Many reboots later and I am not wiser. There must be something polling every second (using the kernel timer as reference) which interferes and causes the hang. Attaching another dmesg log, with many modules blacklisted.
** Attachment added: "dmesg2.txt" http://launchpadlibrarian.net/31363103/dmesg2.txt -- ata exception and hang when booting https://bugs.launchpad.net/bugs/397096 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
