Upgrade from 14.04 to 15.04 failed due to ubuntu-desktop not being installed

[Dane Mutters]

Upgrade failed due to the above-mentioned contingency.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
Uname: Linux 3.13.0-74-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Thu Jan 7 22:39:13 2016
InstallationDate: Installed on 2013-05-16 (967 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-08 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update.manager.release.upgrades: 2016-01-07T18:01:55.110369

[Brian Murray (brian-murray)]

Please install the ubuntu-desktop meta package and try the upgrade again.

2016-01-07 22:36:12,485 DEBUG plugins for condition 'from_trustyPostDistUpgradeCache' are '[]'
2016-01-07 22:36:12,485 DEBUG none of the '['ubuntu-desktop', 'kubuntu-desktop', 'xubuntu-core', 'xubuntu-desktop', 'ubuntustudio-desktop', 'mythbuntu-desktop', 'kubuntu-netbook', 'lubuntu-core', 'lubuntu-desktop', 'ubuntu-gnome-desktop']' meta-pkgs installed
2016-01-07 22:36:12,486 DEBUG guessing 'ubuntu-desktop' as missing meta-pkg

[Dane Mutters (dmutters)]

Odd. I originally titled this bug report with the error message I got, regarding a file having been modified in /etc; but I never edited that file (hadn't heard of it until the error message). I would think that the solution in such an instance might be to simply overwrite the file, unless doing so is likely to cause problems for the user's data or installed (still-compatible) programs.

I'm sorry to report that I did a clean installation before realizing that I would need to provide further details about the possible bug. (I was on a time crunch to get the machine updated.) I hope some of the submitted info proves useful, somehow; otherwise, don't worry about it.

Thanks for your work. :-)

[Launchpad Janitor (janitor)]

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