gen2 spake the following on 7/10/2007 8:40 PM:
> I'm having trouble with IBM xseries 345/dual Xeon 2.66GHz showing only
> one processor. At boot I see "SMP motherboard not recognized". Using
>
> title CentOS (2.6.18-8.1.8.el5xen)
> root (hd0,0)
> kernel /xen.gz-2.6.18-8.1.8.el5
> module /vmlinuz-2.6.18-8.1.8.el5xen ro
> root=/dev/VolGroup00/LogVol00 rhgb quiet
> module /initrd-2.6.18-8.1.8.el5xen.img
>
> have tried acpi=no (causes boot-hang), acpi=ht (boot hang), noapic (no
> effect), and noht (no effect)
>
> Booting to gentoo-minimal CDrom shows expected 4 cores (dual HT) with
> cat /proc/cpuinfo, only 1 using 2.6.18-8.1.8.el5xen
>
> Any ideas?
> many thanks
Is bios up to date?
Does non zen kernel detect both processors?
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