I have both KDE 4.2.3 and KDE 4.3 Beta 1 installed on different partitions. In System Settings > Desktop, I have it set so the screensaver is supposed to come on after 7 minutes of idle time and use random screensavers.

The screensavers on both versions of KDE exhibit the same behavior. That is, after 7 minutes, the screensaver comes on for about one second, then the screen goes blank. I can test any of the screensavers from within the system settings and they work fine and the thumbnail shows the random screensavers changing from one to the other.

Anyone else getting this or know how I can get the screensavers to run longer? TIA.

Edit: I'm using nvidia 180.51 if that is relevant.