What am I missing? Can't get eGPU to work on '18 Mac Mini
 
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What am I missing? Can't get eGPU to work on '18 Mac Mini  

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nwadwa
(@nwadwa)
Active Member
Joined: 6 months ago
 

Hi all,

 

Starting to get a little frustrated!

I have a 2018 Mac Mini (6-core version), and recently purchased a Razer Core X with a Radeon RX 5700 XT, but can't seem to get it to work on Windows 10 BootCamp (works fine on the MacOS side).

Here's what I've done so far:

  • Set Windows as my default boot OS.
  • Connected Razer Core X to Mac Mini via T3 cable, and to monitor via DP
  • Fresh re-install of Windows 10 Pro to 1903 V1 ISO (OS Build 18362.30) followed by an update to .295
  • Ethernet cable plugged in, no other TB ports in use

Here's the behavior in these three scenarios:

  1. HDMI plugged into Mac Mini / eGPU off, and turned on at either Windows load screen or on Windows Desktop
    • Result: Code 12
  2. HDMI plugged into Mac Mini / eGPU on and plugged in
    • Result: Prior to Windows Logo boot screen, monitor displays and hangs on circular "loading" icon.  Never progresses from there.
  3. HDMI disconnected / eGPU on and plugged in
    • Result: Blank screen, nothing happens.  I can tell by the lights on my keyboard that something turned on, but nothing on screen.  

Hope you can help me rectify - leaning towards potentially moving away from Mac Mini setup if I can't get this to work.

Thanks for any help!

This topic was modified 6 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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Mini i5
(@mini-i5)
Honorable Member
Joined: 1 year ago
 

@nwadwa

After windows boots up and you have logged in and are on the desktop, "hot plug" the the TB cable into the Mini (with the Core X already turned on).

Windows should recognize the Core X and start looking around for any drivers.

 

2018 Mac Mini i5 / 6-core 3.0-4.1 Ghz / 32GB / 256GB / Intel UHD 630 / PowerColor Gaming Station / PowerColor dual-fan RX 5700 XT / Mac OS 10.15.6 Catalina / Windows 2004 😏 / Dual LG 27" 4K displays


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nwadwa
(@nwadwa)
Active Member
Joined: 6 months ago
 
Posted by: @mini-i5

@nwadwa

After windows boots up and you have logged in and are on the desktop, "hot plug" the the TB cable into the Mini (with the Core X already turned on).

Windows should recognize the Core X and start looking around for any drivers.

 

I tried this before and I was able to install drivers using the AMD software I downloaded.  In the end I got an error (207?) that said that the drivers were installed, but there was an issue in Device Manager (Code 12).  So I have the drivers, but for some reason the Mac Mini is not allocating enough memory for the eGPU.

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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Mini i5
(@mini-i5)
Honorable Member
Joined: 1 year ago
 

It seems Windows 1903 is infected with the error 12 bug then.

The new Windows spring update should arrive next month.

I am using version 1809, which works fine with my Mini.

2018 Mac Mini i5 / 6-core 3.0-4.1 Ghz / 32GB / 256GB / Intel UHD 630 / PowerColor Gaming Station / PowerColor dual-fan RX 5700 XT / Mac OS 10.15.6 Catalina / Windows 2004 😏 / Dual LG 27" 4K displays


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Eightarmedpet
(@eightarmedpet)
Noble Member Moderator
Joined: 4 years ago

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nwadwa
(@nwadwa)
Active Member
Joined: 6 months ago
 

I'll give it a shot today and report back this afternoon

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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Lastik
(@lastik)
Active Member
Joined: 11 months ago
 

I am experiencing the same issue with almost the same configuration (Mini 2018, Razer Core X and 5700 XT). What I've already tried so far:

18362.30, 18362.295, and Fast Ring new version of WIN10, latest stable WIN 10 with replaced files

I've tried 180x version of windows also, but only without bootx64.efi.

I've tried different versions of drivers (latest AMD and bootcamp version).

I've tried efi (bootx64.efi) boot loader and without it. Everywhere 12/43 error after boot.

The most success I had was with latest Fast Ring with bootx64.efi. There I see error 43, and when I uninstall device (AMD video card) through device manager and then search for devices via device manager, I see video card without errors (no 12 or 43 error, "Device is working properly" or something like that message). But it doesn't work anyway (black screen when I switch my HDMI cable to video card input). If I replug my card afterwards, or after hot plug, I always get error 12.

This post was modified 6 months ago

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

.

ReplyQuote
nwadwa
(@nwadwa)
Active Member
Joined: 6 months ago
 
Posted by: @eightarmedpet

I found/find the 180x builds of Windows far easier to set up - worth giving a bash?

I tried and still having the same symptoms.  Any other suggestions?

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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nwadwa
(@nwadwa)
Active Member
Joined: 6 months ago
 

I have to be missing a step or something.

 

  1. Fresh re-install of Windows 10 Pro to 1903 V1 ISO (OS Build 18362.30) followed by an update to .295
  2. Reboot into safe mode and run DDU
  3. Restart and Hot Plug eGPU with 5700XT and let Device Manager recognize 
  4. Run AMD software and click factory reset.  Once prompted for reboot, close the installer and perform Shut Down.
  5. Swap HDMI to eGPU and boot

 

Result: Computer lights up, eGPU turns on, but nothing else.  Keyboard doesn’t even light up (normally does if eGPU is not plugged in).  Blank screen

 

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

.

ReplyQuote