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Thread: Battery savings.

  1. #1
    Join Date
    Apr 2008
    Location
    Belgium
    Beans
    174
    Distro
    Ubuntu Karmic Koala (testing)

    Battery savings.

    normally (windows xp) my battery lasts for over 4 hours if i turn my screen on low brightness.

    but ever since i fully switched to Ubuntu i get a miserable 1- 1.5 hours.

    i read some things about:
    hdparm
    Dynamic Tick
    and this site:
    http://www.lesswatts.org/projects/powertop/

    but it didn't make me any wizer on the subject.

    so, is there any guide on here so i can get my 4 hours of battery life back . (i did look around but maybe you can recommend the best option)

    Dell latitude d830 Ubuntu 7.10.
    average ram use: 200
    cpu: idl (slideshows or Pdf files)

  2. #2
    Join Date
    Jul 2007
    Location
    In the trees . . .
    Beans
    353
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Re: Battery savings.

    I must be lucky. I bought a new computer with Vista pre-installed. With Vista I get about 55 minutes, even on the power-saver setting with the brightness all the way down and the volume off. With Ubuntu I get about double, even when I'm running it full bore. I just don't understand how there can be such a huge difference either.
    Make sure to use a descriptive title for your threads.
    Registered Ubuntu User #21746
    Not all Who Wander Are Lost . . . . .

  3. #3
    Join Date
    Sep 2007
    Beans
    611
    Distro
    Ubuntu Development Release

    Re: Battery savings.

    8.04 has quite a few new power saving features, i find that my battery usually lasts longer in ubuntu

    powertop is used for 8.04, it basically allows people to see how to make their programs use less power

    enabling laptop mode also might help
    Last edited by twright; April 24th, 2008 at 11:52 AM.
    Free as in freedom, not as in beard.

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