Error upgrading to 16.04 Error during planing to upgrade

[Kenneth Jenssen]

When I try to upgrade to kubuntu 16.04, I get the error: There was a fatal error in the planning
of the upgrade

This can be because of:

- Upgrading to an unfinished version (obviously not, since 16.04 has been released)
- Running an unfinished version (No, I am running 15.10)
- Are dependent of unofficial packages that are not supported by ubuntu (Not sure, but I can't find any)

I thought it was because of cinnamon that I had installed, but I get the same error after I removed it. And I used sudo apt-get autoremove after I removed it. Restarted as well.

I have no clue why I can't upgrade. I have searched the net for similar problems, but could not find any other similar cases.

I guess that I have 1 or more package installed that blocks the upgrade, but as I said, I have no clue which one(s).

I hope someone here can find the problematic package, and let me know which one it is.

Other weird thing is, I do not have ubuntu installed. After I got rid of cinnamon, the only ones left are kubuntu and ubuntu mate.

Side-note, probably not the cause (but never know) I have Windows 10 installed as well.

If this is not a bug, please let me know. But please let me know how to fix this.

This is so weird, I do not have ubuntu installed but that is the readout I get when using lsb_release -rd
Description: Ubuntu 15.10
Release: 15.10

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubuntu-release-upgrader-core 1:15.10.14.4
ProcVersionSignature: Ubuntu 4.2.0-36.42-generic 4.2.8-ckt8
Uname: Linux 4.2.0-36-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Sat Jun 4 08:34:44 2016
InstallationDate: Installed on 2015-04-29 (401 days ago)
InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to wily on 2016-06-04 (0 days ago)

[Kenneth Jenssen (kennethjenssen-b)]

So no one will look at it?

[Brian Murray (brian-murray)]

Reviewing the files from your upgrade attempt you seem to have enabled a PPA that provides Xorg packages. 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 for the xorg-edgers PPA. Instructions for reverting to official Xorg packages should be similar for the PPA that you have enabled.