When I was updating my Ubuntu 12.04.5 LTS on my Dell Vostro 1400 an error came up about cryptsetup.

Setting up linux-image-generic (3.2.0.84.98) ...
Setting up linux-generic (3.2.0.84.98) ...
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-3.2.0-84-generic
cryptsetup: WARNING: failed to detect canonical device of /host/ubuntu/disks/root.disk
cryptsetup: WARNING: could not determine root device from /etc/fstab
Warning: No support for locale: en_US.utf8
W: mdadm: /etc/mdadm/mdadm.conf defines no arrays.

cryptsetup:
  Installed: 2:1.4.1-2ubuntu4
  Candidate: 2:1.4.1-2ubuntu4
  Version table:
 *** 2:1.4.1-2ubuntu4 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: cryptsetup 2:1.4.1-2ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-80.116-generic 3.2.68
Uname: Linux 3.2.0-80-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.9
Architecture: amd64
Date: Wed Jun 3 09:06:53 2015
InstallationMedia: Lubuntu 12.04 "Precise Pangolin" - Release amd64 (20120423)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: cryptsetup
UpgradeStatus: Upgraded to precise on 2015-03-15 (79 days ago)
crypttab: # <target name> <source device> <key file> <options>