- Joined
- Jul 7, 2010
- Messages
- 353
- Motherboard
- Gigabyte GA-Z390 Gaming X
- CPU
- i9-9900
- Graphics
- HD 5870
- Mac
- Mobile Phone
I've installed Big Sur (OpenCore) for the first time and trying to nail down a few issues. This is the last one, I think. When the computer boots, at the login screen the display goes blank for about 15 seconds, then resumes normal operation. When the display goes to sleep, the screen goes blank, the monitor enters its sleep mode with the LED backlights turning off, and then about 10 seconds later it LED backlights come on again. But then the screen goes blank without the desktop appearing and the backlights go off and the monitor enters sleep mode again. This cycle continues endlessly about every 30 seconds. Pressing the spacebar or mouse button brings up the desktop just fine, so it's only this repeating cycle that I need to get sorted out. Right now, all I can do is either shut the computer down, or turn the display off. Any suggestions are appreciated!