GTX 660 Ti: Black screens with mouse cursor

I've upgraded from a Kepler GT 730 (GK208B) to a GTX 660 Ti (GK104).

When I use the 660 Ti, after the verbose boot log, I get a black screen, presumably as the Apple logo and progress bar display. After a short delay, the mouse cursor appears.

When I move the mouse cursor between displays, I can see that my display positions have applied correctly. Furthermore, if I put in the 730 and connect just one display to it, I can see that the displays connected to the 660 Ti are recognised as normal, and I can even adjust their brightnesses over DDC/CI with MonitorControl.

Does anyone know what's going on here?

System information:

OS macOS Big Sur 11.4
Motherboard Gigabyte GA-B75M-D3H
CPU Intel® Core™ i5-3470
RAM 24GB @ 1333MHz DDR3 (2x 8GB @ 1600MHz, 2x 4GB @ 1333MHz)
GPU #1 Asus GTX660-TI-DC2-2GD5
GPU #2 Dell GT 730
Display #1 Dell S2421HS (HDMI)
Display #2 Dell U2410 (DVI)

My EFI partition is on GitHub: https://github.com/hacker1024/GA-B75M-D3H-Hackintosh

submitted by /u/superl2
[link] [comments]
Share: