Custom Resolution Utility (CRU)

[ToastyX]

(01-19-2021 11:43 PM)kolang-kaling Wrote:  hello guys, i wanna ask about weird issue with my GPU (HD7870).
so, i connecting the GPU with PC monitor via HDMI when it tun on and boot logo show up, the display detect as "1920x1080 60Hz", but when entering the login screen it will change and detect as "1080p 60Hz". I think the GPU detect the PC monitor as LCD TV.

i have raspberry, and if this happen i easily change the setting 'HDMI group' from CEA to DMT. so i need tutorial how to change that in windows? i already download the latest CRU but i dont know what to do. thanks

CEA and DMT use the same timing parameters for 1920x1080 @ 60 Hz, so I don't see how that makes a difference. It's probably sending a DVI signal while booting, then switches to HDMI when the driver loads. Also, DVI only supports RGB, while HDMI supports RGB and YCbCr, but you can set the pixel format in Radeon Settings. Is there a problem with the HDMI signal? Deleting the "HDMI support" data block in the CTA-861 extension block will make it send a DVI signal.