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.
> 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.
--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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