How to Fix Black screen at login unless I unplug a screen
This mini-guide provides a structural approach to troubleshoot and fix the issue.
Prerequisites
- Confirm your hardware specifications (CPU, GPU, Motherboard).
- Ensure you have a bootable recovery USB and backup your EFI.
Fix Steps
- Check if your GPU requires WhateverGreen or specific boot-args (e.g., agdpmod=pikera).
- Ensure Metal acceleration is fully supported for your macOS version.
- Update Lilu and WhateverGreen to the latest versions.
Verification
- Reboot and verify if the functionality is restored and stable under typical usage.
Original Question:
- Asus Prime a x299
- Intel i7 9800x
- Amd w5500 gpu
- Big Sur 11.2.3
- OpenCore 0.6.7
I installed via the guide. And I have a working system. Except for one annoying issue.
I've two monitors hooked up via displayport. Boot messages show up fine. But when I get to the login screen I get black screens. The computer seems to be working aside from the video output. What resolves it is if I unplug one screen and then replug it in. That gets the monitor output working and all is well.
But this is annoying to have to do every time I start my computer. Is there any fix to this?
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