Can't install 'ubuntu-desktop'

[Daniel B.]

Similarly to another bug (#1059834) which has been reported already, but this time it is about the upgrade 13.10 => 14.04 (that's why I opened a new bug). The upgrade sequence stopped at the second point (installing new package sources if I remember correctly) telling me the following:

Can't install 'ubuntu-desktop'
It was impossible to install a required package. Please report this as a bug using 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-release-upgrader-core 1:0.205.5
ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
Uname: Linux 3.11.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CrashDB: ubuntu
Date: Fri Apr 18 12:04:23 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-03-19 (394 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to saucy on 2014-04-18 (0 days ago)
VarLogDistupgradeTermlog:

[Jean-Baptiste Lallement (jibel)]

Thanks for your report.

This is because you have packages from gnome3 PPA installed on your system. Please revert them to the version from the official Ubuntu repository. I'm closing this report because it is not a bug in Ubuntu.