can you try: http://lkml.org/lkml/2010/5/25/487 to see if this fixes your issue.
-- reboot=pci boot parameter required to reboot iMac10,1 https://bugs.launchpad.net/bugs/499497 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
