taken from today's DWW begins to throw some light on the feature.As a part of the miniconfs, power management guru and Red Hat employee Matthew Garrett gave a talk entitled "How I Learned To Stop Worrying And Love ACPI". In this talk, Garrett discussed the intricacies of ACPI and how the system is supposed to work. It's a very complicated process, requiring an interpreter inside the kernel to execute ACPI commands which makes it tricky for Linux to correctly perform tasks such as suspend and resume.
Ironic that Garrett should have been speaking at the LCA in Hobart! Tasmania is still part of Oz?