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    New bug discovered - 90watt ultraslim and full headphone volume

    Discussion in 'Lenovo' started by floz23, Aug 8, 2011.

  1. floz23

    floz23 Notebook Evangelist

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    Ok, I'm posting this as a separate thread, since it was so strange.

    Currently, we know the 90watt ultraslim does funny things to the touchpad, due to grounding issues. Yesterday I discovered something new.

    Upon learning about how to get full power to the headphone jack, I enabled it. I plugged in my 90watt ultraslim and the x220 started making a terrible microphonic whine, like it was screaming, almost. The sound was coming out of the back of the laptop. Also, the battery refused to charge. As soon as I disabled the headphone boost, the laptop accepted the 90watt ultraslim and started charging as normal.

    I'm holding on to the 90watt slim for now, since I only use it for charging, but now after this last find, I think I have to get more compatible adapter...
     
    floz23, Aug 8, 2011
    #1
  2. talin

    talin Notebook Prophet

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    Why not just get the standard 90 watt adapter? I have no such issues with mine. :)
     
    talin, Aug 8, 2011
    #2
  3. floz23

    floz23 Notebook Evangelist

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    Because I want all the features of the travel ultraslim, like a car charging port, and the ability to charge usb devices.
     
    floz23, Aug 8, 2011
    #3
  4. lead_org

    lead_org Purveyor of Truth

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    these problems are related... this is probably due to grounding issues too.
     
    lead_org, Aug 8, 2011
    #4
  5. john46

    john46 Notebook Guru

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    I must have missed that. What's up with that? A link would be welcome.
     
    john46, Aug 9, 2011
    #5
  6. floz23

    floz23 Notebook Evangelist

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    floz23, Aug 9, 2011
    #6