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Thread: Ubuntu 17.10: Unexpected shutdowns on battery power

  1. #1
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    Aug 2013
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    Ubuntu 17.10: Unexpected shutdowns on battery power

    Hello there!
    I am running Ubuntu 17.10 om an Asus Zenbook ux31a.
    I have been running 16.04 for several years on this laptop without any problems.
    Unfortunately my system became unstable and started shutting down unexpectedly. It seemed to be only when it was running on battery power.
    This ended up severely damaging the system. I have bought a new battery and installed a clean version of 17.10 on the system.
    But I am still experiencing sudden shutdowns when on battery power. No problems when on ac.
    I have been watching the system temperatures and battery power using the sensors and PowerTop commands. No clues there.
    And I have altered the percentages for when the laptop shuts itself off due to low/critical power. Didn't help.
    I was wondering if there is anyone who could suggest further troubleshooting solutions?
    Especially to determine whether it is a hardware or software problem.

  2. #2
    Join Date
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    Re: Ubuntu 17.10: Unexpected shutdowns on battery power

    It is possible that the battery has reached the end of its service life.

    They should be replaced every three years or so as a maintenance action.
    Last edited by rbmorse; February 24th, 2018 at 01:16 AM.
    regards

  3. #3
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    Re: Ubuntu 17.10: Unexpected shutdowns on battery power

    Thanks. But I just replaced the battery.
    Thats why I was wondering whether it was a problem with the new battery or something else.
    But not sure how to go about troubleshooting it...

  4. #4
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    Re: Ubuntu 17.10: Unexpected shutdowns on battery power

    How long does it take to drain the battery or to shutdown?

  5. #5
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    Lubuntu 17.10 Artful Aardvark

    Re: Ubuntu 17.10: Unexpected shutdowns on battery power

    Well if you bought a new battery and it still doesn't charge, then chances are it's either a problem with the laptop mechanics or the Ubuntu software. To me it seems like it's the laptop mechanics if it unexpectedly shuts down without Ubuntu doing it for you.

    I want to confirm what you mean by "shutting down unexpectedly" though. Do you mean that the laptop shuts down immediately to a black screen without warning, or that Ubuntu shuts down for you?
    Last edited by sccman; February 24th, 2018 at 04:01 PM.

  6. #6
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    Re: Ubuntu 17.10: Unexpected shutdowns on battery power

    Well the battery charges, and seems to have the expected life according to PowerTop.
    But it shuts down immediately - as in black screen no ubuntu actions - around the 70% mark.
    And doens't do this when on the mains power.

  7. #7
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    Re: Ubuntu 17.10: Unexpected shutdowns on battery power

    Check also your power cable. Is everything alright? I had once a machine where the culprit was a defective power cable.

  8. #8
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    Re: Ubuntu 17.10: Unexpected shutdowns on battery power

    It always the cable....<g>

    Seriously, there is a slim possibility that the new battery is defective. The symptoms certainly sound like a bad cell. It happens, especially if you buy a third-party brand at an especially low price.
    Last edited by rbmorse; February 26th, 2018 at 05:20 PM. Reason: typo
    regards

  9. #9
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    Re: Ubuntu 17.10: Unexpected shutdowns on battery power

    Quote Originally Posted by rbmorse View Post
    It always the cable....<g>

    Seriously, there is a slim possibility that the new battery is defective. The symptoms certainly sound like a bad cell. It happens, especially if you by a third-party brand at an especially low price.
    Which is of course exactly what I did!
    Thanks for the suggestions. I think I'll go back to the battery provider...

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