On Friday 27 July 2007 04:57, Rafael J. Wysocki wrote: Thanks for writing this, Rafael. > * system hibernation state - state, in which the system's processors are off and > its main memory is not powered, but the information necessary for continuing > the computations carried out when the system was last in a working state is > preserved in a storage space, such as a disk > * ACPI S4 state - system hibernation state, in which some information is > preserved by the ACPI platform, in accordance with the ACPI specification "some information is preserved by the ACPI platform" is sort of mis-leading. What ACPI adds to the hibernate flow is some platform hooks to handle wakeup devices, and a platform hook for the actual sleep request. I'm not aware of any information saved by ACPI during S4 that is not saved were the hibernate to be done with "acpi=off". thanks, -Len _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm