Re: Fedora 9 On Laptop battery

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On Wed, 25 Jun 2008 18:03:33 -0500
Tom <tbrinkman@xxxxxxxxxxxxx> wrote:

> On Wednesday 25 June 2008 05:41:25 pm Fastie wrote:
> > Hi
> >
> > I have been working on Fedora since Core 6, and found that now I've moved
> > i've had to start using my battery more on my laptop than I used to. So my
> > battery just doesn't last. I  got myself a replacement thinking that my
> > battery is dead but still had the same result.
> > I am running an HP NC6320 laptop with nothing extra (clean install). My
> > brightness is on the lowest setting.
> > I went through my services and stopped all the ones I don't need and
> > installed powertop and did what it told me to do, (but it is not permanent
> > for one).
> > According to HP my battery should last about 4 hours, however I only get
> > about 1.5 hours if I am lucky. I have to say when I was testing this on
> > Windows I did not get 4 hours as HP say but got about 3 hours. So running
> > Fedora cut my battery time in half.
> > One thing I did see on powertop is that my "Wakeups-from-idle per second"
> > is running at "669.1    interval: 10.0s", this looks high. How do you
> > reduce this?
> > Is there anything else I can do to get more battery power out of it?
> >
> > Thanks
> > Chris
> 
>   try, in /etc/rc.local
> 
> /sbin/hdparm -B 255 /dev/sda
> 
>   Please don't top post anymore 
> 

The laptop mode tools are handy too, see http://samwel.tk/laptop_mode/

-- 

Brian Morrison

   "Arguing with an engineer is like wrestling with a pig in the mud;
    after a while you realize you are muddy and the pig is enjoying it."

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