ASUS ROG Maximus Z790 Hero i9-14900K stuck booting OC

[mthayer104]

Hello Everyone.

I wanted to see if anyone has any clues for what I should be looking into.

This is my 6th build over the years and these are the specs:

Asus Z790 ROG Maximus Hero
Intel i9-14900k
64GB DDR5
2TB WD Black SN850X NVMe
XFX AMD Radeon RX6800
Open Core is 0.9.6
All Kext and SSTD’s are the most recent.

If I plug the monitor into the board hdmi slot, I load and can install Sonoma.
If I plug the monitor into the graphics card, it always stops somewhere in the ACPI loading (see image).
I have tried other graphics cards that I pulled out of working builds, for example MSI AMD Radeon RX 6600, and the same thing. Stops the same place.
I have tried a multitude of configurations, from bare bones kext and SSTD’s to everything. I have also set the bios to graphics at Auto, Peg, PCI, and still the same.
My bios is: load optimized defaults, then disabled: VT-d, Secure Boot, CSM support. Enabled Above 4G, EHCI/XHCI Hand-off, and set boot to Other OS.
I have even tried it with not disabling VT, Secure Boot, etc. Always the same.
I have tried many boot args, -rad24, -wegnoigpu, -wegbeta, etc.
At this point, I think I have created 20+ EFI configurations testing to see if anything will get it past this. Nothing.

Anyone have suggestions on what I should focus on?

My EFI is attached.

Thank you for any assistance, it is greatly appreciated!

 

[P1LGRIM]

Anyone have suggestions on what I should focus on?

 

[mthayer104]

Yeah, I have been working on that. What is interesting, is I get the same error when plugged into the board, but it loads.
Thank you for looking at this!

 

[goodfellaz]

Any luck on this? I'm also getting stuck booting an i9-14900k on ASUS ROG Maximus Z790 Dark Hero. Boots with onboard HDMI but hangs with 6950XT.....

 

[rathan]

I have made modifications based on your EFI, update OpenCore 0.9.7，try it

 

[SiliconSoul]

did either of you get this working? i was looking at getting the same CPU.

 

[mthayer104]

Yes, I got it working.

 

[UtterDisbelief]

Yes, I got it working.

Good news.

Would be great if you could explain how, for the benefit of others.

 

[dehjomz]

To boot any Intel CPU newer than comet lake, we must Change the cpuid in open core to that of a supported x86 processor. As we know, Apple has not used any of the recent Intel lakes in its products.

 

[mthayer104]

Good news.

Would be great if you could explain how, for the benefit of others.

It was in the Bios settings. I had Resizebar enabled. Once disabled, it started fine.
Disable

• VT-d
• CSM Support
• Resizebar
• Trusted Computing

Enable

• Above 4G decoding
• EHCI/XHCI Hand-off
• OS type: Other OS, Secure Boot Mode to Standard
• Extreme Memory Profile to "XMP"
• Enable Thunderbolt.