ACPI breakage (was: 2.6.x: local APIC results in hang at boot)

[Mikael Pettersson]

On 2004-02-03, Malte Cornils wrote:
>I've tested this with 2.6.2-rc3 and kernels before that; when I activate
>the "Enable local APIC" question the kernel hangs with:
>
>POSIX conformance testing by UNIFIX
>enabled ExtInt on CPU#0
>ESR value before enabling vector: 00000000
>ESR value after enabling vector: 00000000
>Using local APIC timer interrupts.
>calibrating APIC timer ...
>..... CPU clock speed is 1399.0856 MHz.
>..... host bus clock speed is 99.0989 MHz.
>NET: Registered protocol family 16
>EISA bus registered
>PCI: Using configuration type 1
>mtrr: v2.0 (20020519)
>ACPI: Subsystem revision 20040116
>ACPI: IRQ9 SCI: Edge set to Level Trigger.
>
>and then nothing happens.
>
>On request, I can send the boot log from the same kernel without local
>APIC compiled-in; you can also get it from 
>http://www.usta.de/RefAk/Aussen/privat/apic-works.log
>
>As I said, it works without the option. (So, this is a problem for
>people using distribution/generic kernels with the Local-APIC option
>enabled)
>
>This is an Asus Centrino notebook (M2400N) with 1,4 GHz, latest BIOS
>update and so on. When I enable the local APIC but disable ACPI, it
>works too - ACPI is used to reroute some interrupts and make e.g. sound
>work.

This clearly indicates ACPI breakage on your machine.
Re-report it as such to the ACPI list.
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