Mac Pro 2013 - second display no signal

Discussion in 'Mac Pro' started by verstaerker, Jan 3, 2016.

  1. verstaerker macrumors newbie

    verstaerker

    Joined:
    Jul 21, 2011
    #1
    after i wake my mac from sleep mode the second display (Dell 4k on MDP) often gets no signal

    the only solution is to restart the mac or unplug the cable from the mac and plug it into another port

    wich is very annoying - has anybody similar problems and has any hints for a solution?
     
  2. ixxx69 macrumors 6502a

    Joined:
    Jul 31, 2009
    Location:
    United States
    #2
    Did you already see this thread?
     
  3. verstaerker thread starter macrumors newbie

    verstaerker

    Joined:
    Jul 21, 2011
    #3
    no - thank you!
    it seems turning off DDC/CI solved the problem - at least the last 3 times i woke up my mac both displays were showing a signal
     

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