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23 lines
1.0 KiB
23 lines
1.0 KiB
What: /sys/devices/.../real_power_state |
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Date: January 2013 |
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Contact: Rafael J. Wysocki <[email protected]> |
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Description: |
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The /sys/devices/.../real_power_state attribute is only present |
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for device objects representing ACPI device nodes that provide |
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power management methods and use ACPI power resources for power |
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management. |
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If present, it contains a string representing the real ACPI |
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power state of the given device node as returned by the _PSC |
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control method or inferred from the configuration of power |
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resources. Its possible values, "D0", "D1", "D2", "D3hot", and |
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"D3cold", reflect the power state names defined by the ACPI |
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specification (ACPI 4 and above). |
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In some situations the value of this attribute may be different |
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from the value of the /sys/devices/.../power_state attribute for |
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the same device object. If that happens, some shared power |
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resources used by the device node are only ON because of some |
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other devices using them at the moment. |
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This attribute is read-only.
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