Comment 21 for bug 97554

This may be a fluke, but I was trying to see if this would work, and it did: I booted into Windows, to verify that it saw all four of my cores. It did (Task Manager/Performance showed four graphs for CPU usage), and when I rebooted into Intrepid, all four cores were recognized by the kernel. I also noticed that the kernel didn't pause on APIC loading this time, either (I have taken out the "quiet" kernel parameter, so I have better insight as to what's going on with the booting kernel).

Just FYI. I will hold off on Jaunty until it's fully released, then I intend to reinstall this machine with an x86_64 system, to see if that makes a difference.