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Based on kernel version 3.16. Page generated on 2014-08-06 21:35 EST.

1	What:		/sys/devices/.../real_power_state
2	Date:		January 2013
3	Contact:	Rafael J. Wysocki <rafael.j.wysocki@intel.com>
4	Description:
5			The /sys/devices/.../real_power_state attribute is only present
6			for device objects representing ACPI device nodes that provide
7			power management methods and use ACPI power resources for power
8			management.
9	
10			If present, it contains a string representing the real ACPI
11			power state of the given device node as returned by the _PSC
12			control method or inferred from the configuration of power
13			resources.  Its possible values, "D0", "D1", "D2", "D3hot", and
14			"D3cold", reflect the power state names defined by the ACPI
15			specification (ACPI 4 and above).
16	
17			In some situations the value of this attribute may be different
18			from the value of the /sys/devices/.../power_state attribute for
19			the same device object.  If that happens, some shared power
20			resources used by the device node are only ON because of some
21			other devices using them at the moment.
22	
23			This attribute is read-only.
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