I found out how to enable the screen locking on resume. It is done by setting the locking on when screensaver is active.
However there are other problems with this setting. After resume, when I have entered my password and the screen unlocks the next thing that happens is that the same screen pops up which comes when pressing the power button. >From there I have to push the Cancel to get my desktop back. So it seems there are still unsettled issues with this gnome-screensaver. -- Pressing power button unlocks locked screensaver https://launchpad.net/malone/bugs/37350 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs