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SubjectRe: [ACPI x86_64] 2.6.1-rc{1,2} hang while booting on Sun v20z aka Newisys 2100

>>Intel MultiProcessor Specification v1.4
>> Virtual Wire compatibility mode.
>>SMP mptable: bad signature [<3>BIOS bug, MP table errors detected!...
>>... disabling SMP support. (tell your hw vendor)
>>
>>
>
>Broken BIOS/MPS tables own this failure.
>See if you can disable MPS in the BIOS/SETUP.
>that is, after you verify you've got the latest BIOS...
>
>

But that still does not explain why RedHat AS3 works on the same machine
with the same BIOS settings without specifying any acpi related
parameters. As far as I can tell, AS3 is using an older version of the
ACPI code. It reports "ACPI: Subsystem revision 20030619" when
booting. So barring some hack RedHat has in there, clearly something
has changed along the way to break things on this machine...

Thanks,
Shantanu



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