I had the very same problem on an IBM x326m 7969-67Y, which is a dual opteron 275.
Removing the Remote Supervisor Adapter II fixed the boot problem. The card is what IBM calls a Baseboard Management Controller, an MS-9549 PCI card. However, then fan controll stopped working :-( I seem to be having some problems with iommu too, and when enabling earlyprintk=vga it stops right after having complained about not having an aperture. -- panic on boot with 2.6.15-18-amd64-generic https://launchpad.net/bugs/35788 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
