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