iMac 27+ 24acd brightness not working

Discussion in 'iMac' started by BigJohno, Jul 20, 2011.

  1. BigJohno macrumors 65816

    Joined:
    Jan 1, 2007
    Location:
    San Francisco
    #1
    So I have a late 09 i7 iMac hooked to a 24 acd and when I turn the brightness down on the iMac it doesn't effect the 24. How can I make the two monitors brightness be synced. Any help is appreciated.

    I have tried unplugging the 24 and plugging the usb in as well. Still nothing. I am running the gm of lion as well but I also had this issue in snow leopard.
     
  2. BigJohno thread starter macrumors 65816

    Joined:
    Jan 1, 2007
    Location:
    San Francisco
    #2
    Still cannot figure it out. I downloaded this program called shades or something and that still didn't fix my problem.
     
  3. jfisk87 macrumors newbie

    Joined:
    Oct 28, 2009
    #3
    I never had any luck with that. I also have a 27" imac and a 24 acd. Curious, did you use a hardware calibrator for the 2 displays? The 24" acd has slightly warmer colors and im trying to find a color profile for the 2 screens.
     
  4. BigJohno thread starter macrumors 65816

    Joined:
    Jan 1, 2007
    Location:
    San Francisco
    #4
    My second display is also a little warmer than my 27. Are you talking about a color calibrator? I have read that you cannot contol the brightness unless you have mirror enabled but I cant do that because of the different screen sizes.
     

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