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Thread: Laptop cpu frequency scaling on battery.

  1. #1
    Join Date
    Nov 2007
    Location
    NC, USA
    Beans
    829
    Distro
    Ubuntu 12.04 Precise Pangolin

    Laptop cpu frequency scaling on battery.

    I have laptop-mode installed already but it doesn't seem to be functioning properly. Here is what I would like.

    Plugged in = ondemand governor
    On battery = conservative governor

    It was changing like it should for a while but stopped all of a sudden. I figured out how to change the gov on all cores using the -r switch with cpufreq-utils, because my panel monitor was showing that only core0 was changing like it should.

    I was thinking about making a hackish cronjob to check on_ac_power every 5 minutes and change accordingly, but there must be a better/easier way.



    Thanks.
    Linux User #460341 || Ubuntu User #19510 || Unanswered Posts Team

  2. #2
    Join Date
    Aug 2011
    Beans
    327
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Laptop cpu frequency scaling on battery.

    Remove Laptop mode and install Jupiter which does this automatically and does it well along with other tuning for battery life. You can find Jupiter at Web8upd ppa https://launchpad.net/~webupd8team/+archive/jupiter

  3. #3
    Join Date
    Jan 2008
    Location
    Brooklyn, NY
    Beans
    167
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Laptop cpu frequency scaling on battery.

    +1 for Jupiter

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