Confirmed in updated Ubuntu Karmic with NVidia version 190.53 and two monitors. Screen saver (blank screen) and power off both set to 5 minutes. Manually locking screen with hotkey also blanks the screen but does not power them off. I'm sure it worked in Jaunty and in Karmic earlier? Executing "xset dpms force suspend" powers off the screens.
Confirmed in updated Ubuntu Karmic with NVidia version 190.53 and two monitors. Screen saver (blank screen) and power off both set to 5 minutes. Manually locking screen with hotkey also blanks the screen but does not power them off. I'm sure it worked in Jaunty and in Karmic earlier? Executing "xset dpms force suspend" powers off the screens.