I'm new to linux and I installed ubuntu 11.10 x64. I got a HP Envy 14 laptop (i7 second gen) and my batterytime is half the uptime I get in windows 7. Now I got 2hours and it discharges in 30w. In windows I get about 4-5 hours uptime.
I have done some guides so I only use the integrated graphicscard. I ran powertop and pasted it here below, if someone can get something out of it..
this worked for me in 64 bit, but I added one step: I got rid of the xserver-xorg-video-nouveau driver, because I got a message about it conflicting with nvidia. And I had to reboot; I couldn't restart SLiM.Nouveau has been absolute crap with my EVGA GeForce GT 630. Every few seconds, my screen flickers in X. And in tty consoles, I get this:[uptime] [drm] nouveau 0000: