Mac Mini (2018) No Display after a reboot or coming from a shutdown
I am hoping someone can help me. I have the latest Mac mini (2018) hooked up with an external GPU (Vega 64) running a thunderbolt 3 connected to two LG 4K Displays 27 (LG 27UK850-W 27" 4K UHD IPS Monitor with HDR10 with USB Type-C Connectivity and FreeSync (2018)
So basically the connection goes
I don't have the filevault on and I have done all the necessary troubleshooting such as Reset PRAM and SMC. The setup works fine on a Macbook Pro and other portables, I am only having problem with this mac mini using this setup. If I connect the HDMI directly to the mac mini, it works fine.
Which suggest that this could possible be the Thundebolt and Displayport hardware connection?
It happens if you upgrade or update MacOS or apply a security fix with the eGPU connected to the Mini. All MacOs updates need to be carried out with the eGPU disconnected and the monitor connected to the Mini or eGPU disconnected if connected to a laptop or unit with a screen
To sort out the problem connect the screen to the Mini and with the eGPU off reinstall Mac OSX once you have booted succesfully login disconnected the cable to the mini and switch on the eGPU
From there onwards will boot OK. In the odd case it does not from all devices off switch on in rapid sequence mini egpu and display
No it is not supported period. Read this note related to blackmagic but applies to any eGPU enclosure
macOS currently doesn't support eGPUs in Windows using Boot Camp or when your Mac is in macOS Recovery, at FileVault login, or installing system updates.
Thank you so much. I am not sure if a complete reinstall, seems a bit work there to put everything back up. I am testing to see If I just disconnect the egpu every single time i reboot, restart and do a software update while connected directly to the display via HDMI (no egpu).
I have this problem now. If I wait for the next system update and then remove the eGPU for the time of the update, does my boot screen work OK after that?
I am also wondering exactly that. It’s pretty easy to forget to disconnect it since there’s no warning presented and having to reinstall the OS from such a minor error seems pretty silly.
If I boot with a screen connected directly it works fine and then I can disconnect the screen. Surely there’s some fix for an OS that was updated with the eGPU attached!