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    can't adjust screen brightness

    Discussion in 'HP' started by zronnie, Sep 18, 2010.

  1. zronnie

    zronnie Newbie

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    Lately when coming out of standby on my Envy 14, i am unable to adjust the screen brightness unless i reboot. Any suggestions?
     
    zronnie, Sep 18, 2010
    #1
  2. el_rodento

    el_rodento Newbie

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    I also have this problem. After coming out of standby or hibernate, the brightness keys do not work at all. The other fn keys are fine though.
     
    el_rodento, Sep 20, 2010
    #2
  3. divertankado

    divertankado Notebook Consultant

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    I recommend updating your bios and upgrading to the latest ATI video drivers.
     
    divertankado, Sep 20, 2010
    #3
  4. neothe0ne

    neothe0ne Notebook Consultant

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    It's random. Hopefully a (newer) BIOS update will fix it for good.
     
    neothe0ne, Sep 22, 2010
    #4
  5. LoopyDeLoop

    LoopyDeLoop Notebook Enthusiast

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    same problem here.
    Is there known solution for this bug?
    bios version is f.23
    no switchable graphics ( core i7-720 ).
    Latest ATI drivers ( 08/03/2011 version ).
    Happens always if I close the lid (sleep) while connected to AC power, and open the lid while disconnected.
    Brightness box disappears from "Windows Mobility Center".
    If rebooting functionality returns.
    Can someone confirm this bug too?
     
    LoopyDeLoop, Apr 12, 2011
    #5
  6. ncc1701k

    ncc1701k Notebook Consultant

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    quick fix: change your lid close action to "nothing"
    quickly close the lid and reopen it, brightness should work again.
     
    ncc1701k, Apr 12, 2011
    #6
  7. kev007

    kev007 Notebook Enthusiast

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    bug is definitely there but can be prevented by removing the power chord BEFORE closing the lid
     
    kev007, May 15, 2011
    #7
  8. abaddon4180

    abaddon4180 Notebook Virtuoso

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    The problem seems random but this fix works for me.
     
    abaddon4180, May 15, 2011
    #8
  9. r00bin

    r00bin Notebook Consultant

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    Just wanted to let you all know, this workaround also works for me with my Dell Precision M4400
     
    r00bin, Sep 4, 2011
    #9
  10. fetflex

    fetflex Notebook Enthusiast

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    Anyone ever got this fixed. I have an Envy 15 and experiencing the same problem.
     
    fetflex, Dec 3, 2011
    #10
  11. MagusDraco

    MagusDraco Biiiiiiirrrrdmaaaaaaan

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    it just happens due to stupid amd drivers and/or other things.

    I'm on 11.11c and it doesn't happen to me.

    'course I instead get the fun "black screen coming outta standby gotta put the lid down like 2 or 3 more times before the screen comes back" bug that started showing up with AMD's 11.10 drivers.
     
    MagusDraco, Dec 4, 2011
    #11
  12. h8isgr8

    h8isgr8 Notebook Consultant

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    ^ I get the black screen after wake as well as no brightness control on 11.11c.
     
    h8isgr8, Dec 5, 2011
    #12
  13. MagusDraco

    MagusDraco Biiiiiiirrrrdmaaaaaaan

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    weird. I at least get brightness controls, I think.

    edit: I take that back. I don't get brightness controls for like 5 to 10 seconds. Then the fan kicks in to overdrive for a second (like it's swapping gpus or something, but it is not) and brightness controls come back

    Also I don't always get the black screen.
     
    MagusDraco, Dec 5, 2011
    #13