Ubuntu 12.04 idle screen dim timer

Note, the following procedure no longer works in Ubuntu 14.04 and newer.

Ubuntu 12.04 screen dim timer (NOT Ubuntu 14.04/16.04)

The idle screen timer in Ubuntu comes set to dim the laptop screen automatically. You can check your current idle timer by typing in Terminal:

gsettings get org.gnome.settings-daemon.plugins.power idle-dim-time

To SET the idle screen dim timer in Ubuntu 12.04 to a longer time (e.g. 90 seconds) type

gsettings set org.gnome.settings-daemon.plugins.power idle-dim-time 90

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