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    P570WM?120HZ Panel?brightness control does not work

    Discussion in 'Sager and Clevo' started by Wresinski, Sep 22, 2016.

  1. Wresinski

    Wresinski Notebook Enthusiast

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    Hi techs,

    i have a P570WM with 120hz LCD.but there is not an internal 3D emitter in the model.And the motherboard is V2.3A.
    When i flashed WM3 BIOS,I can use 3D VISION with USB 3D emitter and 3D glasses.But i can't adjust the brightness.(the brightness can be adjust with WM BIOS.)
    When i enter the BIOS Setup interface,i can adjust the brightness.But when i enter the windows,i can't do it anymore.

    I found that the 3D model with V2.2A motherboard and internal 3D emitter can adjust the brightness in WM3 BIOS.So what caused this difference?motherboard?LCD panel?OR internal 3D emitter?

    How can i make brightnesscontrol work with WM3 BIOS?or can i do something to convert it to a 3D mode?

    thanks for your help.
    QQ图片20160922173920.jpg
     
    Last edited: Sep 22, 2016
    Wresinski, Sep 22, 2016
    #1
  2. CaerCadarn

    CaerCadarn Notebook Deity

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    Maybe @Prema can share some insight on this?
     
    CaerCadarn, Sep 22, 2016
    #2
  3. Prema

    Prema Your Freedom, Your Choice

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    Probably NVIDIA driver problem...

    Try to add it manually:

    1) Open regedit and go to the "HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/Class" key.
    2) Find the sub-key corresponding to the NVIDIA graphics adapter. I did this by going to Find in the Edit menu and searching for "nvidia".
    3) Add a new DWORD called "EnableBrightnessControl" and set the value to 1.
    4) Reboot and the brightness keys should work again.
     
    Prema, Sep 22, 2016
    #3
    i_pk_pjers_i, CaerCadarn and Meaker@Sager like this.