[HELP] Black screen on external monitor connected to eGPU
Clear all

[HELP] Black screen on external monitor connected to eGPU  


New Member
Joined: 12 months ago

I have a late 2012 27" iMac connected to a Razer Core X with a Gigabyte Aorus Radeon RX580. I don't have any problems with macOS Catalina 10.15.3 recognizing the eGPU, because it does see the RX580 and sees the Dell U3417W attached, but the screen is black. I used purge-wrangler to get the eGPU up and running from TB3 using the Apple TB1/2 adapter. I also tried using purge-nvda, but suppressing Nvidia still has the same problem and when I try to do the fix AMD option, it gets stuck on boot and I have to clear the NVRAM. The other thing of note is that I notice, at times, considerably lag in UI performance. Any help is appreciated!

Oh and when I Bootcamp to Windows 10, both iMac and Dell monitor work as intended.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.