Can boot into Big Sur only from my Nvidia card - need help with iGPU UHD630

[shasoosh]

Relevant Specs: Z390 Aorus Ultra & 9900K

I have a running Big Sur OS that seems to working fine apart from the iGPU.

If iGPU is enabled via BIOS I will get a black screen after the apple logo.

These are the final lines in my log:

27:174 00:004 AAPL: #[EB.B.WFDW|!WF] Err(0xE) 0
27:179 00:004 AAPL: #[EB|LOGT] 2020-11-22T14:13:58
27:184 00:005 AAPL: #[EB|LOG:EXITBS:START] 2020-11-22T14:13:58

I've tried following this: https://dortania.github.io/OpenCore...rnel-issues.html#stuck-on-eb-log-exitbs-start

Which talks about [EB|LOG:EXITBS:START] but couldn't find a solution that works.

For testing purposes I've disabled my iGPU from the bios and was able to boot into the OS just fine using my 2070 but without drivers (obviously).

Enabling my iGPU again via bios and tried PciRoot(0x0)/Pci(0x2,0x0) with 07009B3E , 00009B3E , and a bunch more but got nothing.

I've uploaded my EFI folder here if someone care to take a look:

https://github.com/Shasoosh/Z390-Aorus-Ultra-9900K

Any help would be appreciated.

 

[trs96]

Disabling iGPU from the bios will boot into the OS just fine using my 2070 but without drivers

How do you plan on running Big Sur with no 2070 drivers ? The majority of people here use a supported AMD GPU instead of relying on the UHD630 gfx which are not great.

 

[shasoosh]

The change to 2070 was for testing purposes and to try to go over the black screen. My intention is to run Big Sur using my iGPU which is UHD630.

I've edited the initial post to make it clearer. I've been running an hackintosh a few years now. I'm aware of the all nvidia drivers conundrum.

 

[trs96]

This is the best guide to read to help getting UHD 630 working on a Z390 system.

[GUIDE] General Framebuffer Patching Guide (HDMI Black Screen Problem)

General Framebuffer Patching Guide using Hackintool Please do not quote this guide in its entirety. Post a link instead. 15 Jan 2019: Intel FB-Patcher has been renamed to Hackintool. 19 Jan 2019: Guide overhauled. Please be aware of possible HDMI hot-plug issues. After boot you may have to...

www.tonymacx86.com

 

[shasoosh]

Thanks. Reading through this guide i'm baffled with step 3:

3. Your computer must be booted up with proper graphics Device ID and Platform ID values. These can be specified easily in Clover. Choose either Option 1 or Option 2 below.

That's what I'm trying to figure out. I don't know these. Also, I'm not using Clover.

 

[shasoosh]

This is the best guide to read to help getting UHD 630 working on a Z390 system.

[GUIDE] General Framebuffer Patching Guide (HDMI Black Screen Problem)

General Framebuffer Patching Guide using Hackintool Please do not quote this guide in its entirety. Post a link instead. 15 Jan 2019: Intel FB-Patcher has been renamed to Hackintool. 19 Jan 2019: Guide overhauled. Please be aware of possible HDMI hot-plug issues. After boot you may have to...

www.tonymacx86.com

I ended up using one of the patches users posted there that is somewhat similar to my moatherboard and now I'm able to boot into Big Sur using my iGPU.

Thanks @trs96 for the great reference!