Having a little problem with my Mac mini. I have two monitors set up with it, and they are working fine as a dual monitor setup. However I want to rotate one so it is in portrait mode but when I change one it alters both of them. The screens aren't being mirrored so I am a little stuck on whats happening?

Any help would be appreciated.

  • if you move the display position or change the resolution it should force a dialogue on the second monitor . . change that – Junme Jun 2 '18 at 3:49
  • Go to system preferences -> mission control. Is “use separate spaces” checked? If not, check it, log out and log back in and see if you still have that problem – NoahL Jun 2 '18 at 5:53
  • Another problem might be limitations on the GPU, it can only produce limited widths and heights, and it is possible that when rotated, either one is at it’s limit. – John Keates Jun 4 '18 at 2:01

Connect only one display(the one to rotate) rotate it as desired then connect the other ! takes me time to figure that as well !!!

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