Mac Pro: Multi-display setup Mac only detecting one display at a time.

Discussion in 'Mac Accessories' started by Hummer, Apr 21, 2015.

  1. Hummer macrumors 65816

    Hummer

    Joined:
    Feb 3, 2006
    Location:
    Queens, New York NY-5
    #1
    I have a Mac Pro setup that was running 4 DVI displays using thunderbolt to DVI adapters. We decided to replace the DVI displays and upgrade to four 1080p LCD TVs using thunderbolt to HDMI adapters. With this setup, the Mac Pro will only recognize one display at a time and I'm not sure why. If I try plugging one display directly into the HDMI port and another into a thunderbolt port, it will only detect the one inserted into the HDMI port.

    Anyone know what could be happening?
     
  2. Hummer thread starter macrumors 65816

    Hummer

    Joined:
    Feb 3, 2006
    Location:
    Queens, New York NY-5
    #2

    Figured it out per this article: https://support.apple.com/en-us/HT202801
     

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