Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk.Screen becomes green.

[Mark Lord]

Rafael J. Wysocki wrote:
> On Friday, 22 of February 2008, Mark Lord wrote:
> > david@xxxxxxx 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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/