An update: I have been experimenting with kernel command-line params for APIC. Adding "noapic" make no difference- you still get all CPUs appearing and it still crashes after a few minutes. Adding "nolapic" has the same effect as disabling APIC in the bios: the system is stable, but you only get 1 CPU. The best option seems to be "nolapic_timer" which seems to be a stable system with all 4 CPUs showing.
I'll add a few dmesg outputs with the various kernel options used. -- hard lock (hang) after a few minutes with APIC enabled https://bugs.launchpad.net/bugs/659705 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
