Gigabyte Z490 Vision D (Thunderbolt 3) + i5-10400 + AMD RX 580

[dehjomz]

Yes exactly!


Yes exactly!

I am intentionally going to irritate @dehjomz by saying that at least one person (you) got it right!

Lol, haha. not irritated at all I’m humble enough to not presume to know everything. I try to learn something new everyday.

It’s just that it was unclear what was happening behind the scenes (the programmer in me needs to know the details to clear the confusion).

So it appears that at least on z490, we are to stop the OEM DMAR from loading, and instead use the one referenced here: https://www.tonymacx86.com/threads/...olt-3-i5-10400-amd-rx-580.298642/post-2262181

that’s all well and good but the missing thing is why? What’s wrong the OEM DMAR?

I ask because on z590, I disabled iomapper, loaded ssdt-dmac, but am using the OEM DMAR, and I don’t have any Wi-Fi problems with AppleVTD like on z490 (without ssdt-DMAR). So I just wanted to know what I was missing.

 

[CaseySJ]

...

that’s all well and good but the missing thing is why? What’s wrong the OEM DMAR?

If we install more than 16GB memory, Ethernet and WiFi will stop working.

I ask because on z590, I disabled iomapper, loaded ssdt-dmac, but am using the OEM DMAR, and I don’t have any Wi-Fi problems with AppleVTD like on z490 (without ssdt-DMAR). So I just wanted to know what I was missing.

• On the Z590 do you have 16GB or less?
• On the Z490 do you have more than 16GB?

 

[dehjomz]

If we install more than 16GB memory, Ethernet and WiFi will stop working.

• On the Z590 do you have 16GB or less?
• On the Z490 do you have more than 16GB?

I have 32GB on z490 and 64GB on z590. I had the WiFi issue on z490 without SSDT-DMAR, but I don't appear to have any such problems on z590.

 

[prabs99]

Great guide. Trying to duplicate it. What System names can I use? I am planning on using a RX 580, and 10600K. Any thoughts?

 

[CaseySJ]

I have 32GB on z490 and 64GB on z590. I had the WiFi issue on z490 without SSDT-DMAR, but I don't appear to have any such problems on z590.

Interesting; so perhaps Z590 is immune to the problem, which means there's no need to modify or delete the standard DMAR table.

 

[CaseySJ]

Great guide. Trying to duplicate it. What System names can I use? I am planning on using a RX 580, and 10600K. Any thoughts?

iMac20,1 would be the best option if you are running Catalina or newer. Mojave does not support iMac20,1.

 

[shiecldk]

@CaseySJ Is there any way to dump the thunderbolt firmware on a laptop on macOS, Windows, or Ubuntu without the programmer?

 

[CaseySJ]

@CaseySJ Is there any way to dump the thunderbolt firmware on a laptop on macOS, Windows, or Ubuntu without the programmer?

There are two options:

• Use a Raspberry Pi, which has built-in ability to read/write SPI Flash ROM chips.
• Use a USB CH341a Programmer. This can be used from any operating system that supports the open-source flashrom application.

We have detailed guides on both options, referenced from the Tech Talk --> Thunderbolt section of Post 1 of this thread.

 

[Fabrizzioa04]

Ouch, that's not good. Some suggestions:

• Perform CMOS Reset and re-configure BIOS parameters afterwards. Always start with F7(Load Optimized Defaults).
  • Do you see Thunderbolt settings now?
• If not, shutdown the system and flip power switch on PSU to offfor at least 10 seconds (i.e. cold shutdown).
  • Then power on the system and re-flash BIOS F5.
  • Then configure BIOS parameters.
  • Do you see Thunderbolt settings now?

Other thoughts:

• When was the last time that Thunderbolt worked?
  • Last week?
  • 2 weeks ago?
  • 1 month ago?
• Were any devices added to or removed from the motherboard?
  • Any NVMe SSDs added or removed?
  • Any SATA SSDs or HDDs added or removed?
  • Any PCIe cards added or removed?
• Was the motherboard taken out of the case for any reason?
• Can you see the Thunderbolt Flash ROM chip on the backside of the motherboard?
  • If so, does it look okay?
  • Any disconnected pins?
  • Any missing resistors near the chip?

Hi, @CaseySJ! I did the CMOS reset with no result, and, today I tried to flash the SPI chip with the backup but it did not read the chip. I recently move to another house, and I cant remember any significant to happen to the PC case. I just stop using the interface for two months, aprox. Do you think it's related to the SPI chip flashing? Should I contact the Gigabyte support?

 

[canyondust]

@CaseySJ Is there any way to dump the thunderbolt firmware on a laptop on macOS, Windows, or Ubuntu without the programmer?

You MAY be able to dump the firmware using this, I did it successfully on my old Z170-UD5 TH, but haven’t tried it since:

GitHub - osy/ThunderboltPatcher: Patch Thunderbolt firmware through TI PD interface

Patch Thunderbolt firmware through TI PD interface - GitHub - osy/ThunderboltPatcher: Patch Thunderbolt firmware through TI PD interface

github.com