Second monitor not being detected after update

Just updated my 2013 MacBook Air to MacOS Big Sur 11.2.3 and now my second monitor won’t detect a signal when plugged in to HDMI adapter. I’ve tried every fix on the internet, SMC and NVRAM rest and still nothing. Second monitor just says “no signal detected”. Any help would be nice.

MacBook Air 13″, macOS 11.2

Posted on Apr 9, 2021 9:42 AM

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Second monitor not being detected after update

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