Re: Re: [PATCH] swsusp: do not use pm_ops (was: Re: suspend2 merge (was: Re: CFS and suspend2: hang in atomic copy))

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On Friday, 4 May 2007 22:21, Johannes Berg wrote:
> On Fri, 2007-05-04 at 22:20 +0200, Rafael J. Wysocki wrote:
> 
> > > On the other hand, steps 6 and 7 aren't really needed for hibernation.  
> > > You _could_ shut the system off completely (ACPI S5).  Automatic wakeup
> > > wouldn't work, but the next time the user turned the computer on manually
> > > it would still resume from hibernation.
> > 
> > That's correct, with the exception that the user may find the system not fully
> > functional after the resume in that case.
> 
> Why is that anyway? Is it just a matter of the acpi code getting
> confused about the acpi bios state?

Yes, I think so.

> How can the acpi bios possibly be screwed up after what it must see as a
> fresh boot? Does the acpi code poke it in ways it's not supposed to be poked
> after a fresh boot?

Sort of.

Greetings,
Rafael
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