It would seem that it could be easier to connect your MacBook to an external monitor? We take a laptop, monitor, connect them with a suitable cable and enjoy the picture on the big screen. In theory, it is true, but in practice, many users are faced with numerous pitfalls. What to do if Macbook Pro external monitor not working?

In this article, we will try to consider the main problems that may arise for a user who decides to increase the display space of his MacBook using an external monitor.

Consider the most common situation in which we have a MacBook and any external monitor or even a TV. They must be connected to each other with a suitable cable.

Use Detect Displays for External Screens on a Mac

Not enough laptop screen area to accommodate all the necessary tabs? The problem can be solved very easily by expanding it by connecting an external monitor. With activated desktop mode, you can work on two monitors at the same time. At the same time, the settings set the main screen, which will be the menu bar.

Read more: How to Rotate Mac Screen Orientation?

If you faced with macbook pro not detecting display try instruction above:

  • Go to the Apple menu and choose System Preference;
  • Choose the “Displays” panel;
How to Detect Displays on a Mac?
  • Hold down the “Option” key to show the “Detect Displays” button – note that it replaces the “Gather Windows” button;
How to Detect Displays on a Mac?
  • Click on “Detect Displays” while holding down Option to use the function as intended.

Monitor Modes

It is not enough just to connect the monitor to a MacBook Air laptop, you also need to correctly select the mode of operation for it.

There are only three options:

  • Mirror mode;
  • Extended desktop;
  • Close mode.


Many users are not even aware of how comfortable it is to work on multiple monitors at once, because they have never tried it. Meanwhile, the efficiency of work, when the primary, active tasks are displayed on one monitor, and on the other all secondary – chats, monitoring, etc., is several times higher. Especially if you use programs such as Mission Control, which make managing applications on different screens more convenient.

It’s the best time to ask questions and give us your feedback in comments.


Hi there! My Name is Vincent Lago! My goal is to share insightful reviews, guides, and manuals for people looking to know more about current solutions for Apple hardware and OS. I have years of technological background knowledge including owning a custom iMacs & PCs which was using for different types of business. And now, I want to share my experience with you.

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