Screen flashes, like someone has taken a screenshot

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Level 1

12 points

Screen flashes, like someone has taken a screenshot

My MacBook Pro (16-inch, 2021) has recently started having random flashes like someone is taking a screenshot of my screen. This happens randomly, and I can't figure out what's going on. I have read a previous thread about the Accessibility option to have the flash when an alert comes through and I can confirm this option is not checked.

I am running Monterey 12.2.1 and have run Malwarebytes and Bitdefender Antivirus, both not picking up anything unusual. Is there any way I can capture when this happens to know what is triggering it? For example, some system logs. It seems unpractical to try to capture this moment by recording my screen the entire time.

MacBook Pro (2020 and later)

Posted on Mar 3, 2022 3:19 PM

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Answer 1

John Galt

Level 10

157,166 points

Mar 4, 2022 7:33 AM in response to H88H

Please restart your Mac in "Safe Mode": How to use safe mode on your Mac - Apple Support. Use it for a while in that mode. If you encounter the screen flash even once, please write back for recommendations.

Obviously you have to decide how long to use your Mac in "Safe Mode" before concluding the anomaly is not likely to occur.

Get rid of "Bitdefender". Rule 1 of Macs is don't install junk.

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Answer 2

H88H Author

Level 1

12 points

Mar 4, 2022 12:27 PM in response to John Galt

OK, thanks John. I will try that and have uninstalled Bitdefender - didn't know it was not a good bit of software!

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Screen flashes, like someone has taken a screenshot

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