Disabling one of the displays?

Discussion in 'Mac Pro' started by smarken, Mar 21, 2007.

  1. smarken macrumors newbie

    Joined:
    Mar 21, 2007
    #1
    I have a mac pro with ATI Radeon X1900 XT 512MB. My main monitor is a 23 inch Apple and my secondary monitor is my TV.

    When i am not watching movies (which is most of the time :) ) Id like to be able to turn off the dual display mode without having to yank the cable out of the graphics card.

    any ideas?

    thanks

    Kenneth
    Denmark
     
  2. princealfie macrumors 68030

    princealfie

    Joined:
    Mar 7, 2006
    Location:
    Salt Lake City UT
    #2
    Yep, just hit the off button on the TV or monitor. Easy and quick.
     
  3. smarken thread starter macrumors newbie

    Joined:
    Mar 21, 2007
    #3
    The computer still thinks that my tv is turned on... its only when i yank the actual cable from the graphics card that the display pref.disables the dual display mode. Yanking the cable out of the tv or turning off the tv does not work.

    BTW i am using the Apple DVI to Video Adapter for my tv.
     
  4. princealfie macrumors 68030

    princealfie

    Joined:
    Mar 7, 2006
    Location:
    Salt Lake City UT
    #4
    That's because there is current going to your tv to signal the connect to your graphics card.

    Just use a switchbox to shut on and off the TV so that no electricity can flow into the TV box thus rendering it completely 'dead'.
     
  5. smarken thread starter macrumors newbie

    Joined:
    Mar 21, 2007
    #5
    If I pull the video cable out of the Apple DVI to Video Adapter, so that the Apple DVI to Video Adapter is the only thing connected to the graphics card, the display pref still shows Dual Displays. Its only when I yank the Apple DVI to Video Adapter out of the graphics card that Dual display mode is deactivated.
     
  6. trainguy77 macrumors 68040

    Joined:
    Nov 13, 2003
    #6
    yeah there is something in the connector that tells it something is still plugged in. Some how it sends power back into the card. So software is your only option..unless just turning the TV off is enough for you?
     
  7. FJ218700 macrumors 68000

    FJ218700

    Joined:
    Mar 8, 2007
    Location:
    Blue Dot, Red State
    #7

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