MacBook Pro Screen Keeps Dimming and Brightening? Here's the fix


Many Apple users have a complaint that their MacBook Pro screen brightness keeps changing on its own. Here I am going to tell you the solutions to fix this issue. If you have the same issue, this article will help you to fix it.
Solution 1: Turn off “Automatically adjust brightness”
If you enable Automatically adjust brightness, your mac will adjust the screen brightness according to ambient light. So turn it off.

  1. Go to Apple Menu->System Preferences->Displays.
  2. Select “Display” tab.
  3. Uncheck “Automatically adjust brightness” or “Ambient light compensation”.turn off automatically adjust brightness
  4. Then adjust the brightness according to your need.

Solution 2: Disable Slightly dim the display while on battery power

  1. Go to Apple Menu->System Preferences->Energy Saver.
  2. Select “Battery” tab.
  3. Uncheck “Slightly dim the display while on battery power”.macbook pro dimming
  4. Quit System Preferences.

Solution 3: SMC Reset
If your Mac has a non-removable battery,

  1. Shut down your Mac via Apple menu->Shut Down.
  2. Press and hold the Shift + Control + Option + Power Button simultaneously.
  3. Then release the keys at the same time.
  4. Press the Power Button to turn on your Mac.

If your Mac has a removable battery,

  1. Remove the battery out of your Mac.
  2. Press and hold the Power Button for 5 seconds.
  3. Insert the battery into your Mac.
  4. Turn on your Mac.

Solution 4: Reset NVRAM/PRAM

  1. Turn off your Mac via Apple menu->Shut Down.
  2. Press the Power Button to turn on your Mac.
  3. Then immediately press and hold the Option + Command + P + R keys simultaneously as quickly as possible after pressing the Power Button.
  4. Keep pressing until you hear the startup sound for the second time.

Solution 5: Restart your Mac in Safe Mode (Safe Boot)
Restart your Mac in Safe Mode will fix many issues on your Mac. But you can’t use some features in Safe Mode.

  1. Turn off your Mac via Apple menu->Shut Down.
  2. Turn on your Mac.
  3. Press and hold the Shift Key as quickly as possible after you hear the startup sound. You can see the Apple Logo on the Screen.
  4. Keep pressing the Shift Key until you see the Login Window.
  5. Enter your User Name & Password to login. You may need to login twice if FileVault is turned on.

Other Solutions:

  1. Create a new Admin Account and use it
  2. Check for Software Update.
  3. Restore your Mac to Factory Settings.

If you know any other solutions to fix this issue, let us know through your comments.

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