unable to enter the system after replacing the motherboard

[dmls]

Hello everyone, I have a problem. After replacing MSI A320 with MAXSUN b550m, Big Sur can't boot normally. I have added ACPI according to the 'OpenCORE Install Guide', but it doesn't work

 

[Aluveitie]

Switching from A320 to a B550 you basically have to redo your entire EFI

 

[dmls]

Switching from A320 to a B550 you basically have to redo your entire EFI

right ? on no!

 

[Aluveitie]

ACPI paths are usually different between different models with the same chipset, sometimes even between different BIOS versions. Same for USB ports.
CtlnaAHCIPort.kext and XHCI-unsupported.kext are not needed on B550.

 

[dmls]

ACPI paths are usually different between different models with the same chipset, sometimes even between different BIOS versions. Same for USB ports.
CtlnaAHCIPort.kext and XHCI-unsupported.kext are not needed on B550.

"Ctlnaahciport. Kext" and "xhci unsupported. Kext" were added later in the test. He was like this when he didn't join again

 

[dmls]

ACPI paths are usually different between different models with the same chipset, sometimes even between different BIOS versions. Same for USB ports.
CtlnaAHCIPort.kext and XHCI-unsupported.kext are not needed on B550.

I downloaded a MSI b550m EFI from GitHub, and the same problem occurred

 

[Aluveitie]

Then verify your BIOS settings

 

[dmls]

Then verify your BIOS settings

BIOS settings is ok

• CSM: disabled
• Fast boot: disabled
• Above 4G decoding: enabled
• RezisableBAR: disabled

 

[Aluveitie]

Please provide you full hardware list, that makes it easier to help. Some older GPUs don't handle Above 4G Decoding well for example.

Maybe this is of help: https://dortania.github.io/OpenCore...tion-begins-previous-shutdown-hpet-hid-legacy

 

[dmls]

Please provide you full hardware list, that makes it easier to help. Some older GPUs don't handle Above 4G Decoding well for example.

Maybe this is of help: https://dortania.github.io/OpenCore...tion-begins-previous-shutdown-hpet-hid-legacy

CPU : AMD Ryzen 5 3500X
Motherboard : MS-TX B550M
RAM : 16GB (2 x 8GB) Cuso 2600
GPU : Asus R9 270 2GB
WiFi & Bluetooth: Ax200

 

[Aluveitie]

With such an old card better disable Above 4G Decoding and add the npci=0x2000 boot arg

 

[dmls]

With such an old card better disable Above 4G Decoding and add the npci=0x2000 boot arg

Thank you. I'll try

 

[dmls]

It may not work

 

[OG Deltwin]

Hello everyone, I have a problem. After replacing MSI A320 with MAXSUN b550m, Big Sur can't boot normally. I have added ACPI according to the 'OpenCORE Install Guide', but it doesn't work

You need to recreate your EFI folder obv... it's a different MB.

 

[OG Deltwin]

It may not work

Try adding in your efi folder: SSDT-AWAC.aml

 

[AudioGod]

Try adding in your efi folder: SSDT-AWAC.aml

Erm…….
Thats not going to work as you can’t use a Intel ssdt for a legacy real time clock fix on a AMD setup.
That’s just a NoNo I’m afraid.

 

[OG Deltwin]

Erm…….
Thats not going to work as you can’t use a Intel ssdt for a legacy real time clock fix on a AMD setup.
That’s just a NoNo I’m afraid.

Erm... I have an amd setup and that aml works perfectly for me..

 

[AudioGod]

Erm... I have an amd setup and that aml works perfectly for me..

It’s not doing anything I bet. It’s just sitting in There. Check your io reg and see for yourself.
your using a SSDT that I promise you is doing zero, it’s made for Z390 and Z490 boards. Even the code inside the SSDT points to Intel pathing.

 

[OG Deltwin]

It’s not doing anything I bet. It’s just sitting in There. Check your io reg and see for yourself.
your using a SSDT that I promise you is doing zero

Kkk