It seems like macOS Big Sur fixes error 12
 
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It seems like macOS Big Sur fixes error 12  

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arouris
(@arouris)
Eminent Member
Joined: 10 months ago
 

Hello all,

 

Owner of a Mac Mini 2018 + Radeon 5700XT egpu. I have done pretty much anything in the past from installing older Win10 versions to swapping pci.sys to modifying EFI, do the port dance, etc.

 

I managed to get my Windows 10 to work with the eGPU in the past out of dumb luck. It would work for a couple of days and then it would break eventually at some point for no apparent reason (even unplugging and plugging a usb device would break it). So last June I gave up with boot camp.

 

Coming yesterday I booted into Win10 without the eGPU attached and updated to 2004 - 20221.1000. Then tried with the eGPU, same all. Black screen if booted with the eGPU attached, error 12 if hot plugging the eGPU after boot.

 

Then I went into macOS and update to beta 6 of Big Sur (this is what is get fetched by apple when you enroll your mac to public betas). I installed the macOS without the eGPU attached. After installation both macOS and Win10 would work with the eGPU plugged in before booting the machine up.

 

Then I update Big Sur to beta 8 (without) the eGPU and Windows keep working just fine.

 

I don't know whether I just struck the perfect combination of resource allocation once again or whether Big Sur actually fixes things egpu-wise. I am just letting you know guys.

Mac Mini 2018 (Core i5), Sonnet 550 enclosure, Sapphire 5700 XT Nitro


ikir and Mini i5 liked
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Chefkoch
(@chefkoch)
Active Member
Joined: 8 months ago
 

For me it stopped working after updating to Beta 7/8. Was working fine on Catalina and up to Beta 6. So there are definitely some changes going on.

I already wrote down the things I tried to fix it here.

This post was modified 4 months ago

2020 13" MacBook Pro (4TB, i5, 16GB) - Razer Core X - AMD RX5700XT - Windows 1903 v1


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Erik Tank
(@erik_tank)
Eminent Member
Joined: 4 months ago
 

Anyone get their egpu working after installing Big Sur beta 8?  Mine was working on Catalina but stopped after I installed and immediately upgraded to the latest public beta of Big Sur.  All I get constantly are code 12s...

2019 16" MBP - i9 - 32GB - 5500M 8GB - 1TB SSD w/eGPU 5700XT OC


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ludalex
(@ludalex)
Eminent Member
Joined: 3 years ago
 

How about Big Sur Beta 9?

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

.

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BITFYRE
(@bitfyre)
Active Member
Joined: 2 months ago
 

@chefkoch, Ive tried everything on catalina and no use... I'm giving big sur a shot.

 

MacBook Pro: 2019 16" w/ 64GB RAM, i9 Processor, and 1 TB Storage.
eGPU: Razer Core X w/ AMD Radeon RT 5700XT | Triple Dissipation


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ludalex
(@ludalex)
Eminent Member
Joined: 3 years ago
 

@erik_tank, did you manage to solve your issues? Did you need to downgrade iBridge firmware in order to make it work?

 

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

.

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Erik Tank
(@erik_tank)
Eminent Member
Joined: 4 months ago
 
Posted by: @ludalex

@erik_tank, did you manage to solve your issues? Did you need to downgrade iBridge firmware in order to make it work?

 

I ended up doing a catalina internet restore but I don't think that downgrades the T2.  I updated to Big Sur public beta (6) and ended up using a 1903 v1 iso from some other post in these forums... as long as I block windows updates I'm fine.  Trying to update and then copy the pci.sys file from a backup just BSOD on me.  Not sure what I'm missing on that when others report success.  But at least my 1903v1 works fine right now.  I haven't gone past beta 6... seems stable enough to me I guess.  

2019 16" MBP - i9 - 32GB - 5500M 8GB - 1TB SSD w/eGPU 5700XT OC


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

@erik_tank, Some of the latest 2004 versions do not like PCI.SYS swap. I experienced the same thing so it's best to use 1903 V1. The firmware updates can change preboot behavior so it's possible to effect eGPU initiation and detection in Windows.

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2020 14" MSI Prestige 14 EVO [11th,4C,G] + RTX 3080 @ 32Gbps-TB4 (AORUS Gaming Box) + Win10 2004 [build link]  


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ludalex
(@ludalex)
Eminent Member
Joined: 3 years ago
 

@erik_tank, @itsage Yeah, that's what I'm doing as well. BSOD on pci.sys swap on latest builds, so I had to resort to using 1903. Hope new versions of Windows will fix the damn support of AMD eGPU cause it's getting ridicolous.

 

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

.

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Bob Warren
(@bob_warren)
Eminent Member
Joined: 3 months ago
 

@ludalex, Agreed and it's surprising frankly.

 

MacBook Pro 16 2019 - i9 2400, 32GB memory 5500m - eGPU Razer Core X Chroma with RX580


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