Resolved MiniDP to Hdmi - Tv hides menu bar

Discussion in 'Mac Accessories' started by sludeking, Jan 18, 2012.

  1. sludeking, Jan 18, 2012
    Last edited: Jan 26, 2012

    sludeking macrumors newbie

    Sep 28, 2011
    Hi there,

    Just got a new tv and hdmi adapter to minidisplayport.

    I've connected and all, but the tv doesn't display the full "image/desktop". It cuts out the menu bar and a little on each side too.

    I've tried changes the resolution on the tv (1080i, 1080p, etc) but get no luck.

    I've tried checking and unchecking "overscan", but this doesn't help either.

    As you can see from the screenshot, some of the top gets cut off.

    Any help regarding this issue?


    Attached Files:

  2. simsaladimbamba

    Nov 28, 2010
    Could it be, that MIRROR DISPLAYS is selected?

    System Preferences > Displays >> Arrangement >>> Mirror Displays (but know, that the display with the lowest resolution determines the maximum resolution used on both, thus one display will have a lower than native resolution, except when both displays have the same native resolution)
  3. sludeking thread starter macrumors newbie

    Sep 28, 2011
    @simsala, thanks for the quick reply.

    The mirror feature works fine; however, I don't like using mirror. I want to use it as a second display that doesn't cut off the sides.
  4. waw74 macrumors 68040

    May 27, 2008
    what brand of TV?

    try setting the aspect ratio (on the TV) to Just scan or something similar (go through the options).

    i've found on my LG tv that naming the input to PC fixed all sorts of issues.
  5. Lennyvalentin macrumors 65816


    Apr 25, 2011
    Many TVs routinely underscan the HDMI input in case you feed it bad video that has things like closed caption information embedded into the video stream for example, which would then appear as lines of flickering noise at the top of the frame.

    This is why TVs are generally unsuitable to be used as computer displays, and you're unfortunately out of luck if the TV does not have a "PC" or "Game" mode or similar that disables this underscanning. Go through the menus carefully and see what you can find. Maybe call up the manufacturer's customer support line and see what they say, if applicable.
  6. sludeking thread starter macrumors newbie

    Sep 28, 2011
    Hey. I tried setting the tv to Screen Fit/Scan, whatever it's called, and no luck while in OS X.

    However, when I boot into my Boot Camp partition and have the screen set to Screen Fit then there is no clipping/cutting of edges.

  7. chrisvee macrumors regular

    Jul 2, 2010
    Winnipeg, Canada
    I believe there is a slider somewhere in Mac OS that adjusts the amount of under/overscan - I don't remember where it is, but it's there somewhere. Also, be sure to set your Mac's resolution to the TV's native resolution (720p, 1080p, etc.).

    There's this tool called SwitchResX that you could try. I haven't used it myself, but it's worth a shot if nothing else is working for you.

    I've also found that Windows 7 (Boot Camp) handles my external monitor better than Lion. I have no idea why..
  8. sludeking thread starter macrumors newbie

    Sep 28, 2011

    SwitchResX works like a charm. Only thing that has worked so far. Thanks loads for suggesting it. :)


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