You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

external monitor no signal

I have a Macbook pro 16 of 2019, working great with the lid closed using an external monitor. Suddenly one day when I close the lid my external monitor gets black and says "no signal input" if I open the lid, the cover... everything works great both on mirror display and as extension... but i prefer to work with my lid closed on one screen only. is there any solution for this??? i use Catalina and don't want to upgrade to big sur... thank you

MacBook Pro 16″, macOS 10.15

Posted on Apr 1, 2021 6:33 AM

Top-ranking reply

dominic23

Level 10

83,952 points

Posted on Apr 1, 2021 7:13 AM

Reset SMC: How to reset the SMC of your Mac - Apple Support Choose the appropriate method.

Startup in Safe mode. https://support.apple.com/en-gb/HT201262

To leave Safe Mode, click  in the menu bar and choose “Restart”

View in context

external monitor no signal

Similar questions