How long laptop battery should live ?

Bruce Cran bruce at
Wed Nov 24 11:12:14 UTC 2010

On Tue, 23 Nov 2010 23:17:37 -0600
Adam Vande More <amvandemore at> wrote:

> IIRC, there where some improvement to HEAD while ago that increased
> FreeBSD power usage efficiecy a non-negligible amount.  Perhaps those
> improvements where MFC'd already, Google around either way as there
> are settings to tune which will decrease power consumption.

In order to get those savings you need to set hw.acpi.cpu.cx_lowest to
C2 or C3.

Bruce Cran

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