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Macbook Air M1 - uniform horizontal lines on external display (Dell U2720Q)

Hi,


I recently started having horizontal lines on my external monitor. Before everything was running fine. On my MacBook Air M1, the display is normal. The lines are independent of the resolution. At first I could solve the problem by turning the monitor on and off. But now it doesn't work anymore.


Has anyone had a similar problem before? What could be the reason?


MacBook Air 13″, macOS 12.4

Posted on Jun 8, 2022 10:30 AM

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Macbook Air M1 - uniform horizontal lines on external display (Dell U2720Q)

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