Trouble connecting external display to new Imac i7

Discussion in 'iMac' started by roderick, Feb 8, 2010.

  1. roderick macrumors member

    Feb 16, 2008
    I have the mini display port plugged in and a vga cable from the imac to my external monitor. I should just be able to turn the monitor on and it work but the imac doesn't detect it and it just comes up as a black screen. Is there something else to try?
  2. gospel9 macrumors regular

    Sep 20, 2008
    Yeah the external display should just work as long as it is on. Saw this problem before a while ago but it seems pretty rare. Just call Apple they will send you a new one.
  3. roderick thread starter macrumors member

    Feb 16, 2008
    ok, i reset the pram and the monitor was detected but now I have another problem. The external monitor's full resolution is 1920 x 1200 but that resolution is not an option!?! The highest it goes is 1600 x 1200 and I have these ugly black bars on the sides of the screen. Anyone know how I can get my external monitor to full resolution? Thanks!

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