Monitor Stopped Working After MacOS Update

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External Monitor Stopped Working on OSX

Yes – all hail Apple… until you’re stopped dead in your tracks after an OS update that left you monitorless. (Of course, that’s a word!)

After reading Apple discussion forums and lot’s of Stackoverflow, the whole SMC reset routine did the trick.

How to Reset the SMC

MC-What?? So the SMC is something that controls of a whole bunch of important stuff – anyways, to reset it:

Ya power down your computer (leave it plugged in), then hold down these keys:


Hold it down until something happens… or let go if nothing happens. On my Macbook 2016- I got the power meter to pop up on the screen. Other reported flashing lights on the power cord.

Startup the computer, then plugin the monitor and cross your fingers 😉


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