Bug Description

Seems like there's a few people out there with a common problem. I can't get my Ubuntu 9.04 to manage the frequency of the Atom N280 CPU at 1,6 GHz on my Acer One D250 HD.

A quick google with bing later I found that I could "sudo modprobe acpi_cpufreq" except this returns "FATAL: Module acpi_cpufreq not found". A "sudo dpkg-reconfigure gnome-applets" didn't cut it either.

/sys/devices/ system/ cpu/cpu0/ cpufreq/ scaling_ available_ frequencies returns:

1333000 1066000 800000

Which shouldn't be, as /proc/cpuinfo, as well as Windows 7, states it's a 1,66GHz:

model name : Intel(R) Atom(TM) CPU N280 @ 1.66GHz

stepping : 2

cpu MHz : 1333.000

power management:

Though it seems the frequency is locked at 1,3GHz and that there's no power management involved.

Other peoples struggles with this:

http:// ubuntuforums. org/showthread. php?t=1201352& highlight= n280

http:// ubuntuforums. org/archive/ index.php/ t-1209082. html