Black Screen after a few seconds of Installer.

[enolic]

Hello. A few days ago i installed macOS Catalina to directly update from inside the macOS Monterey, but after reboot the screen was black.

So i decided to install from the beginning the Olarila Monterey. I boot to macOS Installer but when installer appeared, after a few seconds the screen turned to black again ( HDMI - No signal)

 

EDIT: im on skylake (i3 6300). I have a dGPU on MOBO but now i selected from BIOS to run with only iGPU. (I will set up the mac to run with iGPU and windows with dGPU after a successful installation of Monterey

config.zip

Edited March 20, 2022 by enolic

[MaLd0n]

use -igfxvesa for installation

[enolic]

ok the installer appears normally with -igfxvesa. Is the -gfxvesa option is not for after the installation, is it? Because as i said i want to set up macOS with iGPU and dGPU with windows.

 

Thank you very much for your help  

I will update in a few minutes if something happened.

[MaLd0n]

use this video patch

Quote

<key>PciRoot(0x0)/Pci(0x2,0x0)</key>
            <dict>
                <key>#framebuffer-patch-enable</key>
                <data>AQAAAA==</data>
                <key>AAPL,ig-platform-id</key>
                <data>AAASGQ==</data>
                <key>device-id</key>
                <data>EhkAAA==</data>
                <key>framebuffer-unifiedmem</key>
                <data>AADw/w==</data>
            </dict>

 

[enolic]

2 hours ago, MaLd0n said:

use this video patch

 

This is going to Device Properties? 

 

PS: I manage to install Monterey update, but now my HD530 graphics have 7MB Video Memory

 

edit: i find the method to add the patch. I'm trying it right now and I'll update the post soon

Edited March 20, 2022 by enolic

[enolic]

I tried the patch you said before but still the HD530 memory is 7MB

[MaLd0n]

u need remove -igfxvesa and reset nvram with iMac17,1 smbios

[enolic]

i removed the -igfxvesa but the VRAM is still 7MB. I didnt try to reset nvram. The SMBIOS is for iMac18,1. 

So I'll try your suggestions and I'll update soon.

 

I changed the SMBIOS to iMac17,1, I reset the NVRAM but nothing changed. The VRAM still is 7MB ?

[MaLd0n]

PROCESSOR is skylake(6) or kabylake(7)?

[enolic]

skylake. The cpu is the i3 6300

Do you want to share the config?

oh. I see in System Information that says Intel i5, but i'm on i3 6300 

Edited March 20, 2022 by enolic

[enolic]

I decided to reinstall the macOS Monterey with iMac17,1 SMBIOS to see if that may fix the problem with 7MB VRAM. 

Unfortunately the problem still exists. I tried the patch but... nothing... 7MB VRAM ?

[MaLd0n]

https://easyupload.io/j28tc2

[enolic]

Boot loop if I choose to boot the installed OS on HDD, 

Kernel Panic if I choose to install macOS.

 

I removed the extra kexts of ethernet, and I keep mine. But unfortunately does not help. 

[MaLd0n]

check ur procedure, is not common

monitor need stay connect in. IntelHD and set to primary gpu on. bios/uefi setup

[enolic]

monitor is always connected to mobo via hdmi. I set up from bios to choose igd as primary gpu. On mobo, i have installled the NVIDIA 1060 but i included the -wegnoegpu at boot args to disable the dGPU.

 

 

edit: for some reason memory on cpu was set up 32MB, but I had change that. Anyway, i change it again to 64MB, so the with the EFI you gave me i successfully boot up with full VRAM.

 

Thank you very very much!! You are a hero!