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What: /sys/devices/.../power_resources_D1/
Date: January 2013
Contact: Rafael J. Wysocki <>
The /sys/devices/.../power_resources_D1/ directory is only
present for device objects representing ACPI device nodes that
use ACPI power resources for power management and support ACPI
power state D1.
If present, it contains symbolic links to device directories
representing ACPI power resources that need to be turned on for
the given device node to be in ACPI power state D1. The names
of the links are the same as the names of the directories they
point to.