Public bug reported:
Error message (translated from Hungarian):
Preparing upgrade is unsuccessful.
There is a problem during upgrade that cannot be solved.
This can be caused by the followings:
- upgrade to a pre-release version
- running a pre-release version of Ubuntu
- Non official packages, that are not supplied by Ubuntu
Computer has an almost fresh install of 15.10 ( ~1-2 month old)
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubuntu-release-upgrader-core 1:15.10.14.4
ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
Uname: Linux 4.2.0-35-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sun May 1 06:39:31 2016
InstallationDate: Installed on 2016-03-05 (56 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to wily on 2016-05-01 (0 days ago)
VarLogDistupgradeTermlog:
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade third-party-packages wily
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https://bugs.launchpad.net/bugs/1577094
Title:
Unable to upgrade Ubuntu to 16.04 (from 15.10)
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