Celerons don't support voltage scaling. p4-clockmod throttles the CPU rather than scaling the frequency, and has sufficient latency that enabling it by default causes serious problems. I'm afraid I'm going to have to reject this.
The reason for disabling frequencies below 2GHz is that under certain circumstances failing to do so can cause the machine to crash. It's a bit of a crude choice, but it's what Intel recommend. -- Edgy beta 1: scaling_available_frequencies list incomplete https://launchpad.net/bugs/63639 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs