[ltp] Re: Optimal tp_smapi battery parameter values (T400)
Roman Haefeli
linux-thinkpad@linux-thinkpad.org
Wed, 07 Jan 2009 23:53:17 +0100
On Wed, 2009-01-07 at 12:54 +0100, Christoph Bier wrote:
> Peter Jordan schrieb am 07.01.2009 09:02:
>
> > Hello,
> >
> > I have a Lenovo T400 (6-cell-battery) with kernel 2.6.28 with latest
> > tp_smapi and thinkpad_acpi patches on debian unstable.
> >
> > What are the optimal battery parameter values for extending battery life?
>
> http://www.thinkwiki.org/wiki/Maintenance#Battery_treatment
>
> [...]
>
> > Is it normal that i have to set this settings after each reboot of the
> > system?
>
> It depends. AFAIK you only need to set this settings after your
> ThinkPad was completely removed from all power (AC and battery)
> since those settings are saved on the EC.
it seems like the windows thinkpad drivers set the values on each boot,
so after having booted into windows once, those values might be
overriden as well.
roman
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