I like to dim my mac fully to 0 sometimes, usually when I'm plugged into HDMI to use a monitor or TV. However, at random intervals, the screen will light up again (at brightness level 1). It's a small annoyance but it can mean having to cross the room to dim it again, or live with two screens on at the same time, which I cannot do.

Most of what I find online tells me to disable "Automatically Adjust Brightness," but I've always had it disabled. Again, this happens randomly, sometimes multiple times in a row, and nothing is being done to the computer at the time (no charging cable, etc.)

It's a 16" 2021 Macbook Pro running Monterey. Any ideas on this would be appreciated!

  • Yeah, usually I'll be using it as a video player. I like closing the MacBook and using clamshell mode sometimes, but other times I still want access to the keyboard if needed, and often want to dim the screen and have it stay dimmed Commented Dec 7, 2022 at 4:20

1 Answer 1


its an apple bug/conflict. sometimes when my screen brightness is turned down, my screen will just randomly go full 100% brightness. (& the auto dimming is off, of course)

also, i use an hdmi cable to my tv, but macOS now doesn’t allow me to turn the brightness off on my mac all the way anymore, which makes no sense…

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .