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    anyone here know about ACPI? (brightness control)

    Discussion in 'VAIO / Sony' started by violineb, Jan 29, 2008.

  1. violineb

    violineb Newbie

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    long story short. I'm trying to downgrade my friend's Sony Vaio VGN-C240E laptop from Vista to XP. Unfortunately I ran into one final snag and it's a big one.

    I have no way of changing the screen brightness. I was wondering if anyone knows how to do something similar to what was done on this blog.
    http://bkhan.wordpress.com/2007/12/09/windows-xp-downgrade-drivers-on-sony-vaio-vgn-nr120e-model/
    Scroll down to Brightness Control Fix. It's a custom coded thing which appears to edit the ASPI settings. I REALLY REALLY want to do this but don't know how.

    The reason it doesn't work for this laptop is because it was coded for a GMA965 card and this laptop uses a GMA945. Does anyone here have the knowledge or patience to help?

    Thanks,
    Emmanuel
     
    violineb, Jan 29, 2008
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  2. ScuderiaConchiglia

    ScuderiaConchiglia NBR Vaio Team Curmudgeon

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    Can't help you with the screen issue. But, your friend may have another issue as well. There may be no power management under XP.

    Gary
     
    ScuderiaConchiglia, Jan 29, 2008
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  3. violineb

    violineb Newbie

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    no need for power management when you have RMClock and NHC. Windows XP does have the power management but I don't know if it works. Screen brightness definitely didn't.
     
    violineb, Jan 29, 2008
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