Messages in this thread | | | Date | Fri, 22 Feb 2008 12:32:12 -0500 | From | Mark Lord <> | Subject | Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green. |
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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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