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    T420 random hibernations

    Discussion in 'Lenovo' started by Shamoke, Jun 9, 2011.

  1. Shamoke

    Shamoke Notebook Consultant

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    Im experiencing random auto-hibernations. When i reboot, it says it hibernated due to critical battery even though my battery was at 80% when it happened. When I put it on standby w/ 80% battery, after a couple minutes of being unplugged it goes to hibernation.

    I also noticed random display dims while I was active on the computer, so im guessing it could be some conflict between the lenovo & windows battery manager? I installed the latest drivers and they still happen when im in battery mode.
     
    Shamoke, Jun 9, 2011
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  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    I had something similar on my T420s yesterday. Just after Power Manager showed about 2 hours remaining the computer hibernated. I resumed it and the battery was at 43%. About an hour and a half later it did the same trick but resuming showed the battery at 7% - down in the right range but still above my 3% trigger point. Personally, I would suspect the BIOS.

    John
     
    John Ratsey, Jun 10, 2011
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  3. jjahshik32

    jjahshik32 Notebook Deity

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    I havnt had this happen to mine so far but I hope this isnt a big issue.

    On a side note: I'm enjoying the heck out of this keyboard. :)
     
    jjahshik32, Jun 10, 2011
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  4. Shamoke

    Shamoke Notebook Consultant

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    So should I be updating the bios or setting something different?

    I want hibernation but it should hibernate at 5%
     
    Shamoke, Jun 10, 2011
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  5. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    I'm running the latest BIOS and power manager software on my T420s so we will have to wait until Lenovo issue an update. I hope they are aware of this bug.

    John
     
    John Ratsey, Jun 11, 2011
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  6. Colonel O'Neill

    Colonel O'Neill Notebook Deity

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    It used to happen a lot to my T400 at first, never happens now. It might just be a random dip in the current or voltage that causes the computer to think it's almost out of power.
     
    Colonel O'Neill, Jun 11, 2011
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  7. jxf

    jxf Newbie

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    --Update: I was wrong. That intel driver does not fix the hibernation on battery issue. I still got a random sleep this morning (since I changed the critical action to sleep). I just changed the action to "do nothing" and will see what happens.

    I have the same issue as well as others (randomly fail to sleep/shut down then throw a BSOD) until one day all the usb port are dead.
    These all seems to be fixed after I updated to the latest driver of intel storage. I did this just two days ago and no more issues so far. And I have to install it in safe mode otherwise the installer stops responding. ( http://downloadcenter.intel.com/con...19607/eng/iata_enu.exe&lang=eng&Dwnldid=19607)
    It's a shame of lenovo that they didn't ship with the latest driver, which is actually half year old, nor do they provide it in the system update software.
     
    jxf, Jun 29, 2011
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