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[Solved] eGPU error 12 fail after update to Windows 10 1903 or newer (OS Build 18362.329 or newer) inc downgrade pci.sys version solution  

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Sky11
(@sky11)
Reputable Member
Joined: 4 years ago
 

Folks,

It looks like Windows 10 20H1 build 19041.423 finally fixes PCI.SYS issue!

I do not see MSFT mentionining it in the release https://support.microsoft.com/en-ca/help/4568831/windows-10-update-kb4568831 , but after installing the update, I checked PCI.SYS, and it is showing new version. Typically when Windows Update replaces 19H1 PCI.SYS, my XConnect setup stops working right away (the host laptop has internal dGPU), and this time, everything continues to work Smile

19041.423 screenshot

 

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

@sky11, Wonderful news and great to hear from you! I will try this on a couple Macs and report back.

Below is the link to download the standalone package for KB4568831 [OS Build 19041.423].

http://www.catalog.update.microsoft.com/Search.aspx?q=KB4568831

 

external graphics card builds
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2020 15" HP Spectre X360 [11th,4C,G] + RTX 2080 Ti @ 32Gbps-TB4 (AORUS Gaming Box) + Win10 2004 [build link]  


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mac_editor
(@mac_editor)
Famed Member Moderator
Joined: 4 years ago
 

@sky11, encouraging news!👍

 

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
 

I ran Windows 10 Standalone Update KB4568831 [OS Build 19041.423] on the 2018 Mac mini and can confirm Radeon eGPU now works in Boot Camp without error 12. The preparation was to remove Radeon drivers through DDU. Once the Windows update completed, I hotplugged the Radeon RX Vega 56 eGPU then proceeded to install Radeon drivers. The Radeon Installer reported error 207 but the eGPU worked through cold-plug.

Using the modified apple_set_os v0.5 boot loader, I could cold boot with the eGPU connected and keep Intel iGPU activated in Windows. If you don't use an EFI boot loader, the Radeon eGPU still works through cold-plug but the Intel iGPU would be deactivated. I tried hot-plug but that resulted in error 12.

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

 
2020 15" HP Spectre X360 [11th,4C,G] + RTX 2080 Ti @ 32Gbps-TB4 (AORUS Gaming Box) + Win10 2004 [build link]  


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Ningauble77
(@ningauble77)
Reputable Member
Joined: 3 years ago
 

Tried it with my 2019 Macbook Pro 16 with the jan 2020 bootcampdrivers.com driver, and the latest July official AMD drivers. Bootcampdrivers.com drivers installed but got error 12. Official amd installer would only yield error 173, could sideload them in device manager from the install folder but still got error 12.  Tried disabling left side thunderbolt pcie root, and using the right hand ports, tried disabling the right hand side pcie root and using the left hand ports.  Also disabled the wifi root port.  Tried cold-plug and hotplug, no dice.  Tried running on the GTX 2080 egpu  and disabling the onboard Radeon Pro 5500m to see if the Radeon VII would initialize but no luck there either.  Wasn't brave enough to reboot with the dgpu disabled though.

I would see if anything changed with the Asrock Mini ITX PC but the motherboard is currently being RMA'd, and it already works pretty well cold-plugged.

This post was modified 4 months ago

2019 16 Macbook Pro + Core v2 + Radeon VII MacOS 10.15.1
Core X Chroma + RTX 2080 Windows 10 1909
Asrock X570 Phantom Gaming ITX/TB3, Ryzen 5 3400G + Core v2 + Radeon VII Win10 1909

 
2020 13" Razer Blade Stealth (GTX1650Ti) [11th,4C,G] + RTX 2080 @ 32Gbps-TB4 (Razer Core X Chroma) + Win10 20H2 [build link]  


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

@ningauble77, Definitely not as good as Win10 1903 V1 PCI.SYS in my testing so far. I'm using the RX 5700 XT with the 2019 16-in MacBook Pro and it's not able to clear error 12 with dGPU running. This new Win10 2004 may work better for non-Macs and iGPU-only Macs but dGPU-Macs should remain on 1903 .30 to .295.

 

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

 
2020 15" HP Spectre X360 [11th,4C,G] + RTX 2080 Ti @ 32Gbps-TB4 (AORUS Gaming Box) + Win10 2004 [build link]  


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S Mahmoud Miri
(@s_mahmoud_miri)
New Member
Joined: 4 months ago
 

Just confirming that it works for me now without any modifications. Setup:

 

Mac Mini 2018

Razer Core X with Vega 64

Build: 19041.423

 

Like mentioned above, pci.sys file has been updated by MS in the last update. So, it's probably fixed by them; finally. Smile

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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jimmcq
(@jimmcq)
Active Member
Joined: 2 years ago
 
Posted by: @s_mahmoud_miri

Mac Mini 2018

Razer Core X with Vega 64

Build: 19041.423

Same setup, and it WORKS!!

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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deduwka
(@deduwka)
Active Member
Joined: 1 year ago
 

I can confirm the issue isn't present in the 19041.423 build.

 

What I did (with 3-4 reboots in the process):

2017 15" MacBook Pro i7 16GB 1TB-SSD
Razer Core X + RTX 2070 Super

 
2017 15" MacBook Pro (RP560) [7th,4C,H] + RTX 2070 Super @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  


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dmwood
(@dmwood)
New Member
Joined: 6 months ago
 
Posted by: @deduwka

I can confirm the issue isn't present in the 19041.423 build.

 

What I did (with 3-4 reboots in the process):

The above worked for me also.

Had to use DDU though to clean up existing drivers and performed several reboots for updates, and then for the Radeon drivers to kick in.

Thanks for sharing ! 😀 

This post was modified 4 months ago

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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