Here is the dmesg from a successful boot. Before this successful boot, it failed three times with error I reported above.
** Attachment added: "dmesg.txt" http://launchpadlibrarian.net/12990332/dmesg.txt -- ATA Revalidation Failed https://bugs.launchpad.net/bugs/206635 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