Mojave 10.14.3 update - can't login to OSX when egpu is plugged in
Have been successfully running a Sonnet/VEGA 64 for months with 13 MB Pro (2017).
Just did OS X update and now whenever I plug in the EGPU, it displays my desktop on my monitor for a second, goes black then dumps me back out to the login screen.
Unplug the EGPU and I can login just fine.
similar problem here, 2018 Mini. at worst, it seems like the thunderbolt ports get screwed up, so I have to boot with nothing but an HDMI cable attached to the mini to get back to a login screen. all started with 10.14.3.
I have a very similar problem. I have a 2018 Mac Mini, Razer Core X & Radeon RX480.
Everything works fine in both Mac OSX and Windows but when it comes to rebooting it is a real pain.
When I reboot into OSX I get no picture at all, the light on the mini is on but no display output. I have turned File Vault off and still get the same issue.
I am fine not getting the recovery screen because of the EFI issues etc but I really think I should have the login screen for OSX, when searching most people who had this issue fixed it by disabling FileVault, but that didn't work for me.
I have two monitors connected to the eGPU using display port. The only way I can get a picture is if I turn off and unplug the egpu, connect the Mini to the monitor using HDMI and then hard reboot the Mini 3 times using the power button. - it's a massive pain and obviously something it wrong.
On T2 Macs, sometimes force-rebooting causes an EFI login once on next boot (a login akin to when FileVault is enabled, even when user-disabled previously). Theoretically, this may be done to protect the encrypted internal volume (since the previous shutdown was illegal - but this is only a guess).
A quick way to login blind is to press the first letter of your name (if you have multiple users - otherwise skip to putting in the password), then enter, type in your password, and then enter again. This won't work if you need to enter your entire username as well (not the default login setting).
Perhaps an NVRAM/SMC reset combo may fix the issues for users on this thread.
@mac_editor that is how I login with file vault turned on, turn on the 2018 Mac Mini wait like 20 seconds make sure that the Bluetooth keyboard is connected and type the password and press enter. I have to wait another 10 seconds and I get output from the egpu.
I still need to get some time to test things out but my main problem was when booting between windows and mac osx from boot camp.
Generally when I restart on either osx or windows the login screen shows, but on a restart from windows into osx, it is just a blank screen and then the Mac Mini turns off after a while.
I have worked around for now by using a secondary monitor connected to the Mac Mini's HDMI out and the main monitor to the eGPU.
I think this might well be my best solution and offer the least amount of pain, unless I decide to replace both monitors with a single ultra wide.