How do you read the possible cpu frequencies? Your kernel needs cpufreq support and ondemand, powersave, etc. governors; check with cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor Although with some hardware AFAIK other drivers than cpufreq are used, I don't know for Atom. Ch.