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Thread: HOWTO: powernowd tip

  1. #1
    Join Date
    Feb 2005
    Location
    Windsor, California
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    280
    Distro
    Ubuntu 7.10 Gutsy Gibbon

    HOWTO: powernowd tip

    I run Hoary on a laptop and it, per default, loads the powernowd daemon at startup. This was kind of annoying because I don't care about CPU frequency when my laptop is plugged in - especially when the cool screensavers were running. As such, I wanted mt laptop to not run powernowd when it's plugged in.

    To accomplish this, I had to do two things:
    1. Modify the /etc/init.d/powernow init script to check the ac power is disconnected before starting the daemon
    2. Modify the /etc/acpi/power.sh script to start and stop the daemon appropriately.

    Enjoy!
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    come on guys, it's all ball bearings nowadays

  2. #2
    Join Date
    Mar 2005
    Beans
    7

    Re: HOWTO: powernowd tip

    Hi, thanks for the tip. It works allright.

    Seems from a lot of other forums people have the same problem and this tip certianly helps.

    It would be good if a laptop section could be created and maintained with tips, howto's etc.

    Anyway thanks - Brian

  3. #3
    Join Date
    Mar 2005
    Beans
    12

    Re: HOWTO: powernowd tip

    Thanks alot!

  4. #4
    Join Date
    Feb 2005
    Beans
    126
    Distro
    Ubuntu 13.04 Raring Ringtail

    Re: HOWTO: powernowd tip

    How about :
    apt-get remove powernowd

  5. #5
    Join Date
    Jan 2005
    Location
    Illinois USA
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    1,047

    Re: HOWTO: powernowd tip

    Quote Originally Posted by Anubis
    How about :
    apt-get remove powernowd
    Umm, that removes it. You can't use something if you uninstall it.
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  6. #6
    Join Date
    Mar 2005
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    76

    Re: HOWTO: powernowd tip

    kind of off-topic, but what exactly is the purpose of powernowd?
    I know it runs AMD Cool & Quiet, but is that even a good idea to run on a desktop?

  7. #7
    Join Date
    Jan 2005
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    Illinois USA
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    Re: HOWTO: powernowd tip

    Quote Originally Posted by Muchacho_Gasolino
    kind of off-topic, but what exactly is the purpose of powernowd?
    I know it runs AMD Cool & Quiet, but is that even a good idea to run on a desktop?
    http://freshmeat.net/projects/powernowd/
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  8. #8
    Join Date
    Mar 2005
    Location
    Morgantown, WV
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    96
    Distro
    Xubuntu 13.04 Raring Ringtail

    Re: HOWTO: powernowd tip

    That answers the 'What is it?' part, but what about the rest? Is it necessary, or wise, to run powernowd on a desktop?

    Granted, it does save a bit of wear on my overclocked 2500+

  9. #9
    Join Date
    Nov 2004
    Location
    France
    Beans
    55

    Re: HOWTO: powernowd tip

    Nice tip !!!

    But maybe it's possible to improve it ?
    I had notice this :
    - when I'm booting with AC, the CPU working at 100%. OK no problem.
    - when I'm unplugging the AC during the laptop is power on, the CPU slow down to work at 50%. OK, perfectly
    - if I re-plugged AC without rebooting the laptop, the CPU is still working at 50%. Is it possible to make it work at 100% again automaticaly, without rebooting ?

  10. #10
    Join Date
    Nov 2004
    Location
    Toronto, Canada
    Beans
    23

    Re: HOWTO: powernowd tip

    Interesting approach. I solved this problem using a different technique. Instead of powernowd, I installed "cpufreqd". Its a daemon similar to powernowd, but their default policy is something I like much better. Its more customizable than powernowd, and keeps my laptop at 100% cpufreq when I am plugged into AC power.

    HOWTO:

    Code:
    sudo apt-get install cpufreqd

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