Since a few days I have a new laptop (Alienware M17x r3); and I wanted to install the newest Ubuntu version on it. (Was using 10.10 on my old laptop)
Anyway, my new laptop can only work for about an hour with a fully charged battery (opposed to a few times more when working in Windows 7).
I checked the battery drain rate and it's the whole time around 90W (which seems very high to me; my old laptop only had something like 25W).
I think ubuntu doesn't scale my CPU speed and thus runs on highest speed the whole time. (This makes my laptop also quite hot in Ubuntu)
I tried setting
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force" in my GRUB config file, but with no avail.
I also installed an app called Jupiter, but it didn't do a lot either.
I have a Radeon card (which I suppose is off; as I didn't install any drivers for it), and an i7 cpu.
I hope someone can help me.
Thank you very much in advance!
EDIT: I just booted with a live CD of 10.10 I had, and battery discharge was just somewhere in the 30 watts. Too bad 10.10 doesn't seem to recognize my wireless card (Bigfoot killer 1103; which is actually an Atheros AR9300), so if it's possible to somehow let that wireless card work, then I'd be happy too.
EDIT2: I just saw I set the dist as lubuntu in the thread description, this acutually should be Ubuntu.