Recently we've upgraded from 11.10 to 12.04 and the monitor goes on energy saving (and wakes when there's any input (mouse/keyboard)). However, the odd thing is, that it's completely disabled in the system settings. It's set to 'Never' in 'Brightness and lock' and suspend is disabled in 'Power'.
I've also tried sudo gsettings set org.gnome.settings-daemon.plugins.power active false and sudo gsettings set org.gnome.desktop.screensaver idle-activation-enabled false but the monitor still goes to energy saving within 10 minutes of inactivity.
This has probably todo with the upgrade, as it didn't before. Do you have any idea what can be done to solve this?
Edit
Seems when I have a Chrome window in full screen (F11) the screen doesn't turn off.