[ltp] Re:battery suggestion

Damien Challet linux-thinkpad@linux-thinkpad.org
Sun, 9 Dec 2007 09:39:56 +0100


On Sunday 09 December 2007 00.31:49 Riccardo Paterna wrote:
> >> There was this USB bug which caused laptops to never go into the C3
> >> power state, that could be it. Or i could be wrong ;)
> >
> > 2h vs 7h sounds more like the CPU is kept at it's highest clock speed.
> > Either that, or you have something very power hungry dongling from your
> > USB ports.
> >
> > Daniel
>
> The cpu scaling workfine now i try to recompile kernel with
> thinkpad-acpi patch, but the battery duration is the same, Now i can
> shutdown the fan ... but i can't understad why the duration is only 2
> hours..some one with an Ibm x60 with linux can tell me the battery
> duration? Now I use ubuntu 7.10 with kernel 2.6.24rc4 with all
> optimization take from powertop.

I suggest that you have a look at your power consumption

cat /proc/acpi/battery/BAT0/state

and compare it with the figures listed in 

http://www.thinkwiki.org/wiki/Idle_consumptions