On Wed, 9 May 2007, David Brownell wrote: > > > > From the user's point of view, the differences between S4 and S5 amount to > > > > just these: power consumption and availability of wakeup devices. > > > > > > And the fact that in S4 there's always a resumable OS image. > > What happens if the OS writes a resumable OS image and goes into S4, and > > then the user unplugs the computer, plugs it back in, and turns the power > > switch on? At that point the system must be in S5 (by definition), but > > there's still a resumable image. > > As allowed by the chapter 2 text I pointed out earlier. > S4 *always* has such an image. So the correct statement is that S4 always has a resumable OS image and S5 may have a resumable image. From a user's point of view that doesn't sound like much of a difference, especially since the image can be successfully restored from either state. Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
