TV connection problems in Deep Colour mode
TV connection problems in Deep Colour mode
Hey there! I'm facing an issue with my new LG smart TV. I connected it to my PC using a 10-meter HDMI cable and a Palit RTX 4080 graphics card. When I use the standard HDMI connection, it works fine—just a regular display without any extra settings. However, when I enable the "Game optimizer" feature, it activates "LG HDMI Deep Colour," but then no signal reaches the TV. The PC keeps trying to send data, but it fails repeatedly. I’m wondering if this is due to an incompatibility in Windows 11 or just the cable itself. Does the cable need to support HDR or Deep Colour mode? I also use the same cable for other devices like a Nintendo Switch, and it works fine there.
When it functions without deep color, the key specifications are clear: resolution, refresh rate, bit depth, and chroma subsampling. You're right about the game mode—LG transmits EDID data indicating 4K at 120Hz compliance, but a passive cable likely prevents that from being fully realized. For troubleshooting, identifying the exact TV model helps confirm compatibility.
I found the details you're looking for on the LG product page. Check the specifications section for more info. If you need further guidance, let me know!
It seems the problem isn't resolved yet. It looks like the device might need a proper cable, but I'm not sure if it supports 4K60Hz or Deep Color.
Based on my experience (LG C2 on PC) using these 4K 120Hz TVs, the cable really matters. I wouldn't even attempt to force 4K with HDR + VRR at 10 or 12-bit using a generic cable. Opt for a trusted brand that carries an official "Ultra High Speed" certification.