xfce4-power-manager is installed by default in Lubuntu. Nevertheless the two configuration folders for the startup applications have been disabled in Lubuntu 13.10 and newer versions according to e-mail posting by @Julien Lavergne [1]
So, try to startup properly the xfce4-power-manager by adding an entry in ~/.config/lxsession/Lubuntu/autostart file or graphically : Start Menu - Preferences - Default applications of LXSession - Autostart . The command should be simple like /usr/bin/xfce4-power-manager Then please test again if Lubuntu "respect" your settings. If yes, then we can mark this bug as invalid because it is Lubuntu specific and has nothing to do with xfce4-power-manager. [1] - https://lists.launchpad.net/lubuntu-qa/msg04192.html Regards NikTh ** Changed in: xfce4-power-manager (Ubuntu) Status: Triaged => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1193716 Title: Monitor turns off after 10 minutes of inactivity despite the fact that XScreensaver has been removed from Lubuntu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/1193716/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs