Re: Power saving in Hardy on Laptop (powertop)
Originally Posted by
quantumkit
So basically i am not having any real problem with Hardy, but the power consumption seems to have less improvement than expected.
When I was using Gusty, the powertop always complained there is no CONFIG_NO_HZ option for the kernel (2.6.22). While I have upgraded to Hardy, I also found many options (e.g. laptop mode, etc) are not showing up...
Here are the power usage for different OS on my thinkpad
Hardy: 19~21W (powertop)
Gusty: 17~19W (powertop)
Windows Vista: 14~16W (thinkpad powermanager + undervolting)
Overall battery life is around 3~3.5 hours
Just wonder where does the options in the powertop goes? are they all implicitly enabled in Hardy now?
I was expecting the new ubuntu has great improvement on battery life since using the new kernel (according to lesswatts.org). But this is not the case (yet).
How do you determine how many watts you are using with powertop?
Thanks
Shuttle SA76G2* Athlon II X2 245 * 4Gb PC26400 * 250 Gb HDD * DVD-RW * Ubuntu 12.10
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