I've only found out about this project and I've already noticed great improvements with my laptop.
One last problem I'm having is that my backlight is off when Ubuntu boots (it has an Nvidia card). GRUB is fine, then after that the backlight goes off. I can just about see enough to log in and then have to tap fn+f5 a couple of times to turn the backlight on and then it's fine.
Also, every now and then, the backlight just goes off and I have to tap fn+f5 a couple of times to get it back.
Wondered if anyone could help with this?