power management tool for the MATE desktop

 MATE Power Manager is a session daemon for the MATE desktop
 that takes care of system or desktop events related to power, and
 triggers actions accordingly. Its philosophy is to completely hide
 these complex tasks and only show some settings important to the user.
 .
 The MATE power manager displays and manages battery status, power plug
 events, display brightness, CPU, graphics card and hard disk drive
 power saving, and can trigger suspend-to-RAM, hibernate or shutdown
 events, all integrated to other components of the MATE desktop.