Since in Ubuntu 12.04 there weren't integrated screen savers (btw, why?), I looked for a tutorial online and installed XScreensaver 5.15. The problem is that it won't start the sccreen savers until I've actually opened the preferences window - then it says
The XScreenSaver daemon doesn't seem to be running on ":0". Launch it now?
If I click OK, it then works.
Is there a way to get it to run when the computer starts up? A screen saver is kindah useless if you have to tell it to start every time you turn your computer on...
Here's my XScreenSaver entry in Startup Apps: