[SUCCESS] Gigabyte Designare Z390 (Thunderbolt 3) + i7-9700K + AMD RX 580

[imcalledandy]

The EFI configuration looks fine. Does Big Sur boot if you disable the Thunderbolt SSDT in config.plist?

Right now my suspicion is that you may be missing a SSDT that is necessary for Big Sur, but is unrelated to Thunderbolt.

No. I tried booting with Thunderbolt disabled in the BIOS and booting without the TB SSDT. No luck.

Perhaps it is something else.

Just tried booting again and it stopped here.

 

[vitoludo]

Mother of jesus and lord almighty @CaseySJ, you F did it. It flawlessly work, I tried a Thunderbolt hard drive and it mounts and also network with another hacktintosh using a Titan Ridge and it works!

I get the same speed as using the 10Gb Ethernet that I was using before, but anyway it works! You son of Thor!!!

Edit: Thank you very much

 

[CaseySJ]

No. I tried booting with Thunderbolt disabled in the BIOS and booting without the TB SSDT. No luck.

Perhaps it is something else.

Just tried booting again and it stopped here.

I think you're missing the attached SSDT, which fixes the problem shown below:

Please add the attached SSDT to OC/ACPI folder and to config.plist and try booting once again.

 

[CaseySJ]

Mother of jesus and lord almighty @CaseySJ, you F did it. It flawlessly work, I tried a Thunderbolt hard drive and it mounts and also network with another hacktintosh using a Titan Ridge and it works!

I get the same speed as using the 10Gb Ethernet that I was using before, but anyway it works! You son of Thor!!!

Edit: Thank you very much

Awesome, glad to hear it!! Will add this to the Alpine Ridge Repository.

 

[vitoludo]

Awesome, glad to hear it!! Will add this to the Alpine Ridge Repository.

just to make sure and I don't know if makes a difference, you named the file that you sent me GA-X99-SLI, but the motherboard I am using is a GA-X99P-SLI (note the P), seem this one has the Thunderbolt chip onboard and the one without the P has the pin header to connect a PCI Thunderbolt card. I am not sure if that matters.

 

[CaseySJ]

just to make sure and I don't know if makes a difference, you named the file that you sent me GA-X99-SLI, but the motherboard I am using is a GA-X99P-SLI (note the P), seem this one has the Thunderbolt chip onboard and the one without the P has the pin header to connect a PCI Thunderbolt card. I am not sure if that matters.

Thanks for pointing this out. I've made the changes to the Alpine Ridge Repository. It affects the name only, but not functionality.

 

[CaseySJ]

I think you're missing the attached SSDT, which fixes the problem shown below:

View attachment 503766

Please add the attached SSDT to OC/ACPI folder and to config.plist and try booting once again.

@imcalledandy

If Big Sur still fails to boot, please replace the previous SSDT-RTC0-RANGE.aml with the modified version attached here. Because your DSDT already contains a RTC._STA method, the previous version may not work.

 

[vitoludo]

Hey @CaseySJ,
just one last thing, I can't find any information about the specific settings for Thunderbolt on this BIOS, but so far I found similar names, but the question is, do you happen to know if I have to increase the Reserved Memory (now at 256) or the Prefetchable Memory (now at 32)?
Also for future reference if someone is reading this to add it in their systems if I change the PCIe Cache-line Size to other that 32 it does not work.

 

[imcalledandy]

@imcalledandy

If Big Sur still fails to boot, please replace the previous SSDT-RTC0-RANGE.aml with the modified version attached here. Because your DSDT already contains a RTC._STA method, the previous version may not work.

@CaseySJ it failed to boot so trying this now - thank you for your continued help and patience!

 

[jrhillma]

Glad to hear it. Welcome to the cutting edge...

Not sure if it's confirmation bias, just me, or what...but Big Sur seems snappier than Catalina did. And the graphics (well, the text on screen) are just a bit sharper. I'm going with confirmation bias