Re: clock runs at double speed on x86_64 system w/ATI RS200 chipset

[Andi Kleen]

Christopher Allen Wing <wingc@xxxxxxxxxxxxxxx> writes:

> On Sun, 3 Apr 2005, Mikael Pettersson wrote:
>
>> Well, first step is to try w/o ACPI. ACPI is inherently fragile
>> and bugs there can easily explain your timer problems. Either
>> recompile with CONFIG_ACPI=n, or boot with "acpi=off pci=noacpi".
>
>
> When I boot without ACPI (I used 'acpi=off pci=noacpi') the system fails
> to come up all the way; it hangs after loading the SATA driver. (but
> before the SATA driver finishes probing the disks)
>
> I'm guessing that the interrupt from the SATA controller is not getting
> through? Anyway, I assumed that ACPI was basically required for x86_64
> systems to work, is this not really the case?

Alternatively you can try to boot with noapic. Does that help?

-Andi
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