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    X220 Noise when on battery

    Discussion in 'Lenovo' started by lpfan41k, Jul 13, 2011.

  1. lpfan41k

    lpfan41k Notebook Enthusiast

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    So I started hearing a high pitch whine around the area of my ram slots when using chrome and that led me to investigate said noises. Found it only happens with chrome and not firefox and ie9.

    However, even when not using chrome, there is an audible noise- cpu like- from the ram slot area. The noise seems to go away when the computer is plugged in to the power adaptor. Anyone have experience with this?
     
    lpfan41k, Jul 13, 2011
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  2. wstore

    wstore Newbie

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    I notice this too.. Not on X220, buat E420.
    Try disabling the CPU Power Management in BIOS, them try it without power source. Does it fix your problem ?
     
    wstore, Aug 2, 2011
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  3. floz23

    floz23 Notebook Evangelist

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    The effect is called microphonics.

    It is unfortunately normal behavior. I bet it is happening with chrome, because chrome modifies the "platform timer resolution".
     
    floz23, Aug 2, 2011
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  4. wstore

    wstore Newbie

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    That is sad news, muting the speaker doesn't work as well :(

    Guess have to sacrifice battery life then :|
     
    wstore, Aug 3, 2011
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  5. Sally4

    Sally4 Notebook Geek

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    Try using Opera. A better browser and power-efficient.
     
    Sally4, Aug 3, 2011
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  6. Colonel O'Neill

    Colonel O'Neill Notebook Deity

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    Or Firefox Aurora/Nightly. Throw on Adblock Plus and NoScript for maximum speed.
     
    Colonel O'Neill, Aug 3, 2011
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