Comment 20 for bug 1072531

This is a real usability issue. I have a Mac Pro running two Ubuntu VMs and I never want them to activate screensavers/sleep mode/locked screen--the Mac Pro has its own power-saving features. The 12.04 VM works correctly, but the 12.10 has no easy option to stop the screen from turning black.

I found a fix here: http://askubuntu.com/questions/207131/screensaver-blanking-problem

The accepted answer worked for me -- setting idle-dim-time to 0 is my guess at what fixes things, but I also have the screensaver disabled thanks to an answer below it.

Ideally the setting for this would be configurable through the "System Settings" application so that people don't have to know about dconf.

Thanks!