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    SubjectRe: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.
    Rafael J. Wysocki wrote:
    > On Friday, 22 of February 2008, Mark Lord wrote:
    >> david@lang.hm wrote:
    >> ..
    >>> I've been watching for kexec hibernate for a little while now, and the
    >>> last I saw was that acpi was incompatible with the kexec hibernate (but
    >>> the suspend folks were still claiming that devices needed to be put in
    >>> the 'right mode' not just powered off. I've been waiting to see this
    >>> resolved.
    >> ..
    >>
    >> Yeah, exactly. What's so special about poweroff on hibernation?
    >> Why even bother with the special "S4" state there?
    >
    > (1) To be able to wake up with the help of devices that can't wake
    > the system up from S5 (power off)
    > (2) To handle some platform devices appropriately over the cycle
    ..

    That's the theory. I've read about it, but have yet to imagine
    any real-life situation where it applies.

    But this isn't my speciality, so.. do you have experience with any real examples?

    Thanks!

    >> I want a real full poweroff, or at least I think I do. Why wouldn't I?
    >>
    >> ????
    >
    > You may want that, some people may not want it.
    >
    > We are supposed to handle S4, the BIOS/platform may expect us to do that, so
    > IMO this is a good enough reason to do it. Especially that we can.
    >
    > Thanks,
    > Rafael



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