I am trying to configure the "low level" power settings on my SLES12 SP2 system under gnome (such as /lock/blank_screen). From what I have found on gnome, there should be options to enter "complex" mode for gnome power management, but the gconf keys (e.g., /apps/gnome-power-manager/lock/use_screensaver_settings) are not listed under the gconf editor.