Re: improving efficiency of laptop power

From: Ian Hutchinson (hutch_at_hutchinson.belmont.ma.us)
Date: 05/29/04

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    Date: Sat, 29 May 2004 15:25:53 GMT

    Volker Braun wrote:
    > For acpi use the speedstep-centrino support and configure
    > cpuspeed/whatever governor you are using. I'm currently measuring apm vs.
    > acpi runtime, but this is not finished yet (hmm this would be easier if
    > the battery life would not be so damn long :-)
    >
    Actually you can use the speedstep-centrino via a module perfectly well
    with APM in kernels up to 2.4.21(?). However, for some reason it seems
    to be removed from some later kernels. Anyway it definitely speeds down
    things. This is described in

    http://silas.psfc.mit.edu/tp41setup.html#tth_sEc6.11

    after which you will find other comments on power saving.

    Ian Hutchinson

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