I am using ubuntu 12.04 (switched from windows 8 recently) and I am finding that this OS is draining my laptops battery like anything (works only like 70% of windows). I also found this interesting quote from wikipedia:
Ubuntu 10.04 LTS has also been criticized for its poor battery life on Laptops and Netbooks, even as OEM on devices such as Asus's eeePC, when compared to Microsoft Windows 7, with Ubuntu having been shown to use between 14–56% more power. Ubuntu's developers have acknowledged and sought to solve the issues of power consumption in the 12.04 LTS release.
Can ubuntu experts suggest me some tips and tricks to save my battery life ?
Also tell me how can I monitor my battery usage, like which application/process is more resource(power) consumptive ? Is there any way we can select system performance schemes like we do in Windows like High Performance or Battery Saver types ?
I also see a problem with my ubuntu display brightness setting. I manually set it to lowest possible but ubuntu forgets my setting everytime I reboot my machine. Is there any way we can permanently save this setting and ubuntu can remember it ?