I've been using powerdevil to configure CPU speed too, since KDE 4.5.0, but now, it does not seem to have any option to enable it (for example, in powersave profile).
Now, all profiles are near the same, since they can't reduce/increase CPU speed, and thus, a bit useless in this matter. Or may I be missing some other app? ___________________________________________________ This message is from the kde mailing list. Account management: https://mail.kde.org/mailman/listinfo/kde. Archives: http://lists.kde.org/. More info: http://www.kde.org/faq.html.
