On Tue, 2009-05-12 at 10:50 +0800, Matthew Garrett wrote:
> On Tue, May 12, 2009 at 10:26:12AM +0800, yakui_zhao wrote:
> > Windows can work well on such broken box. And I find that the _STA
> > object of power resource is not called in course of power transition
> > with the help of KVM.
> >
> > To be compatible with windows, we add such a
> > workaround("acpi.power_nocheck=1") to fix this issue.
>
> If Windows doesn't call _STA when performing these power transitions
> then the default behaviour of Linux should be not to call _STA. We
> strive to maintain compatibility with Windows when it comes to driving
> the hardware - that means not forcing the user to add a boot option or
> trying to maintain a DMI table.
It will be OK to change the default value of "power_nocheck" to 1.
I will do this.
>
> > If the power state check is always skipped in course of power
> > transition, there is no such error message. But it can't tell us that
> > this is a broken BIOS.
>
> Failing someone's suspend in order to inform them that their ancient
> hardware has a broken BIOS doesn't seem like useful behaviour.
>
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