Failure to boot with RX 6600 - user error or incompatible GPU about gigabyte-z590i-vision-d-11900k

[sash11]

Yes, you should remove the AML file for sure as it is not needed for RX6600.

[nikko-bytes]

So far so good with Ventura Beta 6.

[SchmockLord]

Thanks for sharing this here!

[sash11]

what is device-id of this card? is it supported OOB? If so, try to add boot argument agdpmod=pikera.
You definitely do not need the a fix for RX6900XT that requires spoofing device-id.
Also reset your nvram.

[nikko-bytes]

I understand RX6600 is supported from the Dortania guide
It is running with bootarg agpdmod=pikera

So I should remove this:

Comment
PCI-Bridge for RX 6900 XT Card
Enabled

Path
SSDT-BR0-6900XT.aml

and the SSDT-BR0-6900XT.aml

\VEN_1002&DEV_73FF&SUBSYS_E4471DA2&REV_C7\6&16822204&0&00000008
Device ID - 73FF
Subsystem vendor - 1002
Manufacturer - 1DA2

I've tried resetting the nvram as well.

[nikko-bytes]

No success as yet, I'll revert back to it in the morning. thx

[nikko-bytes]

Update
Success but not 100% of boot attempts. For some reason it boots on the second attempt - strange... This is where I'm currently at:

• removed SSDT-BR0-6900XT and the reference to it in the config.plist (the AMD RX570 worked with this in place)
• added BootArg shikigva=128 - which I didn't try last night
• verbose (-v) to see where things were going off track

On the classic Mac Pro forums, they suggest flashing the BIOS of this card. It was to be the next step if I did not manage to get it working. Glad this wasn't required.

With Device ID = 73FF, where and how would that be entered into config.plist? Should I change this part of the config.plist do you think?
DeviceProperties

Add

PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)

device-id
v3MAAA==
shikigva
128

Thanks for the tips.

[nikko-bytes]

Update, resolved laggy and slow performance by changing the Device ID to FF731002 for RX6600 GPU. Chris' build Gigabyte-Z590i-Vision-D-11900k-26.
No further action required

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