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M17x R2 8970M Brightness control?

Discussion in 'Alienware 17 and M17x' started by Raidriar, Nov 13, 2017.

  1. Raidriar

    Raidriar Notebook Prophet

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    I installed my Clevo 8970M into my M17x R2 tonight, and it is working with native fan control, but brightness is broken, stuck to max brightness. adjusting slider does nothing. any fix? Running windows 7

    Single 8970M bench with a 940XM
    https://www.3dmark.com/3dm11/12488143
     
    Last edited: Nov 13, 2017
  2. Danishblunt

    Danishblunt Notebook Deity

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    Did you try other drivers just to check?
     
  3. Raidriar

    Raidriar Notebook Prophet

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    You know, I went ahead and tried the past several re-live drivers, they all stuck my brightness at maximum. So i tried the final catalyst 2015 driver before they changed to crimson, and brightness works. Will do some investigating....
     
  4. goodstone

    goodstone Notebook Consultant

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    I remember this on my R2 when upgrading to windows 8. You need to change registry keys. Unfortunately I cannot remember which ones. I will try to hunt down .
     
  5. goodstone

    goodstone Notebook Consultant

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    Found it. Try this might work.

    HKEY_LOCAL_MACHINE> SYSTEM> ControlSet001> Control> Class> {4d36e968-e325-11ce-bfc1-08002be10318}> 0000> KMD_EnableBrightnessInterface2 to 0

    Reboot!
     
  6. andrewff2

    andrewff2 Notebook Consultant

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    Hey there man!!! I have one 8970m too and w10+amd driver are killing me.

    Did you find any native way to make the brightness work? or shoul i go to old drivers as well? do you recommend any old driver version???
     
  7. Raidriar

    Raidriar Notebook Prophet

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    Nope, never found a resolution with newer drivers.
     
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