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Old 12-07-2009, 08:58 AM
Darshana Jayasinghe
 
Default Ubuntu Laptop Battery Usage more than Windows Vista

Did u try saving power by changing CPU frequency? Laptops have a greater effect on frequency reducing.

On Mon, Dec 7, 2009 at 3:04 PM, Jatin Davey <daveyjatin@gmail.com> wrote:

Hi all



I am a new convert from Windows Vista to Ubuntu. While i was using Vista

the Avg time that my laptop battery would run was for 1 hour 15 mins.

After installing Ubuntu it runs for a maximum of 1 hour with the battery

fully charged. I am using Ubuntu 9.10 on a Toshiba A135-S2386. Just

curious to know if i need to tweak anything to use the battery

optimally. Though i am satisfied with the support and the usage of

ubuntu on my laptop just wanted to know if i am missing some thing.



Note : The battery usage was observed for over 3 weeks now.



Thanks

Jatin



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Old 12-07-2009, 10:05 AM
"Barry"
 
Default Ubuntu Laptop Battery Usage more than Windows Vista

On Mon, 07 Dec 2009 15:28 +0530, "Darshana Jayasinghe"
<darshana.jayasinghe@gmail.com> wrote:
> Did u try saving power by changing CPU frequency? Laptops have a greater
> effect on frequency reducing.
>
> On Mon, Dec 7, 2009 at 3:04 PM, Jatin Davey <daveyjatin@gmail.com> wrote:
>
> > Hi all
> >
> > I am a new convert from Windows Vista to Ubuntu. While i was using Vista
> > the Avg time that my laptop battery would run was for 1 hour 15 mins.
> > After installing Ubuntu it runs for a maximum of 1 hour with the battery
> > fully charged. I am using Ubuntu 9.10 on a Toshiba A135-S2386. Just
> > curious to know if i need to tweak anything to use the battery
> > optimally. Though i am satisfied with the support and the usage of
> > ubuntu on my laptop just wanted to know if i am missing some thing.
> >
> > Note : The battery usage was observed for over 3 weeks now.
> >
> > Thanks
> > Jatin
> >
> > --


This may help if you use a wireless connection. On my old Dell X1,
Windows had a setting to turn off the network card when running on the
battery. That stretched the time I got from a full charge.


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Old 12-07-2009, 10:07 AM
Andrew Farris
 
Default Ubuntu Laptop Battery Usage more than Windows Vista

> On Mon, Dec 7, 2009 at 3:04 PM, Jatin Davey <daveyjatin@gmail.com>
> wrote:
> Hi all
>
> I am a new convert from Windows Vista to Ubuntu. While i was
> using Vista
> the Avg time that my laptop battery would run was for 1 hour
> 15 mins.
> After installing Ubuntu it runs for a maximum of 1 hour with
> the battery
> fully charged. I am using Ubuntu 9.10 on a Toshiba A135-S2386.
> Just
> curious to know if i need to tweak anything to use the battery
> optimally. Though i am satisfied with the support and the
> usage of
> ubuntu on my laptop just wanted to know if i am missing some
> thing.
>
> Note : The battery usage was observed for over 3 weeks now.
>
> Thanks
> Jatin
>

I fixed your top-post for you Darshana...

On Mon, 2009-12-07 at 15:28 +0530, Darshana Jayasinghe wrote:
> Did u try saving power by changing CPU frequency? Laptops have a
> greater effect on frequency reducing.

@Jatin: Another thing you can try is running powertop from a terminal
(must first install with a sudo apt-get install powertop, or through
synaptic) this program can, a lot of times, help you reduce the power
load of your system by turning off some unneeded services, suspending
USB ports, etc. when on battery.

You can also check "System > Preferences > Power Management", and
configure your laptop to turn the monitor off after a certain time to
save battery, and to spin down hard disks when possible...which also
helps.

To monitor/configure your laptop CPU's frequency, look at adding
the CPU frequency scaling monitor to your panel (right-click > add to
panel > CPR frequency scaling monitor)...this applet will let you know
what your frequency is, and let you manually change the mode your CPUs
are in (though this is usually automatically handled).

Lastly, if you're using compiz, consider cutting down on the effects, or
turning it off altogether, and use metacity's compositing instead, if
you just want the drop-shadows and stuff... running compiz means you
will use more GPU, taking more battery.

that said, even with compiz running on my new dell laptop, I still
regularly get about 3:20-3:45 on my battery, depending on what I'm
doing...and this is a standard battery, not a long-life one.

Hope that helps!

--
Andrew
_____________________________
Registered Linux User: 473690
Registered Ubuntu User: 22747


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Old 12-08-2009, 02:24 AM
Jatin Davey
 
Default Ubuntu Laptop Battery Usage more than Windows Vista

Andrew Farris wrote:
>> On Mon, Dec 7, 2009 at 3:04 PM, Jatin Davey <daveyjatin@gmail.com>
>> wrote:
>> Hi all
>>
>> I am a new convert from Windows Vista to Ubuntu. While i was
>> using Vista
>> the Avg time that my laptop battery would run was for 1 hour
>> 15 mins.
>> After installing Ubuntu it runs for a maximum of 1 hour with
>> the battery
>> fully charged. I am using Ubuntu 9.10 on a Toshiba A135-S2386.
>> Just
>> curious to know if i need to tweak anything to use the battery
>> optimally. Though i am satisfied with the support and the
>> usage of
>> ubuntu on my laptop just wanted to know if i am missing some
>> thing.
>>
>> Note : The battery usage was observed for over 3 weeks now.
>>
>> Thanks
>> Jatin
>>
>>
>
> I fixed your top-post for you Darshana...
>
> On Mon, 2009-12-07 at 15:28 +0530, Darshana Jayasinghe wrote:
>
>> Did u try saving power by changing CPU frequency? Laptops have a
>> greater effect on frequency reducing.
>>
>
> @Jatin: Another thing you can try is running powertop from a terminal
> (must first install with a sudo apt-get install powertop, or through
> synaptic) this program can, a lot of times, help you reduce the power
> load of your system by turning off some unneeded services, suspending
> USB ports, etc. when on battery.
>
> You can also check "System > Preferences > Power Management", and
> configure your laptop to turn the monitor off after a certain time to
> save battery, and to spin down hard disks when possible...which also
> helps.
>
> To monitor/configure your laptop CPU's frequency, look at adding
> the CPU frequency scaling monitor to your panel (right-click > add to
> panel > CPR frequency scaling monitor)...this applet will let you know
> what your frequency is, and let you manually change the mode your CPUs
> are in (though this is usually automatically handled).
>
> Lastly, if you're using compiz, consider cutting down on the effects, or
> turning it off altogether, and use metacity's compositing instead, if
> you just want the drop-shadows and stuff... running compiz means you
> will use more GPU, taking more battery.
>
> that said, even with compiz running on my new dell laptop, I still
> regularly get about 3:20-3:45 on my battery, depending on what I'm
> doing...and this is a standard battery, not a long-life one.
>
> Hope that helps!
>
>
Thanks all.

I would try the mentioned settings and get back if it helps or any
further assistance is needed.

Thanks
Jatin

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Old 12-08-2009, 03:05 AM
Darshana Jayasinghe
 
Default Ubuntu Laptop Battery Usage more than Windows Vista

Thank you very much Andrew, I was too lazy to write the detailed mail.
thanks for your mail.

On Mon, Dec 7, 2009 at 4:37 PM, Andrew Farris <flyindragon1@aol.com> wrote:



> On Mon, Dec 7, 2009 at 3:04 PM, Jatin Davey <daveyjatin@gmail.com>

> wrote:

> * * * * Hi all

>

> * * * * I am a new convert from Windows Vista to Ubuntu. While i was

> * * * * using Vista

> * * * * the Avg time that my laptop battery would run was for 1 hour

> * * * * 15 mins.

> * * * * After installing Ubuntu it runs for a maximum of 1 hour with

> * * * * the battery

> * * * * fully charged. I am using Ubuntu 9.10 on a Toshiba A135-S2386.

> * * * * Just

> * * * * curious to know if i need to tweak anything to use the battery

> * * * * optimally. Though i am satisfied with the support and the

> * * * * usage of

> * * * * ubuntu on my laptop just wanted to know if i am missing some

> * * * * thing.

>

> * * * * Note : The battery usage was observed for over 3 weeks now.

>

> * * * * Thanks

> * * * * Jatin

>



I fixed your top-post for you Darshana...



On Mon, 2009-12-07 at 15:28 +0530, Darshana Jayasinghe wrote:

> Did u try saving power by changing CPU frequency? Laptops have a

> greater effect on frequency reducing.



@Jatin: Another thing you can try is running powertop from a terminal

(must first install with a sudo apt-get install powertop, or through

synaptic) this program can, a lot of times, help you reduce the power

load of your system by turning off some unneeded services, suspending

USB ports, etc. when on battery.



You can also check "System > Preferences > Power Management", and

configure your laptop to turn the monitor off after a certain time to

save battery, and to spin down hard disks when possible...which also

helps.



To monitor/configure your laptop CPU's frequency, look at adding

the CPU frequency scaling monitor to your panel (right-click > add to

panel > CPR frequency scaling monitor)...this applet will let you know

what your frequency is, and let you manually change the mode your CPUs

are in (though this is usually automatically handled).



Lastly, if you're using compiz, consider cutting down on the effects, or

turning it off altogether, and use metacity's compositing instead, if

you just want the drop-shadows and stuff... running compiz means you

will use more GPU, taking more battery.



that said, even with compiz running on my new dell laptop, I still

regularly get about 3:20-3:45 on my battery, depending on what I'm

doing...and this is a standard battery, not a long-life one.



Hope that helps!



--

Andrew

_____________________________

Registered Linux User: 473690

Registered Ubuntu User: 22747





--

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Old 12-08-2009, 07:57 AM
Andrew Farris
 
Default Ubuntu Laptop Battery Usage more than Windows Vista

On Tue, 2009-12-08 at 09:35 +0530, Darshana Jayasinghe wrote:
> Thank you very much Andrew, I was too lazy to write the detailed
> mail.

np

I just like to be helpful.

--
Andrew
_____________________________
Registered Linux User: 473690
Registered Ubuntu User: 22747


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