Screensaver/blanking problem

I have upgraded to 12.10 and then downgraded again to 12.04 LTS because of the screensaver or screen blanking problem. After 10-12 minutes the screen goes black/blank when i dont do anything (idle). I have tried setting in the Brightness and Lock menu that the screen should never lock or turn off if idle. This is very annoying when watching movies etc.

Would be nice if someone knows this.

I'm not certain which one thing fixed it, but here's what I did:

• Open dconf editor from the Dash
• Click on the Find, and type power (case-sensitive).

• Here's what I've got set:

  • idle-brightness = 0
  • idle-dim-time = 0
  • sleep-display-ac = 0
  • sleep-display-battery = 0
  • sleep-inactive-ac-timeout = 0
  • sleep-inactive-battery-timeout = 0

Try setting those and see if it helps you. Again, not exactly sure which one thing fixes it, I haven't taken the time to check. And ultimately, one shouldn't have to do this in the first place.

Updating the settings using the Dconf-Editor didn't work for me.

I found this bug report -> https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1072531.

Part of the bug report was a work-around.

Try running "xset s 0 0" from the command line, this fixed the problem for me.

This worked for me:

Open Dconf-Editor from the Dash.

Org -> Gnome -> Desktop -> Screensaver. In the window that appear, uncheck the line idle-activation-enabled and uncheck the line ubuntu-lock-on-suspend.

Another option is: on the left side, just below the voice Screensaver you see Session. Click on that and in the window that appears, the first line says idle-delay, the value is in seconds so maybe you can change the default value of 600 sec into a much higher value.

The movie-player Totem has a function in Preference -> Visualization, there is a line: Disable screensaver, you should check Video-audio. I hope it helps. If not, put everything back as default.