The upgrade to 13.10 could not be calculated, though I'm running the official 13.04 version

[Gijs ter Beek]

While upgrading my computer from 13.04 to 13.10, I got the message 'An unresolvable problem occurred while calculating the upgrade'. I only use the official Ubuntu-repositories and some ppa's that can be switched off without problems.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: ubuntu-release-upgrader-core 1:0.192.13
ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic i686
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
CrashDB: ubuntu
Date: Sun Oct 20 11:46:40 2013
InstallationDate: Installed on 2012-10-19 (365 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to raring on 2013-10-20 (0 days ago)
VarLogDistupgradeTermlog:

[Brian Murray (brian-murray)]

Reviewing the files from your upgrade attempt you seem to have enabled the xorg-edgers-ppa. This will prevent the upgrade as that PPA contains different versions of packages essential to Ubuntu. The page, https://launchpad.net/~xorg-edgers/+archive/ppa, contains details on to how to revert to the official Xorg packages.