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J.Keler

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Since: Dec 14, 2008
Posts: 9



(Msg. 1) Posted: Fri Dec 26, 2008 9:20 am
Post subject: battery performance lower then..
Archived from groups: linux>debian>laptop (more info?)
First I want to wish all of you happy holidays and a good time to
whatever you are celebrate.

First I was running Gentoo in my Lenovo ThinPad z61m.
Got bored with the long wait at installing software etc.

Since I changed from gentoo to debian lenny the display performance and
also the battery performance is lower then before.

I have the standard battery which comes with the laptop and also a
battery in the "ultra-Bay" slot. (see details below)

Usually working time (including power on, one or two suspend or
hibernate) was ca. about 2h or less.

Without any interrupts (no power down and hibernate/sleep) the time
would be close to 3h.

Ok it sometimes affects what I do and which programs I run.
So the above times are just the "felt" times. I did not do any tests and
compared the result or stuff like that.

The software I use is the same as I was using on gentoo
(gnome,FF,TB,Zend,vim etc.)

So my question is, what can I do to improve the working time and what
can I check if something is not working as it should.
eg. if there is some "special-debian-power" package or some general
power saving settings which I'm not aware of.

I know this is some very common question, but I think I miss something,
so any answer, even ones with some should have done tasks are welcome.

####
Battery details:
Product: 41u4890
Verndor: Sony
design charge 29.2Wh
charge Rate: 14.3W

(main) battery 2 details
Product: 42t4502
Vendor: Sanyo
design charge: 56.2 Wh
####

j.keler


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Paolo

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Since: Dec 26, 2006
Posts: 32



(Msg. 2) Posted: Fri Dec 26, 2008 11:20 am
Post subject: Re: battery performance lower then.. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
On Thu, Dec 25, 2008 at 10:56:59PM +0100, "J.Ke?ler" wrote:
>
> So my question is, what can I do to improve the working time and what
> can I check if something is not working as it should.
> eg. if there is some "special-debian-power" package or some general
> power saving settings which I'm not aware of.

try laptop-mode-tools

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paolo


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user

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Since: Dec 26, 2008
Posts: 1



(Msg. 3) Posted: Fri Dec 26, 2008 11:20 am
Post subject: Re: battery performance lower then.. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
>eg. if there is some "special-debian-power" package

Did you install something like cpufreqd/cpufreqytils? If no try to do
so and set "powersave" governor.

Mikhail.


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Bogdan

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Since: Dec 26, 2008
Posts: 3



(Msg. 4) Posted: Fri Dec 26, 2008 1:20 pm
Post subject: Re: battery performance lower then.. [Login to view extended thread Info.]
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Hi,

no extra tools/daemons needed to scale CPU frequency - see http://technowizah.com/2007/01/debian-how-to-cpu-frequency-management.html ; worked for me on all computers I tried.

you might also want to tweak HDD energy saving parameter (using hdparm) ; exact options depend on what capabilities your HDD has.

Bogdan

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- http://www.hostpro.ua


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J.Keler

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Since: Dec 26, 2008
Posts: 1



(Msg. 5) Posted: Fri Dec 26, 2008 1:20 pm
Post subject: Re: battery performance lower then.. [Login to view extended thread Info.]
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thx I gonna try this. !

Bogdan wrote:
> Hi,
>
> no extra tools/daemons needed to scale CPU frequency - see http://technowizah.com/2007/01/debian-how-to-cpu-frequency-management.html ; worked for me on all computers I tried.
>
> you might also want to tweak HDD energy saving parameter (using hdparm) ; exact options depend on what capabilities your HDD has.
>
> Bogdan
>
> -- реклама -----------------------------------------------------------
> Домен БЕСПЛАТНО!
> С хостинг-планом на http://www.hostpro.ua
>
>


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J.Keler

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Since: Dec 14, 2008
Posts: 9



(Msg. 6) Posted: Fri Dec 26, 2008 1:20 pm
Post subject: Re: battery performance lower then.. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
thank you was missing this package.

Paolo wrote:
> On Thu, Dec 25, 2008 at 10:56:59PM +0100, "J.Ke?ler" wrote:
>> So my question is, what can I do to improve the working time and what
>> can I check if something is not working as it should.
>> eg. if there is some "special-debian-power" package or some general
>> power saving settings which I'm not aware of.
>
> try laptop-mode-tools
>


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Jrg-Volker_Peetz

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Since: Feb 17, 2005
Posts: 2



(Msg. 7) Posted: Mon Jan 05, 2009 5:20 pm
Post subject: Re: battery performance lower then.. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Bogdan wrote:
> Hi,
>
> no extra tools/daemons needed to scale CPU frequency - see http://technowizah.com/2007/01/debian-how-to-cpu-frequency-management.html ; worked for me on all computers I tried.
>
> you might also want to tweak HDD energy saving parameter (using hdparm) ; exact options depend on what capabilities your HDD has.
>
> Bogdan
>

See also these "Good Pratices" written by Matthew Garrett
http://www.codon.org.uk/~mjg59/power/good_practices.html.
--
Regards,
Jrg-Volker.


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