MINI DVI TO DVI LAG (24inch)

Discussion in 'Mac mini' started by richiejenkins, Mar 14, 2009.

  1. richiejenkins macrumors newbie

    Joined:
    Jan 18, 2009
    #1
    Hey guys, any help would be great.

    I basically i have a iMac 24 inch with a nvidia 8800 and i also have a dell 24 inch which is hooked up using the mini dvi to dvi. It works, however is laggy and shows it when moving windows etc. It's kinda of very annoying.

    Why does it do this?

    How do i fix it?

    Do i need to get something else?
     
  2. richiejenkins thread starter macrumors newbie

    Joined:
    Jan 18, 2009
  3. mcavjame macrumors 65816

    mcavjame

    Joined:
    Mar 10, 2008
    Location:
    phased to this universe
    #3
    How much RAM do you have in the system. The lag is not likely due to the card, but could be disk caching when switching between apps. More RAM will mean less disk access for multiple windows open.
     
  4. richiejenkins thread starter macrumors newbie

    Joined:
    Jan 18, 2009
    #4
    2GB, i don't think that's the cause, because it does it with only 1 thing open. No lag shows on the imac display just the secondary.

    Maybe 1920 x 1200 is a bit much for the mini dvi to dvi adapter to handle?
     
  5. Spanky Deluxe macrumors 601

    Spanky Deluxe

    Joined:
    Mar 17, 2005
    Location:
    London, UK
    #5
    The adapter's just a passthrough of a dvi signal, it wouldn't introduce lag. What graphics card do you have in your iMac? To be honest, this sounds a bit odd. Are you sure you're not imagining it? What does it look like? By 'lag', what exactly do you mean and how can you tell?
     
  6. richiejenkins thread starter macrumors newbie

    Joined:
    Jan 18, 2009
    #6
    Thanks for the replay,

    I have a nvidia 8800 in my iMac. I am pretty sure I'm not imaging it :)

    By lag i mean slow moving windows etc and effect's slow.

    Cheers
     
  7. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #7
    Is Quartz Extreme enabled in System Profiler?
     
  8. richiejenkins thread starter macrumors newbie

    Joined:
    Jan 18, 2009
    #8
    Hope this helps

    Displays:

    iMac:
    Resolution: 1920 x 1200
    Depth: 32-bit Color
    Core Image: Hardware Accelerated
    Main Display: Yes
    Mirror: Off
    Online: Yes
    Quartz Extreme: Supported
    Built-In: Yes

    DELL 2408WFP:
    Resolution: 1920 x 1200 @ 60 Hz
    Depth: 32-bit Color
    Core Image: Hardware Accelerated
    Mirror: Off
    Online: Yes
    Quartz Extreme: Supported
    Rotation: Supported
     
  9. richiejenkins thread starter macrumors newbie

    Joined:
    Jan 18, 2009
    #9
    Probably the better term to add here is the windows are ghosting
     
  10. Spanky Deluxe macrumors 601

    Spanky Deluxe

    Joined:
    Mar 17, 2005
    Location:
    London, UK
    #10
    Sounds like your second display might be faulty. :(
     
  11. richiejenkins thread starter macrumors newbie

    Joined:
    Jan 18, 2009
    #11
    Just had a quick research on the Dell 2408wfp, i think you could be right. Allot going on about it suffering from input lag.
     

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