Re: BUG lapic: Can't boot on battery (2.6.21-rc{1,2,3,4})

[Andi Kleen]

> The BIOS/ACPI is broken and does only expose C1, which should not switch
> off LAPIC. The BIOS is switching into deeper C-States behind the kernels
> back somehow.

Hmm, perhaps we can check AMD && (cstate >= 2 || has a battery) ? 
Should be doable by looking up the battery object in ACPI

-Andi
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