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  #1  
Old 27th November 2011, 06:14 PM
elesbb Offline
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Join Date: Nov 2011
Posts: 25
linuxfirefox
Battery life on acer aspire one

why is my battery life cut in half when running Fedora16 ? i used to get 6-8 hours running windows 7 home but now that i went to Fedora 16 my battery life is like only 3 hours .
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  #2  
Old 27th November 2011, 06:43 PM
joe.pelayo Offline
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Join Date: Dec 2006
Location: Mexico City
Age: 30
Posts: 3,104
linuxchrome
Re: Battery life on acer aspire one

Hi,

To check your battery's capacity install the program "acpi", and run it:

To install:
Code:
su
yum install acpi
and run it:
Code:
acpi -V
That will give more information about your battery. About the perceived performance it might be due to the lack of some "laptop-specific" tuning, i.e. too many running services for a laptop.

Thanks,
Joe.
__________________
Notebook: Acer Aspire 5536-5112.
AMD Athlon X2 QL64 @ 2.1GHz, 4GB DDR2 PC2-5300, ATI Radeon HD3200 (256MB), 250GB Toshiba HDD, HL-DT-ST DVDRAM GT20N
Fedora 16 x86_64

Netbook: Acer Aspire One A150
Intel Atom N270 @ 1.6GHz, 1.5 GB DDR2 PC2-4200, Intel Graphics (8MB?), 160GB Seagate HDD
Fedora 15 i686
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  #3  
Old 27th November 2011, 07:10 PM
elesbb Offline
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Join Date: Nov 2011
Posts: 25
linuxfirefox
Re: Battery life on acer aspire one

Quote:
Originally Posted by joe.pelayo View Post
Hi,

To check your battery's capacity install the program "acpi", and run it:

To install:
Code:
su
yum install acpi
and run it:
Code:
acpi -V
That will give more information about your battery. About the perceived performance it might be due to the lack of some "laptop-specific" tuning, i.e. too many running services for a laptop.

Thanks,
Joe.
here are the results
Code:
Battery 0: Charging, 17%, 04:28:01 until charged
Battery 0: design capacity 5200 mAh, last full capacity 4161 mAh = 80%
Adapter 0: on-line
Thermal 0: ok, 26.8 degrees C
Thermal 0: trip point 0 switches to mode critical at temperature 100.0 degrees C
Thermal 0: trip point 1 switches to mode passive at temperature 85.0 degrees C
Cooling 0: LCD 4 of 9
Cooling 1: Processor 0 of 11
Cooling 2: Processor 0 of 11
Cooling 3: Fan 1 of 1
btw thank you so much for the immediate reply . i had a feeling it had something to do with services running or what not .
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  #4  
Old 27th November 2011, 07:55 PM
marko Offline
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Join Date: Jun 2004
Location: Laurel, MD USA
Posts: 6,050
linuxfirefox
Re: Battery life on acer aspire one

There's no specific power management doc for Fedora 16 that I see on fedoraproject.org but the Fedora 15 one is here and should be very similar to what Fedora 16 needs
http://docs.fedoraproject.org/en-US/...agement_Guide/

running powertop (see bullet 2.2 in the above URL) will help a lot with finding power users and tweaking some settings. Probably the whole section 2 in the Power Management guide would be of use.

Last edited by marko; 27th November 2011 at 08:05 PM. Reason: update for bullet number
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  #5  
Old 27th November 2011, 07:56 PM
elesbb Offline
Registered User
 
Join Date: Nov 2011
Posts: 25
windows_7ie
Re: Battery life on acer aspire one

Quote:
Originally Posted by marko View Post
There's no specific power management doc for Fedora 16 that I see on fedoraproject.org but the Fedora 15 one is here and should be very similar to what Fedora 16 needs
http://docs.fedoraproject.org/en-US/...agement_Guide/

running powertop will help a lot with finding power users and tweaking some settings.
thank you dude !
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  #6  
Old 28th November 2011, 05:36 PM
elesbb Offline
Registered User
 
Join Date: Nov 2011
Posts: 25
windows_7ie
Re: Battery life on acer aspire one

well i visited the site and read up on the power management . and it seems quite difficult and time consuming , is there any 3rd party program that will better handle the services running and such ?
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  #7  
Old 29th November 2011, 01:02 AM
joe.pelayo Offline
An ape descendant
 
Join Date: Dec 2006
Location: Mexico City
Age: 30
Posts: 3,104
linuxchrome
Re: Battery life on acer aspire one

Quote:
Originally Posted by elesbb View Post
well i visited the site and read up on the power management . and it seems quite difficult and time consuming , is there any 3rd party program that will better handle the services running and such ?
There is this nice graphical manager (not available by default, but downloadable from the repos).

To install it do:
Code:
su
yum install system-config-services
and to run it you can type (for example) ALT+F2 and then the program's name: system-config-services.

Take notice that a normal user can check it out, but changes must be applied by the root.

Good luck,
Joe.
__________________
Notebook: Acer Aspire 5536-5112.
AMD Athlon X2 QL64 @ 2.1GHz, 4GB DDR2 PC2-5300, ATI Radeon HD3200 (256MB), 250GB Toshiba HDD, HL-DT-ST DVDRAM GT20N
Fedora 16 x86_64

Netbook: Acer Aspire One A150
Intel Atom N270 @ 1.6GHz, 1.5 GB DDR2 PC2-4200, Intel Graphics (8MB?), 160GB Seagate HDD
Fedora 15 i686
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  #8  
Old 29th November 2011, 03:31 PM
elesbb Offline
Registered User
 
Join Date: Nov 2011
Posts: 25
windows_7ie
Re: Battery life on acer aspire one

Quote:
Originally Posted by joe.pelayo View Post
There is this nice graphical manager (not available by default, but downloadable from the repos).

To install it do:
Code:
su
yum install system-config-services
and to run it you can type (for example) ALT+F2 and then the program's name: system-config-services.

Take notice that a normal user can check it out, but changes must be applied by the root.

Good luck,
Joe.
thanks so much . i also found cpufreq in the link above . however i cant no matter what i do , edit the scaling speeds . the min scaling speed is set at 800 MHz thats HALF the total CPU power . i feel thats whats killing the battery . how can i edit the file ?
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