In fact, I had a luck and after read a lot forum was possible controller idle time to hibernate.
It is functioning in a xautolock
controlling and I used a small script in /.kde/Autostart. I saw possibility using keyboard, mouse or screen saver activity. But I don't know a way to get this information and linked it in a hibernate action. "W" is an interesting function for it too.
Then on my system, Slackware 13.37 and kde3.5.10
xautolock -time 10 -locker 'dbus-send --system --print-reply --dest="org.freedesk
Commands are explained here!
I used slack 14 during a test and I think pm-utils can be also setting to control idle timer unless graphical app. Maybe sleep.d, lid or events.... Can anyone to explain it for a konsole used ?