Disable screensaver in Ubuntu
#To disable the screensaver:(via: http://ubuntuforums.org/showthread.php?t=428967)
gconftool-2 -s /apps/gnome-screensaver/idle_activation_enabled --type=bool false
#To disable monitor sleeping:
gconftool-2 -s /apps/gnome-power-manager/ac_sleep_display --type=int 0
