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RJTreef Author

Level 1

8 points

mirroring

Hello. Even after the Big Sur update I am still not able to mirror to my external display on my 2017 iMac. Any suggestions?

iMac Line (2012 and Later)

Posted on Feb 2, 2021 5:45 AM

Top-ranking reply

Jack-19

Level 8

46,020 points

Posted on Feb 2, 2021 10:22 AM

Hi RJTreef,

What external display are you trying to use?

Have you tried reading this article, Get help with video issues on external displays connected to your Mac - Apple Support?

Also, try resetting:

SMC - How to reset the SMC of your Mac - Apple Support
PRAM/NVRAM - Reset NVRAM or PRAM on your Mac - Apple Support

Cheers,

Jack

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