[EFI Loader] Error 12 Fix in Boot Camp for Apple T2 Security Chip Macs (apple_se...
 
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[EFI Loader] Error 12 Fix in Boot Camp for Apple T2 Security Chip Macs (apple_set_os loader v0.5)  

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aa15032261
(@aa15032261)
Eminent Member
Joined: 7 months ago
 

@bluexyzz

I have fixed the issue, thanks for the feedback!

MacBook Pro 16" / i9-9880H / 16GB / 5500M 4GB
Razer Core X / AMD Radeon VII


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aa15032261
(@aa15032261)
Eminent Member
Joined: 7 months ago
 

@eightarmedpet

I will try but I am not sure if I can fix it because I don't have a Nvidia gpu.

MacBook Pro 16" / i9-9880H / 16GB / 5500M 4GB
Razer Core X / AMD Radeon VII


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aa15032261
(@aa15032261)
Eminent Member
Joined: 7 months ago
 

@themegatb

Great! I appreciate it! I'm still reading the UEFI Specification (it's looooong) and hope I will find a solution to the issue soon.

MacBook Pro 16" / i9-9880H / 16GB / 5500M 4GB
Razer Core X / AMD Radeon VII


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KernelPan1c
(@kernelpan1c)
New Member
Joined: 10 months ago
 

I tried a lot lot other work arounds to try to get rid of error 12 on my 16" w/ 5500m and rx580 eGPU, but this is the only thing that has worked so far. It wouldn't work at all at first, perhaps due to other workaround attempts, but after a reinstall of windows I managed to get it working. It was a bit finicky and caused some freezes the first few run throughs, but now it's working consistently. I do have to do the left-right-left dance.

Macbook Pro 16'' | I9-9880H 2.3 GHz | 5500M 8GB
Sonnet 350 + rx580


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Pepe Sapiens
(@pepe_sapiens)
Active Member
Joined: 7 months ago
 

Hey folks, long time lurker first time poster. I have a similar setup to y’all: MBP 16” 5500M, 5700XT, Razer Core X

I’ve had some variety of success with this setup and tool but ultimately ran into a bit of a brick wall.

My “success” was with the newest version of Windows 10, swapped the pci.sys as per https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/paged/12/, installed the latest drivers from bootcampdrivers, did the left-right-left dance at which point the card started working and my external displays came alive (with the built in intel graphics and 5500M erroring out in device manager). This disabled the option to adjust the built in brightness or turn off the screen when in clamshell mode.

My issue started when I actually started trying to use the card for gaming on my external displays. Multiple games ran at very low (but stable) FPS, regardless of their graphic settings.

Am I missing something obvious? Appreciate you guys infinitely, hoping to get this resolved at some point.

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)
Reputable Member
Joined: 11 months ago
 

@pepe_sapiens

Sounds familiar ...

https://egpu.io/forums/bootcamp/bootcamp-egpu-frame-capping/

2018 Mac Mini i5 / 6-core 3.0-4.1 Ghz / 32GB / 256GB / Intel UHD 630 / PowerColor Gaming Station / PowerColor dual-fan RX5700 XT / Mac OS 10.15.5 Catalina / Windows 2004 😏 / LG 27" 4K display


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Pepe Sapiens
(@pepe_sapiens)
Active Member
Joined: 7 months ago
 

@mini-i5

That’s what I was thinking too but my setup is two monitors both running off DP. Anytime the eGPU is connected and running my laptop’s fans ramp up like crazy, even on idle. Only thing I haven’t tried yet is to run one monitor at a time but can definitely give it a go. Right now I’m in the process of doing a fresh install of Windows to try to isolate away from software issues.

On a more related note, is it expected behavior for the rest of the thunderbolt ports on the MBP to stop working? I’m using a Caldigit T3 dock for my peripherals and they don’t work at all for a few minutes after the eGPU is running, have to keep unplugging and plugging back in multiple times until it’s recognized.

This post was modified 7 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)
Reputable Member
Joined: 11 months ago
 

@pepe_sapiens

Do these problems happen only in Windows, or also in Catalina?

2018 Mac Mini i5 / 6-core 3.0-4.1 Ghz / 32GB / 256GB / Intel UHD 630 / PowerColor Gaming Station / PowerColor dual-fan RX5700 XT / Mac OS 10.15.5 Catalina / Windows 2004 😏 / LG 27" 4K display


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Pepe Sapiens
(@pepe_sapiens)
Active Member
Joined: 7 months ago
 

@mini-i5

Windows only. All works normally under Catalina. I can also confirm the Core X is working normally in Windows with a GTX 1660 ti.

The reason I’m reinstalling Windows currently is because I had been using the Nvidia card up until now, wondering if its drivers or software is introducing some unforeseen issue.

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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aa15032261
(@aa15032261)
Eminent Member
Joined: 7 months ago
 

@pepe_sapiens

I think the enclosure matters for AMD graphics cards, at least on MacBook Pro 16". I used Core X previously with Radeon VII and I had to do the port swapping. Recently, I purchased Core X Chroma because it uses JHL6540 controller (Core X uses DSL 6540) and the problem is gone! 

MacBook Pro 16" / i9-9880H / 16GB / 5500M 4GB
Razer Core X / AMD Radeon VII


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