[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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Pepe Sapiens
(@pepe_sapiens)
Active Member
Joined: 2 years ago
 

@aa15032261

Dang, good to know. I just bought the Core X last month so... might be a little bit till another investment, haha.

Either way, just wanted to report back that after the reinstall > pci.sys swap > EFI trick > 5700XT drivers install, the performance of the card is back to normal and my MBP's fans are not ramping up on idle anymore.

am still experiencing the issue of my other T3 ports not picking up my CalDigit T3 dock for a while (I'd say around 5 minutes) and I have to unplug and replug it in before it'll start to work. Leaving it plugged in while booting does not work.

Lastly, my internal display won't turn off or adjust its brightness... this seems to be related to the official drivers since the 5700xt ones break (error 43) the 5500M ones. I may experiment with the bootcampdrivers ones once they get an update as the current version is pretty unstable. In the meantime, I am using "Multimonitor Tool" to disable the built in monitor (this does not turn off the backlight).

Thanks again for all of your hard work and help getting this to run. I might start a build thread sometime so I can continue to report back~!

This post was modified 2 years 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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acantril
(@acantril)
Eminent Member
Joined: 4 years ago
 
Posted by: @aa15032261

@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! 

mmm this is interesting - i'm having issues with the standard Core X - i would buy the Chroma for sure if it fixed this, but i'm a bit hesitant to make any more purchases without some certainty. 

2019 MacBook Pro 16" / i9-9880HK / 32GB / 5500M 8GB
Razer Core X Chroma / AMD Radeon RX 5700 XT


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slindshady
(@slindshady)
New Member
Joined: 2 years ago
 

That's what I thought. Couldn't get the 5700 XT on Bootcamp working no matter what. So I bought the Chroma version that just arrived today and it didn't make any difference. Even updated to the 1904 slow preview ring because several people over on reddit said Error 12 was gone with the new pre-release.

Long story short: Neither Core X nor Chroma work with my 16" and 5700 XT. The 2080 Ti was a breeze to install. Worked after three minutes.

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: 2 years ago
 

@slindshady

Yeah, Nvidia cards have better eGPU support under Windows. If you still want to try using an AMD card, try the following, it should work using Chroma enclosure.

1. Go back to build 295, uninstall any third party patches, apple_set_os, automate-eGPU, etc.

2. Uninstall graphics driver using DDU

3. Download graphics driver from bootcampdrivers.com

4. Unplug eGPU before booting to Windows, then plug it in to the thunderbolt on the left side after login. It should recognise immediately.

5. Install graphics driver

This post was modified 2 years ago

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


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acantril
(@acantril)
Eminent Member
Joined: 4 years ago
 
Posted by: @aa15032261

@slindshady

Yeah, Nvidia cards have better eGPU support under Windows. If you still want to try using an AMD card, try the following, it should work using Chroma enclosure.

1. Go back to build 295, uninstall any third party patches, apple_set_os, automate-eGPU, etc.

2. Uninstall graphics driver using DDU

3. Download graphics driver from bootcampdrivers.com

4. Unplug eGPU before booting to Windows, then plug it in to the thunderbolt on the left side after login. It should recognise immediately.

5. Install graphics driver

The thing is - it looks like there are more people for who this DOESN'T work, than for who it works. The forums are full of people with a code 12 result to these steps.

2019 MacBook Pro 16" / i9-9880HK / 32GB / 5500M 8GB
Razer Core X Chroma / AMD Radeon RX 5700 XT


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slindshady
(@slindshady)
New Member
Joined: 2 years ago
 

I appreciate the help, but for me this is kind of a shit-show at this point.

Tried the 1904 slow ring build today - that fucked up the bootcamp install completely - wouldn't work with both enclosures and not even the nVidia card.

Clean 1909 stock install. Bluetooth gets instantly disabled after plugging in the Core X or Chroma X.
Might try a last time tomorrow with the AMD card - but at this point I'm pretty sure both enclosures are going back and the AMD card will go into a second desktop.
I'd be using the Windows Bootcamp partition for work as well, so I'm a little hesistant to not be on the lastest windows updates due to security reasons. Managing about 1000+ client logins to Google Accounts, websites etc. and can't afford any security issues ever.

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: 2 years ago
 

@slindshady

In that case, we can only hope Microsoft to patch this. Some people report that they are able to use eGPU on the latest version of Windows by replacing pci.sys file to the one from build 295, not sure if that affects security though. 

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


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Pepe Sapiens
(@pepe_sapiens)
Active Member
Joined: 2 years ago
 

@slindshady

As I posted above, I'm having hardly any issues with the pci.sys swap and this left-right-left dance. It's a bit of a pain for the bootup but very stable afterwards, keep in mind I am using AMD's official drivers.

@aa15032261

Have you tried the pci.sys swap with the latest on the Chroma? If that were to work consistently that would be sweet for future purchases.

By the way, I've been able to find a work around to get my CalDigit dock to work right away! Connecting the eGPU into the T3 pass-thru port and then doing the left-right-left everything works right away. I'll need to get a longer T3 cord before I can experiment with it too much but from initial benchmarks it does cut around 10-15% of performance off FPS so it'll definitely need some further testing to be a full solution for my setup.

Cheers!

This post was modified 2 years 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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aa15032261
(@aa15032261)
Eminent Member
Joined: 2 years ago
 

@pepe_sapiens

I haven’t tried pci.sys trick on my setup because I use Windows just for gaming so I didn’t bother to test that out. However, I can test that when I have time.

Connecting your eGPU to a dock is not the best option if you have many peripherals connected to it already since they all share the bandwidth. I suggest you to run the benchmark again without any peripherals (just the dock and the eGPU) so we can isolate the issue. I connected a wireless keyboard/mouse receiver and a webcam to my Chroma but I haven’t notice any performance impact so far.

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


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slindshady
(@slindshady)
New Member
Joined: 2 years ago
 

Would I have to do the "dance" every boot up or just once? I'd be willing to do that for the initial setup, but absolutely not every time I boot up the MacBook 😀

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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