"Michael Weirauch" <dev@xxxxxxxxxxx> wrote: > devfs: "enhanced_speedstep" api_version missing > devfs: "enhanced_speedstep" mandatory driver symbol(s) missing! This is a driver that follows the new driver architecture; thus you have to install it as such: AddNewDriversToHaikuImage power : enhanced_speedstep ; Note that this rule seems to be buggy, though, at least it copied the driver as "power" once, and I had to fix this manually. Bye, Axel.