Hi, I don't understand whether my computer is sleeping or hibernating or something else. After booting up into a KDE desktop on OpenSuse 13.1, after doing nothing for around ten minutes, the screen goes black. W.hen I move the mouse the computer "wakes up" a bit and the screen shows the OpenSuse graphic on the right side, and the mouse pointer is responsive, but nothing else is visible or available. There is no dialogue box to enter a password to unlock it, nothing at all. If I have a browser or other app open and close the lid, it restores quite well on opening the lid again. What is the difference between the two states, and what config file would I need to look at to resolve the problem above? My only solution to date is to CTRL+ALT+F2 su and reboot. Irritating but not the end of the world. Thanks Andrew Greig