Hi everyone,
I’m running a MacBookPro11,5 and I’ve run into a serious issue with GPU switching after a messy Linux install and recovery process.
At some point I installed Linux incorrectly, but I was able to restore both macOS and Windows afterward (including reinstalling everything and wiping drives completely).
Now I’m using OpenCore Legacy Patcher, but I have a persistent problem:
The automatic switching between Intel Iris Pro and AMD GPU no longer works correctly
If the Intel Iris GPU is active and I try switching to the AMD GPU, I get either:
a black screen, or
heavy screen flickering
The system becomes unstable during GPU switching
What I tried:
Clean reinstall of macOS
Complete disk wipe
Rebuilding OpenCore setup
Right now the only “workaround” is disabling automatic switching entirely, but that forces me to stay on one GPU and I lose proper functionality.
It feels like something low-level (firmware / GPU power management / ACPI / OpenCore config) got broken and I can’t fully restore the original behavior even after wiping everything.
Has anyone seen this issue before on MacBookPro11,5 with OpenCore? Is there a known fix or proper way to fully reset GPU switching behavior?
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