How to stop your Mac screen from dimming mechanically

Last update: 04/10/2024
Stop Mac Screen From Dimming Automatically

By default, computer systems Mac preserve battery life by mechanically dimming the display under certain circumstances. If you don't like this feature, you can prevent your Mac's display from mechanically dimming.

When does the Mac screen go dark?

Basically, your Mac's screen will dim or lose brightness in the following 3 cases.

  1. When your Mac has been idle for a while
  2. When your Mac is disconnected from direct power and running on battery power
  3. If your Mac's ambient light sensor detects that your room has brightened

To stop your Mac's screen from dimming mechanically completely, you need to prevent it from dimming in the three cases mentioned above.

Word : If you want to prevent your Mac from going to sleep, you can refer to this text: How to mechanically prevent your Mac from going to sleep.

Prevent your Mac's display from dimming when it's asleep

As you may have noticed, your Mac's screen starts to mechanically dim when it is left idle for a while, without any touches on the trackpad or typing on the keyboard.

This dimming of the display serves as an indicator that your Mac's screen will turn off in one second. In some cases, the display may dim every 30 seconds because the Mac is about to turn off its display after 1 minute of inactivity.

Therefore, a simple technique to solve this problem is to prolong There your Mac's idle state by following these steps.

1. Push the button apple icon in the main menu bar on your Mac, and then click System preferences in the drop-down menu.

Apple menu icon and System Preferences tab on Mac

2. In the System Preferences screen, click Energy saving possibility.

Power saving option in the Mac system preferences screen

3. On the next screen, click the button Battery and improve your Mac's downtime by moving the slider next to After the Flip Present Off for the best.

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4. Then click the button Power adapter and improve your Mac's downtime by moving the slider next to the After the Flip Present Off at best (See image below)

Change the sleep timer while connected to your Mac

Prevent Mac Screen from Dimming When Unplugged

Follow the steps below to prevent your Mac's display from dimming when it's disconnected from direct power and running on battery power.

1. Push the button apple icon in the main menu bar on your Mac, and then click System preferences in the drop-down menu.

Apple menu icon and System Preferences tab on Mac

2. In the System Preferences screen, click Energy saving possibility.

Power saving option in the Mac system preferences screen

3. On the next screen, click the button Battery after deselecting the option of The show is barely cut back while on battery power (See image below)

Slightly dims the display during battery power option on Mac

Now, as long as your Mac is running on battery power, the display brightness will remain exactly the same because it was the same when it was connected to power.

Prevent Mac screen from dimming mechanically

Some people encounter another issue when they see their Mac's display dimming mechanically. This occurs when the Mac's ambient light sensors detect an increase in brightness in your room, causing the Mac to dim its display to conserve battery power.

1. Push the button apple icon in the main menu bar on your Mac, and then click System preferences in the drop-down menu.

Apple menu icon and System Preferences tab on Mac

2. In the System Preferences screen, click the button View possibility.

Displays the tab in the Mac's system preferences screen

3. On the next screen, click the button View after deselecting the option of Mechanical brightness adjustment (See image below).

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After this, you will no longer have your Mac screen mechanically dimming due to a change in the lighting situation in your room.

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