The file ~/.kde/share/config/displayconfigrc keeps the saved "dpmsSeconds=" value between KDE sessions. But the actual power saving does not use this time value in new KDE session.
-- EDGY: Does not keep monitor's power saving settings between KDE sessions https://launchpad.net/bugs/65887 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs