MacBook Screen Flickering: 8 Tips for a Quick Fix

Posted By Volodymyr Chubei | 30 Aug 2024

MacBook users sometimes face the situation when the display flickers. In this article, we will consider the main reasons why Mac screen flickering, as well as offer a step-by-step guide on how to fix MacBook screen flickering. With these instructions, you can restore correct operation without going to a service center.

Why is my MacBook screen flickering

Screen flicker can be the result of the operating system and the video processor compatibility issues. Owners of MacBooks with an Apple processor are less likely to experience this situation, and the cause of MacBook screen flickering is usually related to other problems or malfunctions.

Among the possible causes of screen flicker are the following:

software and hardware failures;
mechanical damage to the screen;
unstable power supply.

8 Tips how to fix Macbook screen flickering

You can fix the situation with the Macbook screen flickering yourself if you follow the instructions. However, this refers to program failures, and in case of a broken display, it must be replaced with a new one. Such work is best entrusted to professionals.

Tip 1. Maintenance

At the first stage, it is recommended to perform maintenance of the device using the built-in tools and commands of the Terminal. However, this requires some specific knowledge and experience, so it is better to use a simple and understandable application. This way there is no chance to aggravate malfunctions in the operating system with incorrect actions.

There is an all-in-one utility called CleanMyMac X, which is distributed for free and is available on the official website. The software offers tools for MacBook maintenance, including those that can help with the blinking screen problem.

Getting the system maintenance is simple:

Open the utility and select "Maintenance".
Click on "Execute maintenance scripts" and then on "Execute".
Wait for diagnostics and recovery to complete if problems are found.

Tip 2. Upgrading macOS

Often all you need to do to solve a problem is to update your operating system to the latest version. Even inexperienced MacBook users can easily do this.

Open the Apple menu and go to System Preferences.
Select the General tab and then the Software Update section.
Check for macOS updates.
Just in case, create a backup on an external drive or cloud storage.
Follow the instructions on the screen.

After restarting the computer, check if the problem is solved. If not, proceed to the next step.

Tip 3. Resetting PRAM / NVRAM

Sometimes clogged cache and outdated system logs can interfere with the normal operation of your device, including the screen. To solve the problem, you should try resetting the non-volatile memory. On devices with Apple processors, this is an automatic process that doesn't require your involvement. But for Intel-based MacBook owners, the below algorithm should be followed:

Turn off the computer.
Start your Mac and press Option+Command+P+R for 20 seconds.
Wait for the restart with PRAM (NVRAM) reset and check if the display works correctly.

Also: How to Shut Down a MacBook

Tip 4. Diagnostics

If the cause of the MacBook screen flickering is a hardware problem, you can find out by using the Apple Diagnostics tool. First, you'll need to turn off your Mac and disconnect all unnecessary external devices. The next steps will vary depending on the processor.

For Macs with Intel:

Turn on the computer and press the D key.
Release the button when you see that the device has started.

For Macs with Apple Silicon:

Turn on your Mac, but do not release the power button.
Release the key when the startup options are displayed.
Press the Command+D buttons.

When the test is complete, codes will be displayed to indicate if there are any errors. The Apple Help Center will provide suggestions for further action next to the codes. Press Command+G, select the required action and restart your Mac.

Tip 5. Power saving settings

If you have a MacBook Pro, the screen glitching may be caused by the power saving mode settings, especially if the "Automatic Graphics Switching" option is enabled. In this case, it is recommended to do the following

Open "System Preferences" through the Apple menu.
Go to the Battery tab and click on Settings.
Find "Automatically switch graphics" and uncheck the box if it is checked.
Restart your MacBook.

Tip 6. Deleting color profiles

Duplicate MacBook color profiles can cause screen flicker problems. Sometimes, you can remove unnecessary profiles to restore normal operation.

The instructions are as follows:

Through the Apple menu, go to "System Settings" and select the "Displays" tab.
Click on the box next to the Color Profile option
If identical "Color LCD" modes are detected, delete one of them by pressing the "-" symbol.
Finally, click on "Done."

Also: Black Screen on MacBook Pro: How To Fix It

Tip 7. Connection reliability

If the screen flickers when you use it with an external display, check the quality of the connection. It is best to reconnect the cables to make sure they are well secured in the connector and nothing prevents a tight contact.

Tip 8. Disabling True Tone

This technology makes colors look more natural, but users may experience screen flicker when it malfunctions. To disable True Tone, go to System Preferences through the Apple menu, click on Displays and deactivate the technology.

Also: MacBook screen pink: 8 Ways to Fix It

If none of the above helped, you will most likely need to replace the cables or the display itself if it is physically damaged. On the Apple Parts website you will find only original parts for different models of MacBooks, which guarantee reliable and stable operation.

If you can't replace the part yourself because you don't have enough experience and knowledge, order a repair from Techtoro.io (Apple Parts) by mail. Choose your device model, specify the problem and return address. Send your computer, wait for diagnosis and repair, pay the bill and receive your MacBook within 1-2 days.

Genuine LCD Screen (Display) Assembly (661-21968) Space Gray A2485

FAQ

1. Why is my Mac screen glitching lines?

Among the most common causes are software malfunctions, incorrect power settings, and damage to the screen or its cable.

2. How do I fix my MacBook screen from flickering?

Try to update macOS, reset non-volatile memory, run diagnostics with a special utility. Check connection reliability, remove unnecessary color profiles and disable True Tone function.

ABOUT THE AUTHOR

Volodymyr Chubei
Computer Repair Specialist at TechToro.io

Volodymyr was born in Ukraine and has found his passion for electronics from his childhood. At the age of 13, he was capable of soldering some basic elements of a logic board and today he is one of the co-founders of TechToro.io