4K HDMI output from MacMini (late 2018) to LG C8 (OLED55C8PLA) The LG TV just says "no signal". I'm connecting the Mac Mini to another TV just fine (1080p though). I'm using the same cable to connect a Windows 10 machine and it works over 4K just fine.

Is there some setting I need to set in order to make this work?
Here's what I had to do to make it work:


Upgrade WebOS to latest version
Switch to appropriate HDMI input (HDMI2 in my case)
Turn ON "ULTRA HD Deep Colour" for HDMI2 (pictured below)