I can confirm this behaviour on Edgy. It happens on an upgraded install on a PC and on a clean install on a mac.
If the display is never allowed to sleep then the screensaver starts up exactly as you'd expect (on timeout and on ctrl-alt-l). Once the screen has been allowed to sleep the screensaver no longer activates. The bizarre thing is that _sometimes_ the screensaver will work after a screen sleep, but not often! The only way t restore normal behaviour is a reboot. Logout or restart X don't affect it. -- screensaver starts first time but not after https://launchpad.net/bugs/68950 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
