gavin@elgac-laptop:~$ dpkg -l | grep power
ii  acpid                                                    1.0.6-9ubuntu8                             Utilities for using ACPI power management
ii  devicekit-power                                          011-1ubuntu1                               abstraction for power management
ii  gnome-power-manager                                      2.28.1-0ubuntu1                            power management tool for the GNOME desktop
ii  libdevkit-power-gobject1                                 011-1ubuntu1                               abstraction for power management - shared li
ii  libgnomecanvas2-0                                        2.26.0-1                                   A powerful object-oriented display - runtime
ii  libgnomecanvas2-common                                   2.26.0-1                                   A powerful object-oriented display - common 
ii  micromiser-beta                                          2.0.2-0jaunty1                             MiserWare intelligent power management for P
ii  pm-utils                                                 1.2.5-2ubuntu7                             utilities and scripts for power management
ii  powermgmt-base                                           1.30+nmu1                                  Common utils and configs for power managemen
ii  powertop                                                 1.11-1ubuntu1                              Linux tool to find out what is using power o
ii  tcpdump                                                  4.0.0-2ubuntu2                             A powerful tool for network monitoring and d