MBP won't recognize HDTV connection

Discussion in 'MacBook Pro' started by karansaraf, Jul 28, 2011.

  1. karansaraf macrumors regular

    Joined:
    Jul 18, 2010
    #1
    2011 MBP 15" i5 running Lion.

    Connected it up via Mini Displayport to HDMI cable to my new Samsung HDTV.

    Samsung says "No signal detected".

    I go to system preferences > displays and no external display is detected.

    What am I missing?
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    What exact cable are you using?

    I don't use Lion, but I remember seeing some threads in the Lion sub forum about problems with external displays, and the TV is just another external display.
     
  3. karansaraf thread starter macrumors regular

    Joined:
    Jul 18, 2010
    #3
    It's just a generic Mini Displayport to HDMI adapter plugged into an HDMI-HDMI cable.
     
  4. Maxpilot macrumors member

    Joined:
    Jun 24, 2009
    Location:
    Midwest
    #4
    Cycle through your HDMI inputs on your TV. If it is like my TV, I have 3 and the easiest HDMI slot is on the side of the TV, which is number 3 on the input screen.
     
  5. karansaraf thread starter macrumors regular

    Joined:
    Jul 18, 2010
    #5
    I've already tried that. Gone through all of the HDMI/external inputs on the TV.

    Shouldn't I be seeing the Macbook recognise an external display in system preferences > displays? Because nothing shows up.
     
  6. karansaraf thread starter macrumors regular

    Joined:
    Jul 18, 2010
    #6
    Something wierd..

    When I connect the MBP to the TV and the TV if OFF, as soon as the Mini Displayport goes into the MBP, the screen flashes blue and I can open up a system preferences > displays window called "SAMSUNG". As soon as I turn the TV on, the MBP display flashes blue again and the SAMSUNG window is gone and I can't detect anything anymore..
     

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