I've been having problems with vertical lines, flickering, and ghosting on an external 4K monitor connected to my M1 MacBook Air.

The symptoms persist when I unplug the video cable or select another input on the monitor or KVM, so I have assumed it's a defective monitor. I replaced the monitor and it's still happening.

I found a long MacRumors forum thread about this problem: https://forums.macrumors.com/threads/m1-air-ghosting-flickering-with-external-display.2271670/

#M1Mac #macOS #VerticalLines #Flickering #ImageRetention

I've been having problems with vertical lines, flickering, and ghosting on an external 4K monitor connected to my M1 MacBook Air.

The symptoms persist when I unplug the video cable or select another input on the monitor or KVM, so I have assumed it's a defective monitor. I replaced the monitor and it's still happening.

I found a long MacRumors forum thread about this problem: https://forums.macrumors.com/threads/m1-air-ghosting-flickering-with-external-display.2271670/

#M1Mac #macOS #VerticalLines #Flickering #ImageRetention