Fix - Mac Keeps Forgetting External Display Arrangement

Fix the issue of mac forgetting external display arrangement. This problem is quite common and can be fixed by a small utility called displayplacer.

I am using my Macbook pro with two Samsung 32 inch 4k monitors. I must say that my setup is sweet. But, we have a problem that is - my mac keeps forgetting external display arrangement. This issue is very frustrating as it happens randomly and you have to manually set the exact configuration everytime it happens.

I tried looking out for it solution and found out that this issue is quite common. A lot of people are facing this issue and all these macbook forums are filled with questions looking for a solution of this problem.

After a bit of google search, I found a perfectly working solution for this problem. If you too want to fix this issue of mac randomly changing the display arrangement, then follow the steps below.

  1. Install homebrew on your system.
  2. Download an utility called displayplacer. You can install it by running the command brew tap jakehilborn/jakehilborn && brew install displayplacer.
  3. Manually arrange the external displays in the order you want.
  4. Once, your arrangement is final run the following command in terminal displayplacer list. This command will return an output command. You can now run this output command anytime to set you display arrangement as the current manually set arrangement.

This is all you have to do to fix this issue of mac forgetting display arrangement. This worked like a charm for me. Do let me know if you are facing any issue with this. Will try to help you out.