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

[Ponkass]

Because I am no longer familiar with Clover, I cannot answer that question. As you can guess, I recommend OpenCore.

Ok, so I got stuck with Clover so took a look at OpenCore again. Stupid me had forgotten to put in the SMBIOS device name (iMac19,1). With that done, the complete install of Monterey went without any hickups. That was with my Vega 64 card in, however.

The next thing I've done is to take out the Vega card and put in my new 6900 XT. I can tell that hardware acceleration is not active as I get glitchy graphics with "inverted" colors and the wrong name for the GPU in "About this Mac". I've done some digging around the forum and also elsewhere, but to be sure I'm using the latest/best method to get it working I'm thinking I might as well ask here.

I have a Merc 319 card.

These are my current boot args:

keepsyms=1 debug=0x100 alcid=11 shikigva=80 igfxfw=2 -v agdpmod=pikera

What's the best current way to fix it?

Thanks!

 

[Ponkass]

Just to add a note: I have the XFX MERC 315 6900XT and it works flawlessly out of the box on 11.6.1 ... I've had an occasional red flash on window resizing but that's by far not a dealbreaker.

This is interesting as I have the exact same card, but I don't get hardware acceleration... I'm on Monterey though.

Correction: I’m on 319, you 315, my bad.

 

[SmackAttack]

IOS does not have a feature called "PCIe Bifurcation"

Bifurcate.... bifurcate... such a funny word. Like, "the price of that MacPro made me bifurcate all over myself!"

 

[CaseySJ]

This is interesting as I have the exact same card, but I don't get hardware acceleration... I'm on Monterey though.

Correction: I’m on 319, you 315, my bad.

What is the Device ID of your 6900 XT? I’m wondering if it’s 0x73AF instead of 0x73BF. System Information —> Graphics/Displays might show you this.

 

[CaseySJ]

Bifurcate.... bifurcate... such a funny word. Like, "the price of that MacPro made me bifurcate all over myself!"

LOL! I had the same initial reaction. Fortunately PCIe bifurcation is present in Z490 Vision D, Z590 Vision D, and Z690 Aero G. It’s fairly common nowadays, but isn’t present in Z390 Designare.

 

[mrnobdy9]

I would not recommend such cards on the Z390 Designare because:

• BIOS does not have a feature called "PCIe Bifurcation". This allows the lanes in a PCIe slot to be split into multiple 4-lane "virtual" slots.
• This Asus card accommodates up to 4 PCIe NVMe SSDs. Each NVMe SSD works best when it's given 4 PCIe lanes.
• In a x16 slot, all 4 NVMe SSDs can operate at full speed if the BIOS can bifurcate the slot into x4/x4/x4/x4.
• If not, then it's best to check the instructions or technical specs of the card to see how it deals with cases where fewer PCIe lanes are available, and cases where bifurcation is simply not available.

You can see that Asus makes this quite clear on their website:

View attachment 536182

Thanks. I was reading on my phone and must have missed this. I also probably got excited by the possibility and rushed through this.

BTW, I have an RME FF400 working perfectly via FW400 to FW800 (9pin to 6pin) cable, to a FW to TB adapter, to TB to TB3 (USB-C) adapter. not ideal, but I get to keep my precious FF400.

 

[bsholbrook]

Trying to update to OpenCore 0.7.5, system will boot and almost immediately follow login it would restart to a problem screen. Rolling back to 0.7.4 and all is good. I'd triple checked all of the platform info, I did notice processor type was 3841 on oc 0.7.4. I've tried 0 and 3841 and they lead to same issue. Have I missed a bios change or something similar? I've seen this same type of reboot to an immediate error press any key or wait screen on native Mac when there is a hardware issue.

 

[SmackAttack]

LOL! I had the same initial reaction. Fortunately PCIe bifurcation is present in Z490 Vision D, Z590 Vision D, and Z690 Aero G. It’s fairly common nowadays, but isn’t present in Z390 Designare.

Yeah, I used to BIFURCATE the slots on my old z170, that is…until the wife caught me.

 

[zgonda]

Two small images, just to show that Clover is not dead yet !! (although I also use OC 0.7.5) Configuring Clover remains simpler (in my opinion) than OpenCore !!

 

[Ponkass]

What is the Device ID of your 6900 XT? I’m wondering if it’s 0x73AF instead of 0x73BF. System Information —> Graphics/Displays might show you this.

Correct, it's "0x73af".

Do I need to flash it per:

[Success] Radeon RX 6800 XT - Big Sur

So you needed linux access to this? or what exactly is step by step. My 6900Xt cost 2500 after tax and has been sitting on floor since it arrived. makes me sad. I'm ready to put it to use. It's also red devil, just the ultimate not the liquid ultimate. Also dual bios so I'll likely not screw...

www.tonymacx86.com