Obviously powertop is not meant to be an automatic tool to tune the power settings for you. :) From the information gathered with powertop, you can try tools like laptop-mode-tools or other dbus hooks available in the distro you use and see what's missing.

On Thu, Apr 4, 2013 at 10:14 PM, 陳韋任 (Wei-Ren Chen) <chenwj@iis.sinica.edu.tw> wrote:
Hi all,

  powertop is a great tool, and I love it. However, there is a place I
would like to know if it can be improved or done. When the AC power is
off, I always have to turn on those tunable options shown in powertop
to save power. Is it possible to make powertop do that automatically
for me?



Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj
PowerTop mailing list

Best regards,
Yuan Chao