[PC-BSD Testing] Tuning power consumptions on notebooks

M. Warner Losh imp at bsdimp.com
Thu Sep 16 08:23:42 PDT 2010


In message: <20100916123300.GH59295 at e.0x20.net>
            Lars Engels <lars.engels at 0x20.net> writes:
: Hey Kris et al.,
: 
: 
: I think a pretty low hanging fruit to grab for a longer battery life on
: notebook would be to implement mav's howto to tune the power consumption
: on notebooks: http://wiki.freebsd.org/TuningPowerConsumption

The few sysctls are likely best.  Mav@ did advocate desoldering parts,
which is kinda hard to do from the installer.

: Perhaps the installer could ask if the installation is to a notebook and
: set the right sysctls?

We already detect that by detecting a batter :)

: There are also some vendor-specific acpi modules acpi_ibm, acpi_asus,...
: The Vendor can automatically determined with 'dmidecode -s
: system-vendor', so the installer can ask if the module should get loaded
: at boot time.

better to load them all in the installer, and see which one(s) attach
and put only those in the loader.conf you need.

Warner


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