Big Sur Secondary Monitor is flickering after update

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Big Sur Secondary Monitor is flickering after update

I have two DELL P2414H Monitors, and after the update of my Mac 2019 for Big Sur version, one of the monitors are flickering. Never had a problem when using Catalina.

Basically, I have a docking station from Thinkpad and one of the monitors is connected to it and connects to my MacPro with USB-c and the other I am using a display port adapter and connected directly to my Mac. The monitor using USB-c is flickering after the update.

MacBook Pro 15″, macOS 10.15

Posted on Nov 16, 2020 4:45 AM

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sterling r

Community Specialist

Nov 24, 2020 10:37 AM in response to ejamartins

Hello ejamartins and welcome to Apple Support Communities. It appears you are having some difficulty with flickering on an external display.

Get help with video issues on external displays connected to your Mac - Apple Support

As both monitors are the same make and model, the difference here is the docking station. You may want to check with the manufacturer to see if it needs some kind of firmware update in order to work reliably with Big Sur.

Cheers.

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