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Michael Mohr
(@michael_mohr)
New Member
Joined: 2 years ago
 

I have some really promising news to report. I did a stupid thing and installed the beta on my main computer (2018 Mac Mini) and it's been operating nearly flawlessly. In fact I've had less problems than the previous (stable) release I was on.

The beta has FINALLY fixed my eGPU setup, though I have no doubt it will be broken in beta 2... that's usually how it works.

I have an RX580 in a Razer Core X and I have been affected with the black screen on boot issue. This is with the monitor plugged into the eGPU and nothing in the Minis HDMI port. Nothing would fix it other than unplugging/replugging the eGPU after booting up, and Windows would occasionally boot, but it was kinda a crapshoot and I never really figured out the circumstances under which it would work. I just know it did sometimes. I've tried everything I could find to fix it. Even going as far as formatting and reinstalling MacOS entirely. Every "fix" I found either ended up being more trouble than it's worth or it just didn't work at all.

I installed the beta expecting more of the same but by some miracle it's fixed. I now get the Apple logo on boot, I can use the boot selector through the eGPU again, I can even boot into Windows no problem. No hot plugging or USB drive bootloaders or anything. I just turn it on and the damn thing works! I have filevault on too. Switching between MacOS and Windows causes no problems either. The only thing that doesn't seem to work is the Windows logo won't appear on boot, but the eGPU will engage when it hits the login screen so I guess that's not a big deal.

I just thought I would report my findings here!

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

Eightarmedpet, Leovinus, mac_editor and 1 people liked
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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

@michael_mohr, Thank you for your report! Every macOS system update brings new firmware. It seems the one in Big Sur is treating the Mac mini well. Maybe it's getting some love because it's part of the DTK. 😛 

 

external graphics card builds
best laptops for external GPU
eGPU enclosure buyer's guide

 
2020 13" MacBook Pro [10th,4C,G] + RTX 2080 Ti @ 32Gbps-TB3 (AORUS Gaming Box) + Win10 2004 [build link]  


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steve4332
(@steve4332)
Eminent Member
Joined: 1 year ago
 

I can confirm this. Installing the Big Sur beta updates the boot rom to 1517.0.0.115.1 (iBridge: 18.16.10310.5.15,0).

Not only you get a beautiful (and rather loud...) Mac chime on startup but eGPU boot finally now works reliably with Apple logo and everything (thanks Apple, it only took like a year... :)), even after reverting to Catalina (I just installed Big Sur on an external SSD for a quick try).

Mac Mini + RX570

 

Apple Mac Mini 2018 + Zotac AMP Box Mini + Sapphire RX 570 ITX

 
2018 Mac Mini [8th,6C,B] + RX 570 @ 32Gbps-TB3 (Zotac AMP Box Mini) + macOS 10.14.5 [build link]  


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mac_editor
(@mac_editor)
Famed Member Moderator
Joined: 3 years ago
 

@itsage, on your 2019 MacBook Pro which apparently booted off the live volume, what is the output for:

tmutil listlocalsnapshots /

purge-wranglertbt-flashpurge-nvdaset-eGPU
Insights Into macOS Video Editing Performance

Master Threads:
2014 15-inch MacBook Pro 750M
2018 15-inch MacBook Pro

 
2019 13" MacBook Pro [8th,4C,U] + RX Vega 64 @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.14.6 & Win10 [build link]  


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mac_editor
(@mac_editor)
Famed Member Moderator
Joined: 3 years ago
 

@itsage ASentientBot from Macrumors figured out how to boot off of live volume. Just set tag snapshot to empty “” and reboot. So we should be able to use purge-wrangler as is to patch. Testing.

Edit: Nah couldn't get that to work.

purge-wranglertbt-flashpurge-nvdaset-eGPU
Insights Into macOS Video Editing Performance

Master Threads:
2014 15-inch MacBook Pro 750M
2018 15-inch MacBook Pro

 
2019 13" MacBook Pro [8th,4C,U] + RX Vega 64 @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.14.6 & Win10 [build link]  


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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

@mac_editor, The output is below:

Snapshots for volume group containing disk /:
com.apple.os.update-190312682FDBFD811EAF7E1DE7AA32CC00611E1594F50D161F143E85BF633A4C
com.apple.os.update-MSUPrepareUpdate

external graphics card builds
best laptops for external GPU
eGPU enclosure buyer's guide

 
2020 13" MacBook Pro [10th,4C,G] + RTX 2080 Ti @ 32Gbps-TB3 (AORUS Gaming Box) + Win10 2004 [build link]  


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mac_editor
(@mac_editor)
Famed Member Moderator
Joined: 3 years ago
 

@itsage, I see Ti82 enabled on your 2019 MBP on Big Sur. And it works fine? I just added preliminary support for macOS 11 to purge-wrangler (unreleased) and patching works transparently (users will feel no noticeable difference than before) now. However Ti82 patch does not allow my system to boot - though I still have to investigate exactly why.

 

purge-wranglertbt-flashpurge-nvdaset-eGPU
Insights Into macOS Video Editing Performance

Master Threads:
2014 15-inch MacBook Pro 750M
2018 15-inch MacBook Pro

 
2019 13" MacBook Pro [8th,4C,U] + RX Vega 64 @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.14.6 & Win10 [build link]  


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Leovinus
(@leovinus)
Eminent Member
Joined: 2 months ago
 

Awesome work everyone! This community really brings a lot of joy and curiosity. With inquisitive minds and civility you've made a truly special little nook on the web here.

Is it possible to ascertain if the Radeon driver stack has been updated at all in this release? I'm going to assume it has, but would be interesting to know.

On a side note: I was honestly a little worried when Apple didn't mention eGPU developments at all, even in passing in their notes that I could see. With the improvements recorded by users on here I can only hope that eGPU has become such a "given" technology for Apple that they never felt the need to mention it.

Rocking a Mac mini 2018/2020 i7-8700B 6C/12T with 32Gb RAM, and a PowerColor 5700 XT humming along in its Razer Core X.

 
2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X) + macOS 10.15.5 [build link]  


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Juan C. Yunis
(@juan_c_yunis)
Reputable Member
Joined: 3 years ago
 
Posted by: @steve4332

I can confirm this. Installing the Big Sur beta updates the boot rom to 1517.0.0.115.1 (iBridge: 18.16.10310.5.15,0).

Not only you get a beautiful (and rather loud...) Mac chime on startup but eGPU boot finally now works reliably with Apple logo and everything (thanks Apple, it only took like a year... :)), even after reverting to Catalina (I just installed Big Sur on an external SSD for a quick try).

Mac Mini + RX570

 

Very interesting. So that means we could install big Sur in an external disk just to get the new firmware installed and get egpu boot support and better windows integration? Thanks for testing. 

2018 Mac Mini Core i7 8700B 32GB RAM 512GB SSD + Razer Core X + AMD Radeon VII


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Eightarmedpet
(@eightarmedpet)
Noble Member Moderator
Joined: 3 years ago
 
Posted by: @michael_mohr

Switching between MacOS and Windows causes no problems either. The only thing that doesn't seem to work is the Windows logo won't appear on boot, but the eGPU will engage when it hits the login screen so I guess that's not a big deal.

I just thought I would report my findings here!

This is super interesting, are you able to check if the iGPU is disabled? Doest it show up in Device manager?

2017 13" MacBook Pro Touch Bar
GTX1060 + AKiTiO Thunder3 + Win10
GTX1070 + Sonnet Breakaway Box + Win10
GTX1070 + Razer Core V1 + Win10
Vega 56 + Razer Core V1 + macOS + Win10
Vega 56 + Mantiz Venus + macOS + W10

---

LG 5K Ultrafine flickering issue fix

 
2017 13" MacBook Pro [7th,2C,U] + RX 5700 XT @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.15.4 & Win10 2004 [build link]  


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