This looks like it could be a duplicate of bug 1084783 I am building a test kernel with CONFIG_PATA_ACPI unset and will post a link to that test kernel in the other bug.
** Tags removed: needs-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1126766 Title: Kernels newer than 3.5 fail to boot on Asus E45M1 (AMD E450) based device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1126766/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs