Toggling off the “Automatically adjust brightness” option, your computer will still dim the screen when running on battery power with the “ Slightly dim the display while on battery power” feature enabled. If you don’t get this option here, your Mac lacks these sensors.

Activate automatically tweak brightness and your Mac will utilize the ambient light sensors to automatically configure the brightness.Go to System Preferences via Apple menu and choose “Displays”.Macs with pre-installed light sensors can detect the proximate light level and automatically set the display’s brightness intensity appropriately. Automatically Adjust Brightness According to Ambient Light Solutions on How to Turn off Auto-Brightness on Mac Solution 1. Adjust Brightness for An External Display and Dim Part 3. Solutions on How to Turn off Auto-Brightness on Mac Part 2. Scroll down to discover ways to disable the auto-brightness sensors altogether.Ĭontents: Part 1. Thus, you’ve got brightness-altering keys on how to turn off auto-brightness on Mac tooled up with an Apple keyboard. The intensity hotkeys on a Mac let you tweak an external display’s brightness manufactured by Apple. You can overcome this obstacle manually by toggling off the auto-brightness feature entirely. This makes the display brighter when the surrounding has more light or dimmer when you get into the dark. But it’s a double-edged sword as this intermittent brightness makes you fly into a rage if it’s disrupting. That's why there are, on many MacBooks, buttons right on the keyboard to let you do just that.Mac has a built-in auto-brightness feature that fine-tunes the luminosity of the display and keyboard in tandem with ambient light. Let's be clear: Manually adjusting your screen brightness makes sense. If you work in a place where the light changes throughout the day - say there's a skylight above you, or you're next to some windows - this setting means your screen is constantly doing visual summersaults in front of your eyes. Working in your dark bedroom to start the day, but your sunny backyard after lunch? Your Mac, at least in theory, will figure it out.īut reality is often quite different from theory. Some MacBooks are equipped with ambient light sensors, and will attempt to automatically adjust the screen brightness to compensate for changes in surrounding light. Thankfully, you can turn off this annoying so-called feature. Your MacBook does not know better than you.Īpple's macOS has an infuriating habit of automatically changing the computer's screen brightness level, seemingly at random.

Adjust brightness mac external display