Re: Hibernation considerations

david
2007-07-18T12:56:20Z

On Wed, 18 Jul 2007, Matthew Garrett wrote:

> On Tue, Jul 17, 2007 at 08:54:24PM -0700, david@lang.hm wrote:
>> On Wed, 18 Jul 2007, Matthew Garrett wrote:
>>
>>> On Tue, Jul 17, 2007 at 08:19:32AM -0700, david@lang.hm wrote:
>>>> On Tue, 17 Jul 2007, Matthew Garrett wrote:
>>>>> Powering off rather than using S4 means you lose most wakeup device
>>>>> support. That would be a functional regression compared to the current
>>>>> code.
>>>>
>>>> only if the kexec isn't able to initialize those devices.
>>>
>>> If you aren't using ACPI, you probably don't know how to.
>>
>> the current kexec patch to allow you to move back to the original kernel
>> requires ACPI be disabled to work.
>
> Which means it isn't putting the hardware into S4, which means that you
> don't get the platform wakeup events.

Ok, I was misunderstanding what you meant by wakeup device support. if you
are meaning things like wake-on-lan then yes, you do loose that with no
ACPI support, but that is acceptable to many people. I understand it's not
for some, and I'm not saying that this should be the only type of suspend,
but I'm also saying that this should be one option.

David Lang