Thank you all! I finished move to OpenCore and BigSur.
At the moment, fixed all issues actual for me except 4k@48Hz.
This config is a compilation of the config from the first post and
@slipanot config
What is added or changed:
1. alcid = 16 - need to work 2.1 speaker with subwoofer
2. alc-verb_jack_fix or ALCPlugFix-Swift - two methods for fix hotplug headphones jack
3. enabled SSD trim by deafult
4. changing igpu device property (4k@60Hz on Catalina, 4k@48Hz on Big Sur, HDMI, 2048Mb VRAM)
5. SSDT-DGPU.aml - Nvidia dGPU off
6. SSDT-BTNB.aml - Backlight fn buttons work together with patch:
change Method _Q80 to XQ80, pair with SSDT-BTNB.aml
change Method _Q81 to XQ81, pair with SSDT-BTNB.aml
7. Using MacBookPro13,2 (required for working HDMI and Big Sur correctly and smoothly (BigSur had a lot of lags with MacBookPro13,3)
Not used and not tested by me:
1. Built-in card reader (before I used Sinetek-rtsx.kext but stability and speed did not suit me)
3. DRM on Safari
Also I disabled SMCDellSensors.kext as it causes sound lags for me.
If you have Secure Boot Violation error read this post:
Hiiiii @slipanot. I created my account on this forum only to say thank u so much for your job. I downloaded EFI Folder and works for me. You said your graphics card has problems, I had same problem (inccluded HDMI and sound). How to resolve: OpenCore Configurador > DeviceProperties > Remove...
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