Custom Resolution Utility (CRU)

[ToastyX]

(09-29-2022 11:35 PM)semaphore Wrote:  Hi, I was wondering if someone could help me out with the following.

I am using an EDID emulator to emulate my LG CX display on a headless PC. The problem is that the emulator is HDMI 2.0 compliant so the native resolution is set to 4K 60Hz @ 4.2.0 when I connect it to my RTX 3080 Ti. I am hoping to modify the EDID manually to default to full chroma (10b) and a higher refresh rate (90 or 120Hz). I know that I can't do this directly in the "Detailed Resolutions" section, but need to create a separate one as part of an "Extension Block". There are multiple options I can select here (CEA-861 or DisplayID 1.1/2.0) so I am not sure which one to pick. Regardless of which type of extension block I pick, I cannot select the created resolution in Windows nor Nvidia Control Panel. I also don't see how I can make this resolution the native one. Does anyone know how to fix this?

Please note that I am aware that there are physical limitations to the HDMI 2.0 connection itself. The only thing I really need the EDID profiles for is to be able to stream my games and desktop in that quality (4K 120 Hz HDR)

You can just copy the EDID from the LG to the EDID emulator, but HDMI 2.0 can only support 3840x2160 @ 60 Hz at 8 bpc with RGB/YCbCr 4:4:4. 120 Hz would only be possible with YCbCr 4:2:0. Normally these are defined as TV resolutions in a CTA-861 extension block.