IBM xSeries 336 dual Xeon hangs on boot when APIC enabled

Rong-en Fan grafan at
Tue Nov 6 07:22:14 PST 2007

On Aug 13, 2006 11:41 PM, Arjan van Leeuwen <avleeuwen at> wrote:
> 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?).

Recently, I had an opportunity to access one xSeries 336 box. With
7.0-BETA2 amd64, it boots just fine without any tuning. SMP is also

Something must be changed in the past two years. ;-)

Rong-En Fan

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