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

[Inqnuam]

@Inqnuam, do you also see the green dots for built-in Ethernet ports and Fenvi WiFi (not Thunderbolt Ethernet)?

Of course sir!

But I'm on latest OC Beta:
Here is my Report Archive with ready to boot OC 0.7.1 EFI (kexts and all up to date)

 

[CaseySJ]

Of course sir!
View attachment 522963


But I'm on latest OC Beta:
Here is my Report Archive with ready to boot OC 0.7.1 EFI (kexts and all up to date)

This is wonderful. Now you have:

• A1 = 8GB
• B1 = 8GB
• A2 = 4GB

Do you have another 4GB module in order to test this configuration?

• A1 = 8GB
• B1 = 8GB
• A2 = 4GB
• B2 = 4GB

Was it necessary to down-clock the memory to 2666MHz?

 

[Inqnuam]

This is wonderful. Now you have:

• A1 = 8GB
• B1 = 8GB
• A2 = 4GB

Do you have another 4GB module in order to test this configuration?

• A1 = 8GB
• B1 = 8GB
• A2 = 4GB
• B2 = 4GB

Unfortunately I don't
Will try to buy one on Monday at a local tech store

 

[Inqnuam]

Was it necessary to down-clock the memory to 2666MHz?

The 4GB memory I found is 2666MHz, BIOS? down-locked them all to 2666Mhz,
Didn't checked yet if my custom confi XMP Profile 1 is still enabled or not
Will check that right now

EDIT:
Yes XMP Profile 1 is now disabled

 

[taylorsyn]

** Experiment Update #3 **
AppleVTD Side-Effects and Mitigation Strategies​

Current Situation:
To extend Thunderbolt compatibility to Antelope Audio, Apple TB-to-Gigabit Ethernet Adapter, and some other devices, we have found that enabling VT-d is the key.

This can be done on any Intel-based Hackintosh and does not require any special or modified BIOS. To enable VT-d, we need to do the following:

• Enable VT-d in BIOS
• In OpenCore config.plist, uncheck DisableIoMapper (in the Kernel Quirks section)
• In OpenCore config.plist, remove "dart=0" from Boot-Args if present (in the NVRAM section)
• After rebooting, run IORegistryExplorer to see whether a new device named AppleVTD appears near the top of the list. This confirms that VT-d is enabled.

@CaseySJ Just wanted to report that X299 Gaming 7 the built in ethernet stopped working. Any suggestions on what to try?

 

[CaseySJ]

Update on Gigabyte Z490 Vision D:

With one 16GB DIMM (in A2) there are no side-effects with AppleVTD. Everything works.

These configurations were also tested, but they result in WiFi and Ethernet not connecting:

• 16GB by 2
• 16GB by 3
• 16GB by 4
• 16GB by 2 and 8GB by 2

 

[CaseySJ]

@CaseySJ Just wanted to report that X299 Gaming 7 the built in ethernet stopped working. Any suggestions on what to try?

As you can see, the number and capacity of memory DIMMs make a difference.

• How many DIMMs are installed currently?
• And what is the capacity of each one?
• You have an Intel HEDT system (X299), which version of macOS are you running?
• And which of the two Ethernet ports fails?
• Please post a screenshot of System Information --> Ethernet Cards with both cards selected (as you can see in my screenshot directly above)

 

[Inqnuam]

Update on Gigabyte Z490 Vision D:

With one 16GB DIMM (in A2) there are no side-effects with AppleVTD. Everything works.

What a puzzle! I can't follow the logic with this Apple VT-d

 

[CaseySJ]

Yep both ports work. The ASUS Sage/10G has a Intel X550-AT2 so I modified the EEPROM to work with SmallTree drivers

SMBIOS: MacPro7,1

BIOS changes: None - Can't seem to find VT-D in the ASUS X299 BIOS
config.plist changes: DisableIoMapper (false)

• AppleVTD Enabled
• DMAC
• 4 DIMMS (4 x 16GB @ 3200)
• Broadcom BCM943602CDP (Wifi + Bluetooth work)
• Both onboard Ethernet ports work - Intel X550-AT2 with SmallTree8259x.kext
• No Thunderbolt card (Will be getting a Titan Ridge to flash)

On my Asus X99 Deluxe II, VT-D is located here:

• Advanced → System Agent Configuration → Intel VT for Directed I/O (VT-d)

 

[CaseySJ]

If you'd like to follow or re-trace the key milestones of this Experiment, simply look here in Post #1: