Battery life on acer aspire one

[elesbb]

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 .

[joe.pelayo]

Hi,

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

To install:

su
yum install acpi

and run it:

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.

[elesbb]

Originally Posted by joe.pelayo

Hi,

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

To install:

su
yum install acpi

and run it:

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

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 .

[marko]

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.

[elesbb]

Originally Posted by marko

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 !

[elesbb]

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 ?

[joe.pelayo]

Originally Posted by elesbb

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:

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.

[elesbb]

Originally Posted by joe.pelayo

There is this nice graphical manager (not available by default, but downloadable from the repos).

To install it do:

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 ?