I have the same problem on two different computers running Edgy. The screensavers play in preview, etc. but after the appropriate idle time I just get a black screen. This happens no matter what saver I choose. However, occasionally, the screensaver does start, but not usually and I have no idea why. Cannot detect a pattern.
-- screensaver starts but shows only a black screen https://launchpad.net/bugs/60394 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs