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

Yes, that’s where I have it. Was the modified BIOS you’re running intentionally changed to allow for the Fenvi card to work? Or is that a behavior you’re seeing as a result of the previous work?
This is exactly what we're trying to find out with @yosoyoco. On the same Z390 Designare, enabling Vt-d has disabled his Ethernet and WiFi. On my Z390 Designare with the new BIOS, enabling Vt-d does not affect Ethernet or WiFi.

The BIOS was not explicitly modified to allow for the Fenvi card to work. Instead, it was modified to include:
  • Apple Thunderbolt PEI/DXE drivers
  • AppleVTD DXE driver
 
Do I risk screwing up the backup by mounting it on an online system with this "kexts as folders" problem? I wanted to ask before I attach backup SSDs...
As long as your system is booted up and running, you can safely mount the EFI partition of the backup drive. Just be extra careful and copy the EFI folder from the backup disk to the corrupted disk. Double-check all steps.
 
@CaseySJ I don't have any audio devices or that BIOS you're testing, but I decided to see what happened if I enabled Vt-D on my build. I was turning it off with DisableIoMapper and leaving it on in the BIOS.

With it fully enabled, both built in ethernet ports break as well as my Fenvi Wi-Fi. The Aquantia 10Gbps NIC in my Z390 doesn't break though.

The 2 built in ethernet ports stay at "not connected", and they swap positions every few seconds if I watch the list of interfaces in network settings.
 
@CaseySJ I don't have any audio devices or that BIOS you're testing, but I decided to see what happened if I enabled Vt-D on my build. I was turning it off with DisableIoMapper and leaving it on in the BIOS.

With it fully enabled, both built in ethernet ports break as well as my Fenvi Wi-Fi. The Aquantia 10Gbps NIC in my Z390 doesn't break though.

The 2 built in ethernet ports stay at "not connected", and they swap positions every few seconds if I watch the list of interfaces in network settings.
Yes, everyone has been reporting this issue regarding broken internal Ethernet and PCIe WiFi. But with new BIOS, my Z390 Designare is still fully functional with Vt-d enabled. This is being posted via the internal Ethernet port.
 
As long as your system is booted up and running, you can safely mount the EFI partition of the backup drive. Just be extra careful and copy the EFI folder from the backup disk to the corrupted disk. Double-check all steps.
D'oh! That didn't do the trick. Do I need to Rebuild Launch Services from Terminal?
 
D'oh! That didn't do the trick. Do I need to Rebuild Launch Services from Terminal?
I don't have enough information to advise on this matter.
  • Not sure what changes you tried to make to the EFI
  • Not sure how those changes were made
  • Not sure why those changes were needed
  • Not sure what happened to the kexts
Have you tried simply rebooting the system?
 
@mrfatcatt,

We managed to enable Apple Thunderbolt-to-Gigabit Ethernet adapter in Big Sur simply by enabling Vt-d as described here. This screenshot from Big Sur shows that AVB is indeed working.

View attachment 522529
AWSOME BUDDY, I WILL CHECK when i can get to my other system then i can confirm if avid carbon will work via AVB, It will be a few days till i can get back to my other place....You want me to use the config you just uploaded for avb and add my serials numbers right? I just want to confirm that i dont need any modified bios for this to work. I see there are other people dealign with other issue here so its theres alot going on atm

for now i have a day to try and figure the tb situation on my amd system i brought a few other tb 2 to 3 adapters to try

i need no security and force power set on the vision dp tb settings bios right?

also is there a way to get the open core loader in a higher res, the one you sent me or the on in hackindrom is set to a super low res.


i still have a weird issue why my amd d-p resets a few times before posting, its really annoying to me ...can anyone chime in on why this is?

also you avid fans are gonna be in for a super cool treat very soon!
 
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I don't have enough information to advise on this matter.
  • Not sure what changes you tried to make to the EFI
  • Not sure how those changes were made
  • Not sure why those changes were needed
  • Not sure what happened to the kexts
Have you tried simply rebooting the system?
Yeah, sorry. The kest function fine. I just made the mistake of trying to edit the TSC kext with PlistEditPro (right-click open). That's what changed the appearance. I've done it before a while ago, but I can't retrace my steps. I rebooted and reset the NVRAM, but I think I screwed up the file-type association simply by opening a kext with an app instead of right-clicking<Show Package Contents and opening what I needed from there. I'd been avoiding that mistake for a long time now, but I slipped up.

So, even rebuilding Launch Services via Onyx didn't help. I'm going to clone back from my own clone backup -a clone of my own.
 

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Yes, everyone has been reporting this issue regarding broken internal Ethernet and PCIe WiFi. But with new BIOS, my Z390 Designare is still fully functional with Vt-d enabled. This is being posted via the internal Ethernet port.
About theses devices issues, we can see that all related drivers share, on IONetworkStack, IONetworkMBufDMADrivers parameter :

Capture d’écran 2021-06-22 à 23.20.46.png
 
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