I installed Linux Mint 12(lisa) on my dell lx502 i.e. XPS 15 with an i7-670QM cpu and the nvidia 550M with optimus.
However I am concerned about the power consumption. About 21% battery ~= 36 minutes, while this is double in Windows 7 (with aero on). I've installed Jupiter, but does not seem to help a lot. My screen brightness is set to minimum.
My question is how I can make it be a little more power efficient and achieve similar battery performance like windows - 5.5Hrs on a 9 cell battery.
ren@zeus ~ $ uname -a Linux zeus 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Li