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horizontal lines after 4-5hrs use

I have Mac book pro 13 inch of 2018, I have updated to Big Sur 11.5, for last couple of days I found if I use my MacBook for 4-5 hrs , horizontal lines appear on my top portion of the screen. What is the reason ? how to fix it? rather to resolve?

MacBook Pro 13″, macOS 11.4

Posted on Jul 29, 2021 11:28 PM

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Question marked as Top-ranking reply

Posted on Jul 30, 2021 12:30 AM

Hi,

Try to check your MacBook Pro with Apple Diagnostics if it reports graphics or display hardware related error.

Use Apple Diagnostics to test your Mac - Apple Support

Apple Diagnostics reference codes - Apple Support

If it reports no error, it's caused by software bug.


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horizontal lines after 4-5hrs use

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