IBM xSeries 336 dual Xeon hangs on boot when APIC enabled

[Michael Landin Hostbaek]

Arjan van Leeuwen (avleeuwen) writes:
> I'm trying to boot FreeBSD 6.1-RELEASE/amd64 on an IBM xSeries 336 machine
> with dual Xeons 3.2GHz installed.
> 
> The installation was successful, but
> if I try to boot the SMP kernel, it hangs after detection of SCSI and ATA
> devices (possibly when doing the initialization of the mpt0 RAID controller,
> or when it tries to start the second CPU?).
> 

I've just had a similar problem with an IBM xSeries 232 - it would not
boot with apic enabled.. I chased the problem down to the network
adapter (fxp) - and when disabling the planar ethernet in BIOS it would
boot with SMP.

I managed to get both NIC and SMP working by disabling a bunch of stuff
in the BIOS, fx both serial ports and also the floppy drive.

Your problem might not be related, but give it a shot !

/mich