How to Disable Auto Brightness on Your Mac?

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Are you having trouble with your Mac's auto-brightness settings? It can be difficult to adjust the brightness of your display manually, so it's nice to have the convenience of auto-brightness. However, if it isn't working properly, you may want to turn it off. Here's how to do that on a Mac:

First, open System Preferences and select Displays. Then toggle off Automatically adjust brightness. After that, restart your Mac and test the issue. If the problem is resolved, restart again to exit safe mode.

You can also turn off the Content adaptive brightness control from within the Settings menu. Select Settings > System > Display and in Display settings select Brightness. Clear the Help to improve battery by optimizing the content shown and brightness check box.

Once you have adjusted these settings, you should be able to adjust your display brightness manually without any issues or glitches. You can also re-toggle Automatically adjust brightness in System Preferences at any time if you want this feature back on again.

We hope this blog post has helped you understand how to turn off Mac auto-brightness so that you can better manage your display settings without any further issues!

The Effects of Auto-Brightness on Mac Brightness Despite Being Turned Off

There can be several reasons why your Mac brightness keeps changing even though auto-brightness is off. It could be due to an issue with the ambient light sensor on your Mac, or a problem with the display settings. It could also be caused by an issue with the firmware or that controls the brightness of your display. If you have tied adjusting the auto-brightness setting under System Preferences > Displays, restarting, and then testing again, and the problem persists, it could be due to a hardware or software issue that needs to be addressed.

turn off mac auto brightness

Stopping Automatic Brightness Adjustment on a Computer

To stop your computer from automatically adjusting brightness, you'll need to adjust your display settings. To do this, select the Start button, then enter settings. From there, select Settings > System > Display. In Display settings, select Brightness and uncheck the box labeled “Help improve battery by optimizing the content shown and brightness”. This will stop your computer from automatically adjusting brightness and allow you to manually adjust it according to your preferences.

The Consequences of Auto Brightness Being Off

If your screen is still dimming with auto brightness off, it could be due to either a hardware issue or an issue with your power settings. If the issue is with your power settings, it's likely that the Low Power Mode has been activated, which reduces the display brightness to save battery life. To deactivate Low Power Mode, go to “Settings” > “Battery” and turn off the switch for “Low Power Mode”. If the issue persists after doing this, it may be due to a hardware issue and you may need to take your device to a repair shop.


In conclusion, Mac is a great platform for computing. It has many features designed to improve user experience and productivity, such as Content Adaptive Brightness Control and Automatically Adjust Brightness settings. With the help of these settings, users can easily adjust their display brightness without any hassle. The Mac also includes other useful features such as iCloud and macOS Big Sur, which make it an excellent choice for both home and users. Thanks to its stable performance and wide range of features, Mac is a great option for anyone looking for a reliable computer system.

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Sanjeev Singh

Sanjeev is the tech editor at DeviceMAG. He has a keen interest in all things technology, and loves to write about the latest developments in the industry. He has a passion for quality-focused journalism and believes in using technology to make people's lives better. He has worked in the tech industry for over 15 years, and has written for some of the biggest tech blogs in the world. Sanjeev is also an avid photographer and loves spending time with his family.