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    Graphics card won't switch

    Discussion in 'Lenovo' started by Arez20469, Sep 11, 2008.

  1. Arez20469

    Arez20469 Notebook Enthusiast

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    First, I have Windows XP installed on this machine (since I dislike Vista).

    Anyway, when I first started my t400, I noticed it was using "Video ATI Mobility Radeon HD 3400 Series" which is the integrated graphics card. So, I went into the bios to change that and noticed it was already set to use the dedicated graphics. I re-selected that option, restarted, and PC Wizard still says I'm using the 3400.

    Should I select the integrated, restart, then select then dedicated again? what am I doing wrong? It's supposed to be using the dedicated as that's what was already selected by default...

    Edit:

    If I select Integrated Graphics in bios I get this:

    Intel Corporation Mobile Integrated Graphics Controller

    If I select discrete graphics I get this:

    Video ATI Mobility Radeon HD 3400 Series

    If I set it to integrated, it lags really bad and asks me to install a bunch of drivers so I dont think its even using the integrated.

    how do i fix this...
     
    Arez20469, Sep 11, 2008
    #1
  2. janko10

    janko10 Notebook Consultant

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    I don't think you have the right drivers installed. Did you use one set of drivers (the ATI drivers) for BOTH cards/GPU's? That's what you need to do. Don't install the Intel Graphics card driver on Lenovo.com. You use the ATI driver for BOTH cards.

    Follow my install procedure for Vista here:

    http://forum.notebookreview.com/showthread.php?t=294974

    It will work for XP as well, except you can't switch cards while loaded in XP, only in the BIOS.
     
    janko10, Sep 11, 2008
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  3. keltix

    keltix Notebook Deity

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    That's the DEDICATED.

    You do have to install drivers to the integrated, that's what it's asking you for when you boot into integrated.
     
    keltix, Sep 11, 2008
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  4. keltix

    keltix Notebook Deity

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    why not? i did it works fine.
     
    keltix, Sep 11, 2008
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  5. lanxsworld

    lanxsworld Notebook Guru

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    BIOS?
    I just thought you can switch it in windows
     
    lanxsworld, Sep 11, 2008
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  6. keltix

    keltix Notebook Deity

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    only VISTA, at least for now
     
    keltix, Sep 11, 2008
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  7. lanxsworld

    lanxsworld Notebook Guru

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    using ATI drivers for both cards?
    Are you kidding??
     
    lanxsworld, Sep 11, 2008
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  8. janko10

    janko10 Notebook Consultant

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    No, I'm not.

    But thinking about it more, that driver may only be pertinent to Vista.
     
    janko10, Sep 11, 2008
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  9. janko10

    janko10 Notebook Consultant

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    Actually, you're right, you could for XP since you can't switch on the fly.
     
    janko10, Sep 11, 2008
    #9