manhhungdoan

I tried your way out and it works. however, built-in screen flickering after I plugged in HDMI and It must be reboot sys before it will be fixed.

My laptop has touchscreen. When connecting HDMI output, external display works but internal LCD goes dark. How to fix it?
Here are my IOReg and EFI files: IOReg and EFI files

thanks. My hackintosh is working very well

great, it works really well. thank you so much!

It doesn't work. Must I try all versions of I2C kext?

I sincerely apologize. My English is not well.

IOReg is here. Hope you can help me!

https://drive.google.com/drive/folders/1g6m-zZTwa8luUnAD-Iyr4HTfCM5lBTlJ?usp=sharing

My dell e5570 laptop is running BigSur using Opencore. Thanks!