Flickering on external monitor

I have an 18 month old macbook Pro which I use with a 12 month old Acer monitor. Connection is through an HDMI cable to an adapter. Since upgrading to Big Sur, I am suffering from screen slippage and bad flickering on the ACER monitor. Unplugging the HDMI cable seems to solve it temporarily but it is happening more frequently.

My OS is up to date and I can't see a particular issue with the display settings.

Any suggestions?

MacBook Pro 13″, macOS 11.4

Posted on Jun 22, 2021 5:46 PM

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1 reply

Jun 23, 2021 12:19 PM in response to alibri

Hello alibri,

Thanks for using Apple Support Communities. We understand that you're having issues with your external display. Have you tried using a different HDMI cable? Have you also trued restarting your Mac? Do these troubleshooting steps listed in this article help?

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

Take care.

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Flickering on external monitor

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