User profile for user: Karun99
Karun99 Author
User level: Level 1
4 points

Flikering white lines after using for 3,4 hours

I'm using MacBook air M1; after using for certain hours, there starts appearing few whites lines and the background light of the laptop starts flikering constantly; which disappears after giving it few rest; is it because of overusage? I remembering clearing (cache/temp/idk what)files but could not know whether it started afterwards that deletion. I also tried to reinstall my MacOs but it says os cannot be downgraded. First Aid option in the setting didn't work. Is it hardware/software glitch?

MacBook Air 13″, macOS 13.4

Posted on Jul 25, 2023 11:45 AM

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User profile for user: Gena_D
Gena_D
User level: Community Specialist

Posted on Jul 26, 2023 10:24 AM

Hello Karun99,


To start off, we advise that you restart your Mac (Shut down or restart your Mac) and make sure it's fully updated (Update macOS on Mac). Once those are done, please test this issue.


If the issue persists, continue by testing to see when this behavior occurs. First, put your Mac into safe mode and test. Booting into safe mode will disable any startup and login items from automatically opening, which can help us to isolate the source of the issue further. When you do this, you’ll see some unusual behavior from the display; this is to be expected. Please follow the steps in this article: How to use safe mode on your Mac. 


Next, let's see if this behavior persists in a new user account on your Mac. Testing in a new user will determine if you have a system-wide issue or if it's user-specific. Please follow these steps to make a test account that can be deleted later: Change Users & Groups settings on Mac. Once the new user account has been set up, log out of your own account then into the new one to test the issue.


Let us know how this goes, please. Thanks and take care.

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Question marked as Top-ranking reply
User profile for user: Gena_D
Gena_D
User level: Community Specialist

Jul 26, 2023 10:24 AM in response to Karun99

Hello Karun99,


To start off, we advise that you restart your Mac (Shut down or restart your Mac) and make sure it's fully updated (Update macOS on Mac). Once those are done, please test this issue.


If the issue persists, continue by testing to see when this behavior occurs. First, put your Mac into safe mode and test. Booting into safe mode will disable any startup and login items from automatically opening, which can help us to isolate the source of the issue further. When you do this, you’ll see some unusual behavior from the display; this is to be expected. Please follow the steps in this article: How to use safe mode on your Mac. 


Next, let's see if this behavior persists in a new user account on your Mac. Testing in a new user will determine if you have a system-wide issue or if it's user-specific. Please follow these steps to make a test account that can be deleted later: Change Users & Groups settings on Mac. Once the new user account has been set up, log out of your own account then into the new one to test the issue.


Let us know how this goes, please. Thanks and take care.

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Flikering white lines after using for 3,4 hours

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