occasionally there will be a black screen when starting up

[Haoxw]

Hello, first of all, thank you very much for sharing! My T14 installed macOS15.1.1 and works basically normally, but occasionally there will be a black screen when starting up. You need to long press the power button to shut down and then restart. Do you know what the reason is?
Another thing is that my microphone is not working properly. I checked the previous questions. Is this microphone undriveable under version 15.x.x?

IORegistryExplorer file save

HaoT14 MacBook Pro.zip

[Haoxw]

Hello, I recently discovered that after the system starts up, the so-called black screen is actually because the screen brightness is very low. However, the button for adjusting the screen brightness does not work at this time, and I can only force the computer to shut down and then restart.

[Baio1977]

Try, one of the two patches fixes

[Haoxw]

Thank you. I have added these two startup items according to your method. I will test it again to see if the problem of dark screen still occurs.