Early 2008 MBP + 23inch 1080p Display. Help!

Discussion in 'MacBook Pro' started by 88888888, Nov 14, 2011.

  1. 88888888 macrumors 6502a

    May 28, 2008
    I just bought a 1080P display 1920x1080. 23 inch monitor.

    I have an early 2008 mbp with 2.5ghz core 2 duo, 4gb ram, and 512mb 8600gt. and when I close the lid to get the full resolution on my 1080p monitor, everything gets really laggy... Is it because my computer can't handle it? It's weird, when I do Dual Display, which operates at full resolution too..i think, it has no lag at all.. I was wondering why I'm experiencing lag?

  2. teknikal90 macrumors 68030


    Jan 28, 2008
    Vancouver, BC
  3. 88888888 thread starter macrumors 6502a

    May 28, 2008
  4. 88888888 thread starter macrumors 6502a

    May 28, 2008
  5. youngmac macrumors regular

    Apr 17, 2010
    That's strange because i use a 1080p 21.5 screen and i don't get any lag.
    whether i'm using the external only or both screen at the same time.

    i have the late 2008 mbp with 256mb graphics 9600m gt and i'm not even using the dedicated graphics. the integrated nvidia 9400m is handling it very well.

    so i don't think the reason is that your computer can't handle it.
  6. BuckyN8 macrumors newbie

    Mar 23, 2011
    What are you using to connect the monitor to your computer?
  7. Queen6, Nov 16, 2011
    Last edited: Nov 16, 2011

    Queen6 macrumors 603


    Dec 11, 2008
    Putting out the fire with gasoline...
    Same early 2008 MBP 4.1 (2.4Ghz ) I run in dual screen with a HP 24" @ 1920 x 1200 never experienced any lag. So the hardware is definitely capable, difference I am running Snow leopard 10.6.8

    connected via DVI, compare the machines temperature between the lid open & closed, there may be a difference if the CPU is getting too hot it will throttle down...
  8. 88888888 thread starter macrumors 6502a

    May 28, 2008
    I'm using a dvi-dvi to connect from comp to monitor.
    Hmm..yea after couple more days of using it, my computer is slower:( Is it because I run like 10 apps at the same time? well I do that without monitor and its fine.
  9. visim91 macrumors 6502

    Nov 13, 2011
    Your problem is consistent with many other Apple laptop users attempting to port their workspace onto an external display. I wonder if I may have a solution to your problem..

    Download & install Insomnia into your Applications folder.

    Prior to executing the application ensure your laptop is already attached to the display in question.

    Startup & "Enable" Insomnia.

    At this time, if you haven't already, please adjust monitor settings so as to make your external display the primary workspace.
    (System Preferences -> Displays -> Arrangement -> Drag the menu bar to the desired display.)

    Decrease the laptop's brightness using the keyboard until the laptop display turns completely off/black.

    Shut the lid of your laptop.

    Work & play as you would :eek:
  10. snaky69 macrumors 603

    Mar 14, 2008
    I have the same computer with the 256mb 8600GT and a 1080p screen with no problems whatsoever. I'm sorry I can't be of any more help.

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