Quote Originally Posted by rrich1974 View Post
open vlc and play a long music file or a low bitrate audio stream, mute the vlc.
vlc will prevent the screensaver.
thanks for your help. but i have no idea what this means (see my disclaimer in the OP)

go to prefernces, general setting, choose all setting and in the general setting (first option) and check "prevent power management during playback"
that will do the trick.
again, i no longer know where 'preferences, general setting' is. 12.04. is a different setup with different terms. there are no general settings in System Settings

caffeine is a solution but from my experience it not work quite well.
not to mention that you need to add a ppa, this i am not recommending!
ahh its the ppa! i will let caffeine go then.