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racb Author

Level 1

15 points

grayed out brightness option on MacBook Pro M1 Max

We have a MacBook Pro 16 inch with M1 Max chip and we can not adjust the brightness on the screen.

When going into display settings all the options are grayed out.

The Keyboard icons for the display brightness show a lock on the screen when we press them.

In control panel the display option is grayed out.

is there a hidden setting which was accidentally turned on to turn the display options off?

The computer is connected to an external display but even when taking that off we can not change anything.

we restarted the computer with a complete shut down , that did not work either.

anybody having the same issue and or a solution

thanks

MacBook Pro (2020 and later)

Posted on Mar 26, 2022 7:37 AM

Top-ranking reply

PRP_53

Level 10

89,353 points

Posted on Mar 26, 2022 7:58 AM

1 - Suggest restarting in Safe Mode. This will perform a Disk Repair, clear cache files and only load Apple Software, extensions and fonts. The boot up will be slow and can take some time - Normal.

2 - Does the issue present in this mode ?

3 - If not - there could be something in the main User Account playing up. To further isolate this - Set up users, guests, and groups on Mac. Then log out of the Main User account and log into the dummy account and test again if the issue persists.

4 - If the issue is present in the dummy account - then this appears to be a System Wide issue on the computer

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grayed out brightness option on MacBook Pro M1 Max

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