[SOLVED] Unable to Fix screen brightness control on Razer Blade 15 2020 Base

[hoaug]

Solved by myself:

 

Make sure the IGPU's ACPI Path is correct in SSDT-PNLF. When you're sure of that. Please follow the instructions below and Inject EDID. And.. the brightness will work

https://github.com/5T33Z0/OC-Little-Translated/tree/main/11_Graphics/Inject_EDID


Hello. I'm back to that damn error of not being able to control the screen brightness. I don't understand why I'm so unlucky that every time I switch to a new Laptop I alway have that error...

Here is my Laptop:

 

Model: Razer Blade 15 2020 Base

CPU: i7-10750H
iGPU: is it UHD630 

dGPU: RX2060 ( I disabled it by SSDT )

SSD: Crucial P3 1TB

 

Here's what I tried :

- First, I used SSDTtime Tool to create SSDT-PNLF and PNLF to XNLF Rename Patch. But the brightness control doesn't work

- Next, I tried using the SSDT-PNLF prebuild from Opencore but that didn't work either

- From previous experience. I tried deleting SSDT-NoHybGfx.aml and replacing it with boot-args -wegnoigpu but the result is still the same

- I think problem due to SMBIOS so I also changed back and forth to SMBIOS MacBookPro16,3, MacBookPro16,1 and finally MacBookpro16,4 but not working

 

I really don't understand what the hell is wrong with my machine. I check DSDT.aml and see that have a Device name GFX0 but why SSDT-PNLF not work ( or is that GFX0 device just fake ? )

 

I don't know what the problem is. below is my config.plist at the Device Properties section:

And finally EFI and DSDT and also my ioregistry. If you guys know how to fix it, please help me. I'm sorry I've posted so many posts about Fixing brightness but I'm really helpless with it. I'm so unhappy. Thank you very much

 

DSDT.aml
 

EFI and ioregistry:

 

https://drive.google.com/drive/folders/1B4cTkO7V9hY9TSsZ5N4vDpVDGY2N8iJj?usp=share_link

Edited July 19, 2024 by kinhhoang161
Solved