System Shutdown State S5
System power state S5 is the shutdown or off state. Similar to a system in a sleeping state (S1 through S4), a system in S5 is not performing any computational tasks and appears to be off. Unlike S1-S4, however, a system in S5 does not retain memory state.
When in state S4, the computer can restart from the hibernate file; restarting from state S5 requires rebooting the system.
State S5 has the following characteristics:
|Off, except for trickle current to devices such as the power button.
|Boot is required upon awakening.
|Long and undefined. Only physical interaction, such as the user pressing the ON switch, returns the system to the working state. The BIOS can also awaken from a resume timer if the system is so configured.
|System hardware context
For a comparison between system power states and more info on S5, see System Power States.
For info on S1-S4, see System Sleeping States.