mythbuntu installer crash: Unable to install 'cryptsetup' due to conflicts.

[frankster]

The mythbuntu 14.04.02 installer crashes while unpacking packages. It has happened exactly the same way twice in a row.

I chose my own partitioning system, where I installed mythbuntu onto an existing partition without formatting it. There was already something a bit wierd in the installer because after selecting that the existing partition should be mounted as root, I got a message saying that changes to the partition table were permanent. However there was to be no change to the partition table so I said go back. The second time that I went ahead with the changes I got a warning about the installer wiping out /lib, /etc from the pre-existing partition. This warning seemed more reasonable so I went ahead with that.

All seemed to go well until a few minutes later in the package copying phase.

The key error in ubiquity seems to be as follows:

ubiquity.install_misc.InstallStepError: Unable to install 'cryptsetup' due to conflicts.

I will note that in the installer the choice to encrypt my home partition was greyed out and pre-selected. I could not alter this choice during the install.

It doesn't make any difference if the option to download updates during installation is selected or not.

If I drop to a terminal and manually do apt-get install cryptsetup I find out that the problem is that cryptsetup depends on lsb-base 4.1+Debian11ubuntu7 but version 4.1+Debian11ubuntu6 is going to be installed.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.18.8.6
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CasperVersion: 1.340
Date: Mon Apr 20 09:27:37 2015
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/mythbuntu.seed cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper only-ubiquity quiet splash --
LiveMediaBuild: Mythbuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
ProcEnviron:
 LANGUAGE=en_GB.UTF-8
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your log files attached to this bug report it seems that there is a problem with your installation media (CD/DVD). You can verify the integrity of the Ubuntu ISO files you downloaded by following the instructions at https://help.ubuntu.com/community/HowToMD5SUM. You might also retry your installation with new media. In the event that is is not in fact an error with your installation media please set the bug's status back to New. Thanks and good luck!

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[frankster (wtfrank)]

No the md5sums match, this automatic message is irritating as I may have already identified the cause of the crash in the bug report - a package dependency issue.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.