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

Joined
Jun 6, 2020
Messages
58
Motherboard
Gigabyte Z390 Designare
CPU
i9-9900K
Graphics
RX 580
From OpenCore manual, disableiomapper section :
Note 2: Misconfigured IOMMU in the firmware may result in broken devices such as Ethernet or Wi-Fi adapters. For instance, an Ethernet adapter may cycle in link-up link-down state infinitely and a Wi-Fi adapter may fail to discover networks. Gigabyte is one of the most common OEMs with these issues.
 

CaseySJ

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Asus Z690 ProArt Creator
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RX 6800 XT
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CaseySJ

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Motherboard
Asus Z690 ProArt Creator
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i7-12700K
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Not sure if this VT-d business is only for those with modified TB firmware, but tried anyway. No wifi/ethernet for me with:

  • DisableIOMapper off and dart=0 removed.
  • VT-d enabled in bios.
  • 4x16GB ram @2666 MHz (can't do 3000 because usb disks get ejected during sleep).
For fun I tried without XMP too but same result.
Just to be clear, is your memory natively spec’d at 3000MHz, but you’ve disabled XMP and down-clocked it to 2666MHz?
 
Last edited:
Joined
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Messages
1,197
Motherboard
Gigabyte Z390 Designare
CPU
i9-9900KF
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RX 5700 XT
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  1. MacBook Pro
Yes because I tried down-clocking without success.
Could you please check if you ram is in this Z390 Designare RAM compatibility official list

"2 DIMM: Supports one pair of modules inserted into the same color slots as one pair of Dual-channel memory configuration. Install the modules into DDR4_A2, DDR4_B2 for better compatibility."
 

CaseySJ

Moderator
Joined
Nov 11, 2018
Messages
17,996
Motherboard
Asus Z690 ProArt Creator
CPU
i7-12700K
Graphics
RX 6800 XT
Mac
  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
  1. iOS
Could you please check if you ram is in this Z390 Designare RAM compatibility official list

"2 DIMM: Supports one pair of modules inserted into the same color slots as one pair of Dual-channel memory configuration. Install the modules into DDR4_A2, DDR4_B2 for better compatibility."
I have one of models in the inner red box. Will get the exact part number. My primary Z390 Designare has four 8GB modules (all G.Skill).

C9D53205-8FB8-44B2-A64D-B00ED56D0011.jpeg
 
Last edited:
Joined
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Gigabyte Z590 Vision D
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i7-11700K OC @ 5.2GHz
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RX 6800 XT
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Might the troubles you all are facing have anything to do with the BIOS version?

I haven’t tried any custom BIOSes, but I can confirm that I use VT-d with 4 8GB DIMMs with XMP on Z490 Vision D, and I don’t have any problems with the f5 BIOS.

But I had major problems with f20 and XMP on. USB disks were regularly being ejected during sleep. I downclocked the memory from 3200 to 2666, and that tended to help, but it wasn’t 100 percent foolproof.

I wonder if there’s a particular BIOS version you all should use?
 

CaseySJ

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Joined
Nov 11, 2018
Messages
17,996
Motherboard
Asus Z690 ProArt Creator
CPU
i7-12700K
Graphics
RX 6800 XT
Mac
  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
  1. iOS
Might the troubles you all are facing have anything to do with the BIOS version?

I haven’t tried any custom BIOSes, but I can confirm that I use VT-d with 4 8GB DIMMs with XMP on Z490 Vision D, and I don’t have any problems with the f5 BIOS.

But I had major problems with f20 and XMP on. USB disks were regularly being ejected during sleep. I downclocked the memory from 3200 to 2666, and that tended to help, but it wasn’t 100 percent foolproof.

I wonder if there’s a particular BIOS version you all should use?
Interesting. What is the make/model of your 8GB DIMM, and its native speed?

I tried various combinations of 16GB DIMMs on my Z490 Vision D that is also running stock F5, but side effects disappear when only one 16GB module is installed. Haven’t tried 8GB modules exclusively on that system yet.
 
Last edited:
Joined
May 15, 2020
Messages
1,197
Motherboard
Gigabyte Z390 Designare
CPU
i9-9900KF
Graphics
RX 5700 XT
Mac
  1. MacBook Pro
Might the troubles you all are facing have anything to do with the BIOS version?

I haven’t tried any custom BIOSes, but I can confirm that I use VT-d with 4 8GB DIMMs with xmp on z490 vision d, and I don’t have any problems with the f5 bios.

But I had major problems with f20 and xmp on. Usb disks were regularly being ejected during sleep. I downclocked the memory from 3200 to 2666, and that tended to help, but it wasn’t 100 percent foolproof.

I wonder if there’s a particular bios version you all should use…?
Have you checked Thunderbolt (TB-> Ethernet, or Antelope audio device), Ethernet/WiFi connections ?
 

CaseySJ

Moderator
Joined
Nov 11, 2018
Messages
17,996
Motherboard
Asus Z690 ProArt Creator
CPU
i7-12700K
Graphics
RX 6800 XT
Mac
  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
  1. iOS
From opencore manual, disableiomapper section :
Note 2: Misconfigured IOMMU in the firmware may result in broken devices such as ethernet or Wi-Fi adapters. For instance, an ethernet adapter may cycle in link-up link-down state infinitely and a Wi-Fi adapter may fail to discover networks. Gigabyte is one of the most common OEMs with these issues.
Will read that section of the OC manual soon, but meanwhile do they provide any information about the possibility of correcting IOMMU configuration?
 
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