[linux-pm] Re: [RFC][PATCH] swsusp: warn about USB devices in documentation

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Hi!
> > > Can you update the patch to fix this paragraph?
> > 
> > Well, this is talking about suspend-to-disk... That is expected to
> > power down machine, without providing USB bus power. If box
> > suspends-to-disk and leaves USB up, something is wrong with the
> > machine.
> 
> Oh, sorry, I didn't realize that.
> 
> Isn't there an ACPI mode that powers down most things (including RAM) but
> is able to respond to wakeup events?  I can't remember the mode's name,
> except that it's almost certainly "S" followed by some meaningless number
> followed by some unhelpful word. :-)  Since USB plug/unplug is potentially
> a wakeup event, such a mode must provide suspend power to the USB
> controller.

Maybe S4 does that, but I'm not sure...

> Does swsusp still support these not-completely-powered-off modes?

Yes. echo platform > /sys/power/disk.
								Pavel
-- 
Web maintainer for suspend.sf.net (www.sf.net/projects/suspend) wanted...

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