screenshot below shows where the setting is changed. It shows Internal which did fix my issue, but I have sinced change it to Merge as that is the default.
Capture Device Utility EDID Mode