Running the upgrade-manager -d -c from an Ubuntu Studio Trusty 14.04.4 VM (Virtual Box), to Xenial fails with a "Could not calculate the upgrade error". Will upload some screenshots from the host in a minute.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 4.2.0-34.39~14.04.1-lowlatency 4.2.8-ckt4
Uname: Linux 4.2.0-34-lowlatency x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
CurrentDmesg.txt:
[ 38.455843] init: plymouth-upstart-bridge main process ended, respawning
[ 39.457580] init: plymouth-stop pre-start process (1269) terminated with status 1
Date: Thu Mar 24 10:18:18 2016
InstallationDate: Installed on 2016-02-17 (35 days ago)
InstallationMedia: Ubuntu-Studio 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160216)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-03-24 (0 days ago)
VarLogDistupgradeTermlog:
This bug has been reported on the Ubuntu ISO testing tracker.
A list of all reports related to this bug can be found here:
http://