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