(SOLVED) Can't upgrade to 16.04

[ubuntu38]

Updating repository information

Third party sources disabled

Some third party entries in your sources.list were disabled. You can
re-enable them after the upgrade with the 'software-properties' tool
or your package manager.

To continue please press [ENTER]

Get:1 http://se.archive.ubuntu.com xenial InRelease [247 kB]
Get:2 http://security.ubuntu.com xenial-security InRelease [82,2 kB]
Get:3 http://archive.canonical.com xenial InRelease [11,5 kB]
Get:4 http://se.archive.ubuntu.com xenial-updates InRelease [82,2 kB]
Get:5 http://archive.canonical.com xenial/partner amd64 Packages [2 712 B]
Get:6 http://se.archive.ubuntu.com xenial/main Sources [868 kB]
Get:7 http://archive.canonical.com xenial/partner i386 Packages [3 020 B]
Get:8 http://security.ubuntu.com xenial-security/main Sources [28 B]
Get:9 http://archive.canonical.com xenial/partner Translation-en [1 424 B]
Get:10 http://se.archive.ubuntu.com xenial/restricted Sources [4 808 B]
Get:11 http://security.ubuntu.com xenial-security/restricted Sources [28 B]
Get:12 http://se.archive.ubuntu.com xenial/universe Sources [7 728 kB]
Get:13 http://security.ubuntu.com xenial-security/universe Sources [28 B]
Get:14 http://security.ubuntu.com xenial-security/multiverse Sources [28 B]
Get:15 http://security.ubuntu.com xenial-security/main amd64 Packages [28 B]
Get:16 http://security.ubuntu.com xenial-security/restricted amd64 Packages [28 B]
Get:17 http://security.ubuntu.com xenial-security/universe amd64 Packages [28 B]
Get:18 http://security.ubuntu.com xenial-security/multiverse amd64 Packages [28 B]
Get:19 http://security.ubuntu.com xenial-security/main i386 Packages [28 B]
Get:20 http://security.ubuntu.com xenial-security/restricted i386 Packages [28 B]
Get:21 http://security.ubuntu.com xenial-security/universe i386 Packages [28 B]
Get:22 http://se.archive.ubuntu.com xenial/multiverse Sources [179 kB]
Get:23 http://security.ubuntu.com xenial-security/multiverse i386 Packages [28 B]
Get:24 http://se.archive.ubuntu.com xenial/main amd64 Packages [1 201 kB]
Get:25 http://security.ubuntu.com xenial-security/main Translation-en [28 B]
Get:26 http://security.ubuntu.com xenial-security/multiverse Translation-en [28 B]
Get:27 http://se.archive.ubuntu.com xenial/restricted amd64 Packages [8 344 B]
Get:28 http://security.ubuntu.com xenial-security/restricted Translation-en [28 B]
Get:29 http://se.archive.ubuntu.com xenial/universe amd64 Packages [7 532 kB]
Get:30 http://security.ubuntu.com xenial-security/universe Translation-en [28 B]
Get:31 http://se.archive.ubuntu.com xenial/multiverse amd64 Packages [144 kB]
Get:32 http://se.archive.ubuntu.com xenial/main i386 Packages [1 196 kB]
Get:33 http://se.archive.ubuntu.com xenial/restricted i386 Packages [8 684 B]
Get:34 http://se.archive.ubuntu.com xenial/universe i386 Packages [7 512 kB]
Get:35 http://se.archive.ubuntu.com xenial/multiverse i386 Packages [140 kB]
Get:36 http://se.archive.ubuntu.com xenial/main Translation-en [568 kB]
Get:37 http://se.archive.ubuntu.com xenial/multiverse Translation-en [106 kB]
Get:38 http://se.archive.ubuntu.com xenial/restricted Translation-en [2 908 B]
Get:39 http://se.archive.ubuntu.com xenial/universe Translation-en [4 354 kB]
Get:40 http://se.archive.ubuntu.com xenial-updates/main Sources [28 B]
Get:41 http://se.archive.ubuntu.com xenial-updates/restricted Sources [28 B]
Get:42 http://se.archive.ubuntu.com xenial-updates/universe Sources [28 B]
Get:43 http://se.archive.ubuntu.com xenial-updates/multiverse Sources [28 B]
Get:44 http://se.archive.ubuntu.com xenial-updates/main amd64 Packages [28 B]
Get:45 http://se.archive.ubuntu.com xenial-updates/restricted amd64 Packages [28 B]
Get:46 http://se.archive.ubuntu.com xenial-updates/universe amd64 Packages [28 B]
Get:47 http://se.archive.ubuntu.com xenial-updates/multiverse amd64 Packages [28 B]
Get:48 http://se.archive.ubuntu.com xenial-updates/main i386 Packages [28 B]
Get:49 http://se.archive.ubuntu.com xenial-updates/restricted i386 Packages [28 B]
Get:50 http://se.archive.ubuntu.com xenial-updates/universe i386 Packages [28 B]
Get:51 http://se.archive.ubuntu.com xenial-updates/multiverse i386 Packages [28 B]
Get:52 http://se.archive.ubuntu.com xenial-updates/main Translation-en [28 B]
Get:53 http://se.archive.ubuntu.com xenial-updates/multiverse Translation-en [28 B]
Get:54 http://se.archive.ubuntu.com xenial-updates/restricted Translation-en [28 B]
Get:55 http://se.archive.ubuntu.com xenial-updates/universe Translation-en [28 B]
Fetched 32,0 MB in 6s (4 929 kB/s)

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done

Calculating the changes

Calculating the changes

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

This can be caused by:
* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by Ubuntu

If none of this applies, then please report this bug using the
command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.

Restoring original system state

Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubuntu-release-upgrader-core 1:15.10.14.4
ProcVersionSignature: Ubuntu 4.2.0-36.41-generic 4.2.8-ckt8
Uname: Linux 4.2.0-36-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: GNOME
Date: Sun Apr 24 12:46:41 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-10-26 (181 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20151017.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to wily on 2016-04-24 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[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.

[ubuntu38 (ubuntu38)]

Brian: You were spot on. I had to ppa-purge the PPA and then the upgrade worked flawlessly. Thank you!