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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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tsakal
(@tsakal)
Reputable Member
Joined: 3 years ago
 

@macjj, as I use my bootcamp on an external ssd and use it only fro gaming steam games as long as they play on the 1903 version I dont need to upgrade to the newest windows version. So I have not felt the need to bother with the pci.sys. 

 

A) 2020 MacBook Pro, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Gigabyte OC 3080 10Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 latest update previously W10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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Anchoricex
(@anchoricex)
Trusted Member
Joined: 5 years ago
 

Is the pci.sys thing STILL not fixed on windows’ end? Are they aware that their update broke eGPU’s? We’re a few months away from having dealt with this issue for a year. I can’t tell if this was intentional by Microsoft or they’re blissfully unaware of the issue. 

This post was modified 1 year 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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Ningauble77
(@ningauble77)
Reputable Member
Joined: 4 years ago
 

Microsoft is aware, I used the Windows 10 Feedback Hub app to report it very shortly after the first problematic system update:

  https://aka.ms/AA65meb  

They did say they were working on it and want me to be able to use my egpu, for whatever that is worth.  The response from a Microsoft rep was a couple 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 // inc Radeon VII & 4xGPU concurrent benchmarks [build link]  


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johnot
(@johnot)
New Member
Joined: 1 year ago
 

@macjj, I tried the pci.sys method (same file from this thread) with Windows 10 2004, but I got:

  • Black screen booting with iGPU (couldn't do a hot-plug)
  • Flickering windows logo on cold-plug (it seems to continue booting in the background, because I have SCPToolkit which makes a sound every time I login, and it did)

I then decided to reinstall Windows 1903.30, but got:

  • Flickering windows logo on cold-plug
  • BSOD's (different errors) when I hot-plug

 

This post was modified 1 year 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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Mark Bernardinis
(@mark_bernardinis)
New Member
Joined: 1 year ago
 
Posted by: @johnot

@macjj, I tried the pci.sys method (same file from this thread) with Windows 10 2004, but I got:

  • Black screen booting with iGPU (couldn't do a hot-plug)
  • Flickering windows logo on cold-plug (it seems to continue booting in the background, because I have SCPToolkit which makes a sound every time I login, and it did)

I then decided to reinstall Windows 1903.30, but got:

  • Flickering windows logo on cold-plug
  • BSOD's (different errors) when I hot-plug

 

I have yet to upgrade to 2004 but I did the pci.sys trick (it is dated 19/3/2019) with 1903, OS build 18362.900 and this build works with the latest patches applied.

When I click Check for updates I am not given the option to install the "Feature update to Windows 10, version 2004". Based on your experience I will hold off on that upgrade for the time being.

It definitely is an issue with the pci.sys upgrade as I confirmed that the pci.sys dated 23/6/2020 (well that is the date on my system - I may have modified it when I renamed it) doesn't work and I had to apply the old pci.sys again. Microsoft need to expedite their fix - it's very annoying.

MacBook Pro 2020 13" 10th Gen CPU, 2TB, 32GB RAM, Razer Core X Chroma, 5700 XT (pci.sys patch)


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FromTheVault
(@fromthevault)
New Member
Joined: 1 year ago
 

Does this affect all graphics cards, or just AMD? I'm just wondering as I've got a new XPS 9300 and want to know what this error does, and how to avoid it.

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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miraliska
(@miraliska)
New Member
Joined: 1 year ago
 
Posted by: @daniele_pugliese

Temporary Fix [by @bas_timer]

A quick analysis shows that in `pci.sys`, a function called "PciOverrideBridgeRequirements" got changed between .1 and .329 to add 2 additional override cases from the initial build of pci.sys. There does not seem to be a registry change to bypass this, but perhaps this can be overridden from ACPI: that's a slightly later concern I might look into, it does seem to act on a resource requirement value. For now, downgrading system32\drivers\pci.sys to the version shipped with the initial 18362.1/.10 ISO (take ownership, rename, replace) works fine, but it might be this'll need to be put back to allow future CUs editing this file to be installed. Perhaps as a workaround references to pci.sys in the registry could be renamed to, say, pci2.sys as well, but I'm not certain about this...

  • Open install.wim with 7-Zip
  • Mount the Image and then extract the following file
  • X:\sources\install.wim\1\Windows\System32\drivers\pci.sys
  • After updating Windows to 1903/1909 boot from an "Emergency" USB-Drive and replace Windows\System32\drivers\pci.sys with the extract one.
  • Reboot and your AMD eGPU will working.

Thank You very much, this works fine!

HP Spectre x360 13-aw0108nc + Sapphire GearBox TB3 + ASUS Radeon RX5700XT-8G, Win 10 20H1 (v2004)


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Magwezie
(@magwezie)
Active Member
Joined: 3 years ago
 

@tsakal, I started out with 1903, found the system did not seem to perform well. Had a lot of hanging and just a general feeling of sluggish performance. 

I did a couple of reinstallations with same results. Since I have now used the newer version of Windows and the PCI.sys fix, the system feels just like it should.

I am also getting slightly better framerates than I was getting previously. 

Most recently playing Fortnite getting an extra 10 FPS (around 50 - 60) with all settings at EPIC.

 

 

 

This post was modified 1 year ago

2018 MacBook Pro 13 inch Touch Bar
Razer Core X Chroma + AMD rx5500 tx


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tsakal
(@tsakal)
Reputable Member
Joined: 3 years ago
 

@magwezie, Thank you for this. In my case I have not had any major issues with sim racing games, just the odd crash here or there. So I stick to 1903 for the time being as it is relatively stable for me. 

 

However, I will try to make a new drive with the latest windows version to see if there is a difference. Which guide did you follow for the pci.sys fix? 

 

A) 2020 MacBook Pro, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Gigabyte OC 3080 10Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 latest update previously W10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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Magwezie
(@magwezie)
Active Member
Joined: 3 years ago
 

@tsakal

I used the guide provided in this thread by Andreas Thomaidis. It is worth reading it word for word and follow it EXACTLY as stated. I had a couple of issues when I didn't read correctly or save when it said I had to.

As I have previously mentioned it is an AWESOME reference and when followed word for word, worked flawlessly.

 

2018 MacBook Pro 13 inch Touch Bar
Razer Core X Chroma + AMD rx5500 tx


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