Comment 35 for bug 904261

I built a custom Precise kernel, adding only the ACPI patch (to fix suspend/resume) and the Sputnik touchpad drivers. Things are looking much better on the U300s. There's still some minor issues, but at least the system is usable.

http://www.enemyofthestatement.com/ubuntu-12-04-on-lenovo-u300s

HTH