Weird issue that started in Sierra - does this happen to you?

Discussion in 'macOS Sierra (10.12)' started by aliensporebomb, Nov 1, 2016.

  1. aliensporebomb, Nov 1, 2016
    Last edited: Nov 1, 2016

    aliensporebomb macrumors 68000

    aliensporebomb

    Joined:
    Jun 19, 2005
    Location:
    Minneapolis, MN, USA, Urth
    #1
    Running: iMac Retina 5k, 27-inch, Late 2014
    Memory 32 GB
    Graphics AMD Radeon R9 M290X 2048 MB

    Configuration: Two external displays, both via thunderbolt2 ports.

    Issue: Running youtube, or any other live streaming video platform and selecting full size blanks the other two attached displays.

    Same thing happens when I try to run a game - primary display functions, other two go black. If I swipe left I get another "space" but that's not completely ideal either.

    This seems to have started with Sierra.

    Solution?
     
  2. FreakinEurekan macrumors 68040

    FreakinEurekan

    Joined:
    Sep 8, 2011
    Location:
    Eureka Springs, Arkansas
    #2
    Sounds like you have System Preferences > Mission Control > Displays have Separate Spaces un-checked
     
  3. aliensporebomb thread starter macrumors 68000

    aliensporebomb

    Joined:
    Jun 19, 2005
    Location:
    Minneapolis, MN, USA, Urth

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