- Nov 11, 2018
- Gigabyte Z490 Vision D
- RX 580
- Classic Mac
- Mobile Phone
Ah, your PCI bus base path is PC00 instead of PCI0. Please try the attached modified Thunderbolt SSDT. Ensure that SSDT-DTPG.aml is still enabled.@CaseySJ I did not have SSDT-DTPG.aml in my OC/ACPI folder, but I had tried it previously as I recall.
I used your attached version, rebooted and Big Sur still would not boot.
We got a bit further though - see image.
View attachment 503745
Posting IOREG with eGPUs connected (from Catalina Backup) along with this screenshot of System Information --> Thunderbolt
View attachment 503746
Also posting my DSDT.aml if it helps!