Giving your machine a fresh start regularly can help in keeping a lot of software and hardware issues at bay. Restart Your MacĪfter tweaking the basic settings mentioned above, we recommend restarting your Mac. Step 4: Close the window and check if you can change the display brightness. Step 3: If the option for ‘Slightly Dim Display While on Battery’ is selected, click the checkbox to de-select it. Step 2: Click on Battery Preferences from the pop-up menu. Step 1: Click the Battery icon at the top-right corner of the Menu Bar. Here’s how you can disable it and see if the problem is solved. Your Mac gives you another option to slightly dim the display while it’s on battery. While there are other ways to improve battery health on Mac, dimming the display is also something that many prefer. Step 4: Close the window and try changing the display brightness using the F1 and F2 keys. Step 3: Under the Keyboard tab, check if ‘Use F1 and F2 keys as standard function keys’ is unchecked or not. But if they have been made to be used as Standard Function Keys, you won’t be able to use them for changing the brightness levels. The F1 and F2 Function Keys on your Mac keyboard are meant to change the display brightness manually. You can also try changing the display brightness manually from the slider. Step 3: Check whether the option of ‘Automatically Adjust Brightness’ is enabled. Step 2: Click on Display at the bottom-left corner.
Step 1: Press Command + Spacebar on open Spotlight Search, type System Preferences, and press Return.
If display brightness is not working on your Mac, here’s how you can check this setting to begin fixing the issue. Your Mac can automatically manage the display brightness depending on the your environment’s lighting. 1. Check Automatic Display Brightness Settings If you are facing the same issue, here are the best ways to fix the display brightness not working on Mac. There are moments when you may not change the display brightness. You might face issues with display brightness while using your Mac outside or in a restaurant.
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