I am seeing a horrible battery life with Fedora 15 (lovelock) with Gnome Shell 3 on my laptop. I keep the screen brightness, back light pretty low. I still get about 1 hr 50 minutes battery life out of it after a full charge while just browsing. I also got a brand new battery from lenovo but no luck.
I tried the workaround mentioned here — booting with
pcie_aspm=force — but that did not help any.
It is a Lenovo T420s with a 6 cell battery. The kernel version is 2.6.40-4.fc15.x86_64 and CPU is Intel® Core™ i5-2540M CPU @ 2.60GHz. Kernel config can be found here.
Is this pretty much what everyone else is seeing? Is it something with Fedora 15? Should I downgrade to Fedora 14? Are there any specific packages I can remove to make the battery life better?
I think I should be able to get around 3 to 4 hours with a 6 cell battery - less than 2 hours sounds very low.
FYI - I found this link to be an excellent source for tips on reducing power usage. I am going to follow some of the advices posted there.