Comment 182 for bug 524281

This problem appeared in 2.6.32 Kernel.
Beginning with 2.6.37 Kernel this is solved.

I observe increased battery life (+15-20%) in my old laptop.
sudo powertop, agrees with this impression

Ubuntu users can use this kernel
http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=M;O=D
but they are going to loose some ubuntu specific customizations (ureadahead
mainly)

For Lucid there is a much better solution that i currently use. No side
effects so far...
https://launchpad.net/~kernel-ppa/+archive/ppa?field.series_filter=lucid