Is there a command line you can run that can enable in-habitation, disabling computer going to screen saver, sleep?
xset command controls a number of parameters of the X server (the part of the system that provides a graphical display with windows), including its built-in screen saver and blanking ability.
xset -dpms s off
If you're using a third party screensaver, it might still be triggered.
Ubuntu Forums suggests the following:
gconftool --type int -s /apps/gnome-power-manager/backlight/idle_dim_time ***time*** gconftool --type int -s /apps/gnome-power-manager/timeout/sleep_display_battery ***time*** gconftool --type int -s /apps/gnome-power-manager/timeout/sleep_computer_battery ***time***