Re: DS20 died

["stig.telfer" <stig alpha-processor com>]

> >+80000000000000080 5800000018
> >+1000000860
> >+20 81fec04c0
> >+30 80 0
> >+40 4 4
> >+50 0 0
> >+60 0 0
> >+70 0 0
> >TSUNAMI machine check NOT expected
> >tsunami_machine_check: vector=0x630 la_ptr=0xfffffc0000006400
> >pc=0xfffffc000033bf00 size=80 procoffset=0x18 sysoffset=0x58
> >TSUNAMI_pci_error: PERROR after read 0x0

The above is a bit misleading.  I believe every machine check goes to
this function.  It is not necessarily from the PCI bus, or even from the
Tsunami chipset.

A clue is the vector: 0x630 means "correctable".  Typically there is a
single-bit ECC error somewhere in your system (although it should be
able to cope with this).

Try something like this:

1) boot with one CPU.  If it doesn't work, boot with the other CPU. 
Make sure the connection with the motherboard is good. [is it possible
to boot with one CPU, seated in the second slot?]

2) try booting with half the memory, and then with the other half. 
Again, make sure all the connections are good.

Hopefully, there is one component that causes the failure.

Stig