<< Solved >> Can't Enable 60Hz on 4K Monitor

[zzmattiazz]

Hi,I Hope you can help me....
I bought a 4k monitor a while ago but after a lot of attempts I can't enable 60Hz on my hackintosh.
My Intel HD 4600 fully support 3840x2160 at 60Hz only on Display Port, I use Windows 10 on that resolution and it works perfectly.
Now I tried to add the frame buffer patch on my config.plist and I achieved a functionally 4k at 30Hz, but it's not as smooth as I want.
Can someone help me please? I attach my EFI.
Sorry for the bad English but I'm italian, thank you.

 

[jaymonkey]

@zzmattiazz,

You must use the -cdfon boot argument to enable the WEG pixel clock patch for a IGPU to run at 4K.
You can also (optionally) increase IGPU VRAM to 2048MB.

Both of these options are covered in the "High DPI Displays & Dual Monitors" section of the Lilu + Plug-in's guide :-

An iDiot's Guide To Lilu and its Plug-ins

An iDiot's Guide To Lilu and its Plug-in's Last Update: 22nd Jan 2021 (Add note about OpenCore config.plist modifications) About this Guide Note: This guide was written when Clover was the boot loader of choice as such the config.plist examples in this guide are mostley Clover specific ... if...

www.tonymacx86.com

Cheers
Jay

 

[zzmattiazz]

Thank you very much, I just needed to add -cdfon on efi bootloader and magically it worked smooth at 60Hz.
Thank you again