On Wed, May 5, 2010 at 12:38 AM, Paul Fox <p...@laptop.org> wrote: > martin wrote: > > > > Running powertop on your machine is hugely informational once you've > > read the powertop website docs. > > re: powertop -- with silbe's help our battery driver now provides > enough of the expected properties under /sys to let powertop make > crude power measurements [1]. you have to build from their svn, > though, because of a bug that's not normally exposed on machines > using the ACPI driver. (to clarify -- i have the fix -- it's not > in their svn repo yet -- i need to send it in.) > > but as richard implied, a tool like powertop won't help you tune > your laptop much, since it only measures what happens when it's > running. we save so much power with aggressive S3 that the changes > from P-states, and to some extent C-states, are in the noise. >
I see, cool. I must say I'm very surprised by how long the XO 1.5 can hold the battery when it's suspended. I have yet to mod my B2 with the wireless ECO and since it always turns off wireless when suspended IIRC it used like 12% of the battery while suspended for 8 hours. Must check this again, it seemed too good to be true and a great work on the power management details! Best regards, Tiago > > paul > [1] richard's logs and tools are far more informative, but it's > fun watching the powertop numbers change. > =--------------------- > paul fox, p...@laptop.org > _______________________________________________ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel >
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