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    T61p on Vista: Brightness fixed to MAX

    Discussion in 'Lenovo' started by Dema80, Sep 16, 2008.

  1. Dema80

    Dema80 Notebook Geek

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    Hi all, I have a new problem with my t61p. The brightness controls (Fn + Home/End) stopped working while on Vista. Adjusting it from Mobility Center does not work either. The funny thing is that the OSD works, and the controls work as well while not using Vista. It also used to work some time ago (but I can't recall what I did meanwhile.. :( )
    I have a Quandro 570FX, with 177.84 drivers. Anyone here have the same problem? Could be a video driver related issue? Thanks!
     
    Dema80, Sep 16, 2008
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  2. Dema80

    Dema80 Notebook Geek

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    Bump? Anyone else with this issue?
     
    Dema80, Sep 17, 2008
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  3. tdesaix

    tdesaix Newbie

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    I have seen this on my wifes T61p, although hers got stuck well below max. I rebooted and it seemed to go back to normal. Probably a video driver issue where the thinkvantage app that handles brightness up/down looses communication with the video driver.
     
    tdesaix, Sep 17, 2008
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  4. rionale

    rionale Notebook Geek

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    Ive also sometime this issue, but only if i turn on off a few times into the styndby mode...
     
    rionale, Sep 17, 2008
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  5. marcbe

    marcbe Notebook Consultant

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    Yes, thats an annoying problem that I've seen many times. It always seem to occur when getting back from an hibernate or sleep state. If you reboot, you get it back working... But it's a bit unpractical to reboot each time. I hope they fix that someday.
     
    marcbe, Sep 18, 2008
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