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Thread: LCD brightness buttons ineffective on HP nx9420 (Radeon X1600)

  1. #1
    Join Date
    Apr 2007
    Beans
    28

    LCD brightness buttons ineffective on HP nx9420 (Radeon X1600)

    Hi,

    I was having some problems with this on Intrepid but hoped that the upgrade to Jaunty would help - but it hasn't.

    On my nx9420 I have LCD brightness buttons on the top of the keyboard. The display is dim and doesn't change despite being on AC power or the buttons being used.

    Pressing the buttons does trigger the screen brightness applet in the top right corner of the screen but the screen's brightness doesn't change. Not sure how to troubleshoot this issue so would appreciate some guidance from someone who knows more.

    Thanks in advance.

    George

  2. #2
    Join Date
    Jun 2007
    Beans
    243

    Re: LCD brightness buttons ineffective on HP nx9420 (Radeon X1600)

    Same problem here. Also experienced the same issue with Archlinux (on the stock 2.6.31 kernel).
    Ubuntu x86_64: AMD Turion X2 1.9ghz, 4GB RAM, 250GB HDD, NVidia 7150m
    Windows 7: AMD Phenom II x4 965 BE 3.6ghz, 8GB RAM, 1.5TB HDD, ATI Radeon HD 4870

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