[2020] M1 Mac mini wake screen rotation bug

Okay, I managed to fix this on my Mac mini. I was just trying things and I deleted a few files from the system preferences. So this is far from scientific.

I removed all the display profiles from the computer's /Library/ColorSync/Profiles

I also removed /Library/Preferences/com.apple.windowserver.plist

I removed a few other items, but I can't remember them. Fingers crossed those are the two items that do it.

Hi there Jitterjatter,

We can understand the concern with your Mac mini screen rotating upon waking. We're happy to help you with this. To isolate this issue, we'd like to have you boot the Mac mini in safe mode. You can find the steps to do so here:

Start up your Mac in safe mode

Should this issue persist in safe mode, you may need to reinstall the macOS. Find the guidance for that here:

How to reinstall macOS

Let us know the outcome, and we can go from there.

Good luck!

I have exactly the same problem with a Mac Mini M1 - single display (dell) turned once to 270 degrees, after which the Mac boots and wakes from sleep in 270, no matter if I have manually put the display in standard orientation. Have rebooted in safe mode (same problem). Have reinstalled Big Sur, same problem.

Fix please!

I am experiencing the exact same problem. I have also done safe mode (didn't work) and reinstalled the OS (didn't work) . It's causing issues because this is a work terminal, and my employees don't want to use it because they have to deal with the screen rotation every time they wake it.

Unbelievable. Great computer. Apart from the fact that everything is the wrong way up!

Hey - there is a fix. Hook your mac mini up to an iPad using sidecar. Somehow just doing so fixes the issue.