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    unstable fan and high-pitched trackpoint noise

    Discussion in 'Lenovo' started by bobasaurus, Sep 23, 2007.

  1. bobasaurus

    bobasaurus Newbie

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    I powered up my T61 today and noticed that the fan did not come on at all. This is odd, since the fan usually starts right away and runs continuously. tpfancontrol showed a temperature of 51 degrees C. Then I noticed something else odd... whenever I move the cursor with the trackpoint or touch pad, a high pitched whine is emitted, even when the volume is muted. The whine only sounds when the cursor is moving. I rebooted, and the fan came on properly, but the cursor whining noise continues. It seems like the sound is coming from the area close to the power and volume buttons. I just installed Lenovo's Power Manager software... I wonder if that has anything to do with it... I had the bios power options set to adaptive when I first noticed the whine. Changing to other settings doesn't seem to help. Any suggestions? I will try to boot into knoppix to see if it's a software/driver issue.
     
    bobasaurus, Sep 23, 2007
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  2. bobasaurus

    bobasaurus Newbie

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    Some more information: The whine does not occur when I boot into knoppix, so it's a software problem in windows, somehow. I also noticed that the whine is louder when running on battery.
     
    bobasaurus, Sep 23, 2007
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  3. jeffsiler

    jeffsiler Notebook Guru

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    Disable CPU power management in the bios. Its related to the sleep state that the Intel processor is going into.

    Jeff
     
    jeffsiler, Sep 23, 2007
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  4. unhooked

    unhooked Notebook Deity

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    Search for "CPU whine". There are few threads to check.
     
    unhooked, Sep 23, 2007
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  5. gridtalker

    gridtalker Notebook Virtuoso

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    Didn't a bios update fix the whine problem?
     
    gridtalker, Sep 24, 2007
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  6. unhooked

    unhooked Notebook Deity

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    I haven't heard of a specific bios update fixing the problem.
     
    unhooked, Sep 24, 2007
    #6