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X299 Big Sur Support

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Has anyone successfully cranked 256gb of ram on an x299 here? And if so, what board would you recommend?
I notice the QVL for many x299 boards don't even 'support' 128gb...

Thanks in advance!
I think manufacturers abandoned X299 they’re barely updating the BIOS.

Personally haven’t tried 256 but 128 works great on my board.
 
Joined
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ASUS Pro WS X299 Sage II
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Has anyone successfully cranked 256gb of ram on an x299 here? And if so, what board would you recommend?
I notice the QVL for many x299 boards don't even 'support' 128gb...

Thanks in advance!

I think @sixsixtysix has on the deluxe II
 
Joined
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Hey @djlild7hina here is the new IOReg...

Hope this helps.

Try this. Didn't realize the Thunderbolt tree is different on the alpine ridge. Otherwise I'm not sure :( not as familiar with Gigabyte systems
 

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  • OC copy2.zip
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Joined
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Try this. Didn't realize the Thunderbolt tree is different on the alpine ridge. Otherwise I'm not sure :( not as familiar with Gigabyte systems

Thank you for your help @djlild7hina, things seem to be a lot better (attached images)

I mapped all my used ports now and I'm at 14 which is perfect and I exported the proper USBmap.kext which is working since I don't see anymore all the other ports and XHCIportlimit is turned off.

Sleep is working thanks to this too so amazing!!!

Only problem I'm having right now is that hotplug isn't working... when I remove a USB device from the USB-C port and plug it back it doesn't show up. Same with my TB3 device... unplugging and replugging it doesn't get detected.

Bluetooth seems to be wonky too, doesn't connect to anything.

I've attached the IOReg just in case.
 

Attachments

  • Capture d’écran 2021-02-26 à 00.26.52.png
    Capture d’écran 2021-02-26 à 00.26.52.png
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  • IOReg_iMacPro_v003.ioreg
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Joined
Apr 18, 2011
Messages
1,478
Motherboard
ASUS Pro WS X299 Sage II
CPU
i9-10980XE
Graphics
W5500
Mac
  1. MacBook Air
  2. Mac Pro
Mobile Phone
  1. iOS
Thank you for your help @djlild7hina, things seem to be a lot better (attached images)

I mapped all my used ports now and I'm at 14 which is perfect and I exported the proper USBmap.kext which is working since I don't see anymore all the other ports and XHCIportlimit is turned off.

Sleep is working thanks to this too so amazing!!!

Only problem I'm having right now is that hotplug isn't working... when I remove a USB device from the USB-C port and plug it back it doesn't show up. Same with my TB3 device... unplugging and replugging it doesn't get detected.

Bluetooth seems to be wonky too, doesn't connect to anything.

I've attached the IOReg just in case.

What happens when you disable the TB3 SSDT? I found that SSDT from another designare user from a couple years ago so wasn’t sure if it would work.

Still not sure why you only had two controllers in USBMap when there should’ve been three. I renamed the Alpine Ridge one to XHC3 and the ASMedia one to XHC2
 
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Thanks guys who ever shared the EFi got my. Asus X299 pro working on opencore 0.6.6

but wasn't easy as after updating bios to latest version 3303 from 2002 my clover dont work anymore so was force into how to convert into opencore ,luckly i had some left over unibeast mojave just change EFI and update from then
 

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  • config.plist
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  • 319FD0A9-27C7-4DE4-9B72-579BF5630A8E_1_201_a.jpeg
    319FD0A9-27C7-4DE4-9B72-579BF5630A8E_1_201_a.jpeg
    397.3 KB · Views: 42
  • D42B3FB2-CE24-44DE-95F3-EF3364BA4181.png
    D42B3FB2-CE24-44DE-95F3-EF3364BA4181.png
    2 MB · Views: 47
Joined
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What happens when you disable the TB3 SSDT? I found that SSDT from another designare user from a couple years ago so wasn’t sure if it would work.

Still not sure why you only had two controllers in USBMap when there should’ve been three. I renamed the Alpine Ridge one to XHC3 and the ASMedia one to XHC2

I saw that yes, I've been trying different SSDT's without luck... also tried switching to MacPro 7,1 in case that could fi this problem but not luck with that either.

I have pretty much everything solved right now with this rig except this part... grrrr
 
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Updated to 11.3 Public Beta: Radeon VII now is ok, USB audio problem is gone and 5700XT is ok too. Now, what should I do? Both cards seems to work fine in 11.3 and this generates a dilemma for me because this basically is evidence that Apple, even if unofficially, still keeps an eye on VII drivers.

I spent 700€ for a used 5700XT reference which blower fan idle noise is painful and this requires an aftermarket heat sink for 100€ (I’ve sensible ears, I hate noise). My Radeon VII (bought new) is currently valued 1500€ median price and I considered switching to 5700XT only for usb audio bug, otherwise a great card and idle silent with reference 3 fan cooler.

So, your choice / suggestion:

Opt. 1 —> 1500 - (700+100) = 700€ in my pocket if I sell VII and keep this used 5700XT + Morpheus heatsink mod

Opt. 2 —> Not monetize the VII, return the 5700XT and live my life like anything never happened.

Would be great to hear @pastrychef opinion here, he’s super skilled in GPUs !
 
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MSI Tomahawk x299
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I successfully updated my build from clover to opencore 0.6.6 but I'm struggling on a fresh install of Big Sur on new m.2 ssd. The installer successfully loads but it jumps from 34 to 17 minutes, continues to load, then at the 12 minute mark crashes with "Service exited due to SIGKILL | sent by diskarbitrationd[56]" error message.

Motherboard: MSI Tomahawk X299
CPU: Intel Core i9-7940X
GPU: Radeon 550
Ram: 64 GB Corsair DD4 3200
SMIOS: MacPro7,1

Any help is greatly appreciated. Thanks!
 

Attachments

  • error.jpg
    error.jpg
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  • EFI-opencore.zip
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