摘要： Advanced Configuration and Power Management Interface(ACPI)是由Intel,Microsoft等厂家订的一套Spec,规范了OS,APP对于电源的管理。ACPI涉及很广，这里仅涉及一些System Power Management, Device Power Management.System PM:S0: working modeS1: CPU停止工作, CPU,RAM继续供电,cache flush到Ram，Device若无必要则处于Power off状态S2:, re-fresh ram, cache数据丢失,CPU断电.S3: 阅读全文