I’m using an Asus eeePc 901 with Xubuntu 12.04.Jupiter is installed on it for a convenient way to manage the SHE. The SHE enables control over the FSB, it is very efficient to further reduce the battery usage, and is independent of the cpufreq governors.
I will soon upgrade to the 14.04 version of Xubuntu, so I looked into the replacements. Everybody talks about TLP but this doesn’t manage the SHE of the eeePCs.
The mode can be changed by setting 0, 1 or 2 in the following file: /sys/devices/platform/eeepc/cpufv
0 : max perf – overclock FSB
1 : on demand – standard FSB
2 : power save – downlclock FSB
Source I used to find out: http://chomaloma.blogspot.fr/2010/02/followup-on-super-hybrid-engine-superhe.html
You need the eeepc_laptop module loaded for this cpufv option to be available.