Cannot upgrade from 14.04 to 15.05, starting system check

[Alberto Fusari]

Cannot start upgrade from 14.04 to 15.04, I'll verify if some applications may interfere with the process, please have a check to help me find the bug-error on my computer.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.16.0-57.77~14.04.1-generic 3.16.7-ckt20
Uname: Linux 3.16.0-57-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Fri Jan 8 14:34:01 2016
InstallationDate: Installed on 2015-03-05 (308 days ago)
InstallationMedia: Lubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-08 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2016-01-08T14:30:03.644157

[Brian Murray (brian-murray)]

From VarLogDistUpgradeMainlog.txt:

2016-01-08 14:33:08,811 DEBUG /openCache(), new cache size 76376
2016-01-08 14:33:08,812 DEBUG need_server_mode(): can not find a desktop meta package or key deps, running in server mode

Please install one of the following meta packages for the upgrade to be better calculated.

10 # Distro contains global information about the upgrade
 11 [Distro]
 12 # the meta-pkgs we support
 13 MetaPkgs=ubuntu-desktop, kubuntu-desktop, xubuntu-core,
 14 xubuntu-desktop, ubuntustudio-desktop, mythbuntu-desktop,
 15 kubuntu-netbook, lubuntu-core, lubuntu-desktop, ubuntu-gnome-desktop

You probably want the xubuntu-desktop meta package given you are using XFCE.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]