Mac Mini 2018 + Razer Core X C + Vega 56 + BootCamp / Error 12, Stuck on Ready, ...
 
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Mac Mini 2018 + Razer Core X C + Vega 56 + BootCamp / Error 12, Stuck on Ready, Install Issues  

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Melonking
(@melonking)
Active Member
Joined: 1 year ago
 

Ok good news, I have this 90% working. The process I followed is this:

How to install:

  1. Remove old bootcamp and start from a fresh install. I used windows 1909 (build 18363.535). Keep eGPU disconnected (I used a thunderbolt to display port cable for the duration of the install)
  2. Replace the pci.sys as described here as the Temporary Fix you can get the replacement file here from user Shiraz and you can get instructions on bypassing permissions to do the replacement here. Once you have done the replacement, make sure you set the owner of the file back to SYSTEM or windows will reset it.
  3. Restart Windows. You can now connect the eGPU, it didn't detect the first time for me, so unplug and replug again if that happens. The GPU or Windows Generic Display show now be showing in the display adapters section of device manager. I had a generic display with and error, so I r-clicked it and did update driver, after a while the screen went black. So I disconnected the eGPU and restarted windows. When I reconnected the eGPU after the restart, it was detected successfully.
  4. Now the the GPU is detected you can install AMD drivers, get the AMD previous drivers here and download version 19.9.2, the newest version does not detect the GPU but the old ones will. This should install successfully.
  5. You can now connect the eGPU, and swap your monitor to it. It should display as expected. I found it was laggy as hell at first, so I disabled the Intel Graphics in the display adapters of device manager. This makes it run buttery smooth. (Now is a good time to setup remote desktop so you can access the computer if something goes wrong)
  6. At this point the setup should be done, and you should be able to use windows fully without issue. HOWEVER restarting is still a pain.

Restarting Bootcamp:

So When I restart bootcamp with the eGPU connected I get a black screen and windows does not appear to start up properly. Follow these steps for a crappy work around:

  1. Set up the mac to boot into windows by default and then shutdown.
  2. Disconnect the egpu (By the thunderbolt plug, not the power switch)
  3. Start up the mac and wait a few minutes for windows to boot (USB devices with light should light up once as the mac boots, then turn off, then light up again as windows boots)
  4. You can now reconnect the eGPU, (you'll know it worked if USB light switch off again). Wait a few minutes, the screen should come on and USB devices will reactivate after a few moments.
  5. Done you can now use windows again.

You will need to follow these steps every time you restart windows. Does anyone have a better way?

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

The pci.sys hack has worked (almost) like a charm for me using the latest Windows update (18363.535) and AMD drivers 19.12.3 (apparently 19.12.2 [recommended version] has issues with eGPUs, which were fixed in .3 [optional version]). I kept ownership of the pci.sys file, but set all permissions to 'deny' for TrustedInstaller. Didn't do any extra stuff, and I have no trouble with booting up or restarting with the eGPU.

The 'almost' is because my screen sometimes hangs when launching or exiting a game. Weirdly, this gets fixed by turning off the monitor and then turning it on again.

 

2018 Mac Mini + Razer Core X + XFX Radeon RX 5700 DD Ultra


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Melonking
(@melonking)
Active Member
Joined: 1 year ago
 

@federian

Interesting, I wonder why booting is an issue for me. I tried setting the owner back to me and it has not reset, but it has also not fixed the boot issue. I'm not sure the two are even related. I'm not sure if there is any way of figuring out what is going wrong with the boot.

I can confirm that AMD drivers 19.12.3 do now install and work properly.

For those interested I can also confirm that an Oculus rift connected entirely to the Razer Core X Chroma's USB ports and GPU HDMI works as expected with no issues.

Switching back and forth between bootcamp eGPU and Parallels on Mac also works without issue, although windows deactivates because of 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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@Os
 @Os
(@os)
Active Member
Joined: 1 year ago
 

Was anyone able to find a solution for the error code 12 for Mac mini

I have the Mini + Razer Core x + Readon RX 5700 (not XT) 

I have tried all of the above solutions (EFI file thing, disabling PCIs, pic.sys file replacement, downgrading windows version) and nothing seems to work. I am currently running on 1903 (.295) version Windows 10 Home. I can get the card to be recognized by windows via hot plug but the hot plug method doesn't really work for AMD cards since it results (almost always) in error 12. 

I have also tried the OP method but it doesn't work. Anything anyone? 

 

Mac mini + Razer Core x + PowerColor RX 5700XT + Catalina 10.15.2


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Mini i5
(@mini-i5)
Prominent Member
Joined: 2 years ago
 

@os

Keep an eye on this thread:

https://egpu.io/forums/bootcamp/macbook-pro-16-windows-egpu-error-12-fix/

I smell exciting things happening over there.

That... or fresh churros. 😛

Either one. 😆

2018 Mac Mini [8th,6C,B] + RX Vega 56 @ 32Gbps-TB3 (Sonnet Breakaway 650) + macOS 11.1 & Win10 [build link]  

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@Os
 @Os
(@os)
Active Member
Joined: 1 year ago
 
Posted by: @mini-i5

@os

Keep an eye on this thread:

https://egpu.io/forums/bootcamp/macbook-pro-16-windows-egpu-error-12-fix/

I smell exciting things happening there.

That... or fresh churros. 😛

Either one. 😆

I heard this one worked with several people with Mini 2018. I am about to give it a try after re-installing windows (for the 3rd time in 48 hours lol). I just have to try to understand how to extract the pci.sys file (from the old version) then go ahead and start the painful process. 

 

  https://egpu.io/forums/builds/2018-mac-mini-8th6cb-amd-radeon-rx-5700-xt-50th-anniversary-32gbps-tb3-razer-core-x-win10-gibby/#post-72426

This post was modified 1 year ago

Mac mini + Razer Core x + PowerColor RX 5700XT + Catalina 10.15.2


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Melonking
(@melonking)
Active Member
Joined: 1 year ago
 

As of updating to windows build 18363.657 and re-applying the pci.sys patch provided by Shiraz, this solution is no longer working, windows will not recognize the egpu. I have no further solution suggestions at this time, but will update if one becomes evident.

@os (Cool name :P) did you ever find success?

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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zeamp
(@zeamp)
Active Member
Joined: 2 years ago
 
Posted by: @melonking

As of updating to windows build 18363.657 and re-applying the pci.sys patch provided by Shiraz, this solution is no longer working, windows will not recognize the egpu. I have no further solution suggestions at this time, but will update if one becomes evident.

@os (Cool name :P) did you ever find success?

I've been away for about a month now, having been plagued by Error 12 issues on my Mac Mini 2018 w/ Breakaway Box + Powercolor RX 580 8GB. It works AMAZINGLY under Mac. This thing flies. But when I try to get past Error 12 (since the 1st time last year), I now can't seem to get it all working. I've spent days, weeks working on this, along with many of you who've spent way longer.

I ended up having to buy an old Dell i5-4590 PC and shove my aging RX 560 2GB in it for now, to play a few Windows-only games. It has one of those funky Dell non-standard motherboard power adapters that don't let you easily upgrade the PSU, so I can't run my beastly 580 since I cannot give it power, nor will it fit in this Dell case.

Meanwhile, my Mac and my Breakaway Box are just collecting dust as I continue to try things, read things here, and pray with you all.

Will Windows 10X fix our problems?

 

Mac Mini 2018 (i5-8500B, 8GB RAM), Sonnet Breakaway Box 350W + AMD RX 580 8GB GFX


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pesc
 pesc
(@pesc)
New Member
Joined: 1 year ago
 
Posted by: @zeamp

Will Windows 10X fix our problems?

Not sure if we need to wait until Windows 10X but I can confirm that the current Windows 10 Insider Preview (19559) has fixed my "Error 12" issues on my Mac Mini 2018 with Razer Core X and Radeon 5700.

2018 Mac Mini [8th, 6C, B] + Radeon RX5700 @ 32Gbps-TB3 (Razer Core X) + macOS 10.15.3 & Win10 19559


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Melonking
(@melonking)
Active Member
Joined: 1 year ago
 

Ok so update on the Windows Insider FAST track fix:

Attempt 1:

Enable windows insider on an existing install from Parlells and install the fast track update. This install failed, windows would reach the windows logo at startup then crash and restart. No fix could be found for this and the install was broken.

Attempt 2:

Downloaded "Windows10_InsiderPreview_Client_x64_en-us_19041" and installed this (Version 2004 Build 19041.84) as a fresh bootcamp install using a usb-c to displayport cable.

After connecting, the eGPU is detected and drivers install, AMD official drivers (20.1.3) also install, however they report that while the driver installed there was an error.

After restarting the egpu gets error 12 on hot plug, attempting to bootup with the egpu connected does not work.

Uninstalling and trying a different driver version has no effect.

Conclusion:

The Windows Insider FAST build did not fix error 12 for me, and therefor is not a reliable fix, it may work for you as some people have reported, but I cant recommend it at this time.

EDIT:

I noticed the fresh install version was old, after updating to build 19569.1000 there no no difference, error 12 same as before

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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