ML doesn't recognise my new Acer monitor?

Discussion in 'OS X Mountain Lion (10.8)' started by ReflexReact, Aug 7, 2012.

  1. ReflexReact macrumors 6502

    Jun 10, 2010

    I have a new Acer monitor, model is S240HL.

    I am connecting my Mac to it via an HDMI cable and an HDMI adapter.

    I have used my Macbook Air, the HDMI adapter and the cable many times in the past on my TV -however when I plug into my Acer monitor, the screen on the Macbook Air flickers but nothing happens.

    Display settings don't show a second monitor, and nothing comes up on my monitor.

    The monitor works fine with my other HDMI connections!

    What to do?! :(
  2. ramram55 macrumors 6502a

    Jul 27, 2012
    It depends on what year is your Macbook air, it it is mid-2010 and after you are good, it not ML does not work. My case is mid 2009 macbook pro, does not work but mid 2010 mbp works.
  3. ReflexReact thread starter macrumors 6502

    Jun 10, 2010
  4. ReflexReact thread starter macrumors 6502

    Jun 10, 2010
    Update - it now see's the monitor, but the monitor just stays black. I have tried changing to 720p and 50hz and still nothing.

    Maybe its a faulty monitor! :( The monitor is fine over VGA...


    Further update - looks like the cable isn't working on this device! WTF! A different HDMI cable works fine... :/

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