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

CaseySJ

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Hi @CaseySJ !
I have a clover + mojave. I want to conveting to OC + bigsur. Do i have clear all EFI old and MacOS partion old? thank you!
Please see Quick Reference spoiler at the top of Post 1. After doing Step 1 and Step 2, you can install Big Sur directly from Mojave (System Preferences --> Software Update). Always make a full bootable backup first!!

Screen Shot 2021-07-06 at 3.58.02 AM.png
 

CaseySJ

Moderator
Joined
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Messages
17,192
Motherboard
Gigabyte Z490 Vision D
CPU
i5-10400
Graphics
RX 580
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  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
  1. iOS
Good morning all,
i tried to modify the DMAR ssdt, and now all the network interfaces and the antelope interface are working with four 16Go DIMMs in my z390 Designare. need to do further testing but everything seems to be ok for now. for those who want to give a try, here is the process:

Bios: Vt-d enable

Opencore:
  1. copy this Attached SSDT-DMAR.aml in your ACPI folder
  2. modify your config.plist
Boot Arguments -> Remove "dart = 0"
Kernel Section -> Uncheck "DisableIoMapper"
ACPI Section - Delete -> add this entry

View attachment 523829

ACPI Section - Add -> add this entry
View attachment 523830
Holy $&#&$#!! You did it! It works on Big Sur!

Now we have AppleVTD enabled with more than 16GB memory and no WiFi/Ethernet issue!

Z390 Designare:
Screen Shot 2021-07-06 at 4.12.43 AM.png


What was the thought process that led to this solution?
 
Joined
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Hi @Elias64Fr ,
Yes, same memory
in this ssdt I just removed the reserved memory regions
I'm now on holiday and I can't test this. Anybody else tried this on z390? Can someone explain what "reserved memory regions" is for? What consequences can be if its taken out of DMAR?

Can be a solution to allocate less memory to "reserved memory regions"?
 
Last edited:

CaseySJ

Moderator
Joined
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Messages
17,192
Motherboard
Gigabyte Z490 Vision D
CPU
i5-10400
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RX 580
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  1. MacBook Air
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  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
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And it works on Z490 Vision D as well, with modified SSDT-DMAR. Please visit Z490 Vision D thread for details and downloads.

Screen Shot 2021-07-06 at 4.33.33 AM.png
 

CaseySJ

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Joined
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Messages
17,192
Motherboard
Gigabyte Z490 Vision D
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i5-10400
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RX 580
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  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
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** Enabling AppleVTD on Z390 Designare with No Impact to WiFi/Ethernet **
Credit: @yosoyoco


Finally we are able to enable AppleVTD without incurring the side effects of broken WiFi and Ethernet. Thanks to @yosoyoco for solving the final piece of the puzzle!

Steps:
  • BIOS --> Enable VT-d
  • OpenCore --> Uncheck DisableIoMapper from Kernel Quirks
  • OpenCore --> Remove dart=0 from boot-args if it exists
  • OpenCore --> Add SSDT-DMAR.aml (attached) to ACPI --> Add section as shown
  • OpenCore --> Delete DMAR from ACPI --> Delete section as shown
  • Reboot
Once this has been more fully tested I'll incorporate it into next month's OpenCore 0.7.2 release.

Warning:
  • The attached SSDT is only for Gigabyte Z390 Designare only.
Screen Shot 2021-07-06 at 4.53.13 AM.png
Screen Shot 2021-09-15 at 9.56.52 AM.png
Screen Shot 2021-07-06 at 4.12.43 AM.png
 

Attachments

  • SSDT-DMAR.aml
    104 bytes · Views: 173
Last edited:
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Quick question: is « remove DMAR » the same in OC as « drop DMAR » in Clover? For future reference, in case I wanna keep Clover and upgrade to Catalina or Big Sur (even possible with Clover??).

Thanks,

Patrice
 
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The attached SSDT is only for Gigabyte Z390 Designare only.
I don't think so. I'm now on a MacBook Pro with the same DMAR. I think the SSDT-DMAR you propose is for all rigs or most of all (at least z390).
 

Attachments

  • Genuine MacBook Pro - DMAR.aml
    136 bytes · Views: 43

CaseySJ

Moderator
Joined
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Messages
17,192
Motherboard
Gigabyte Z490 Vision D
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i5-10400
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RX 580
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  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
  1. iOS
I don't think so. I'm now on a MacBook Pro with the same DMAR. I think the SSDT-DMAR you propose is for all rigs or most of all (at least z390).
I cannot vouch for that. Every BIOS has a slightly different DMAR. If you compare the one here with the one I posted in Z490 thread, they are different. Whether those differences translate to real world issues, we don't know (especially in Windows and Linux). It has only been a few minutes. To be safe, therefore, I recommend using native DMAR tables with the Reserved Memory regions removed.
 
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