Second display not detected

Discussion in 'Mac Pro' started by mcfx, Jul 27, 2013.

  1. mcfx macrumors member

    Joined:
    Jul 14, 2013
    Location:
    US
    #1
    Hi folks,

    I have the Mac Pro in my signature running my HP ZR2440w monitor on a ATI Radeon HD 5870 via DVI port. I wanted to connect my second ZR2440w monitor via the mini-display port cable but the OS doesn't detect it. Tried power cycling the monitor and unplugging the cable but nothing worked. I'm running OS X 10.6.8.

    Anyone knows if there's a known errata for this?

    Thanks!
     
  2. mcfx thread starter macrumors member

    Joined:
    Jul 14, 2013
    Location:
    US
    #2
    Problem fixed. Turns out detection doesn't work properly until disconnecting the primary monitor connected to the DVI port. Now it works fine.
     

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