gnome_rr_screen_get_dpms_mode () from /usr/lib/libgnome-desktop-3.so.2
gnome_rr_screen_set_dpms_mode () from /usr/lib/libgnome-desktop-3.so.2
?? () from /usr/lib/gnome-settings-daemon-3.0/libpower.so
?? () from /usr/lib/gnome-settings-daemon-3.0/libpower.so
?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0