Are you able to boot without the nr_cpus parameter with older kernels? Was this not happening with prior Ubuntu releases? If you don't know, can you test a prior kernel, maybe the 3.11[0] or 3.2[1] upstream kernel:
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-saucy/ [1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-precise/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1284085 Title: unable to boot after install on 2013 macbook air To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1284085/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
