Re: [ACPI x86_64] 2.6.1-rc{1,2} hang while booting on Sun v20zaka Newisys 2100

[Shantanu Goel]

> > 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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