Lubuntu-Upgrade to 18.04.01 fails

[Steffen]

Es konnte nicht ermittelt werden, welche Systemaktualisierungen verfügbar sind

Ein unlösbares Problem trat beim Ermitteln der Systemaktualisierung auf.

 Dies kann verursacht worden sein durch:
 * Aktualisieren auf eine Vorabversion von Ubuntu
 * Verwendung der aktuellen Vorabversion von Ubuntu
 * Inoffizielle Softwarepakete, die nicht von Ubuntu bereitgestellt wurden

Falls nichts von dem zutrifft, melden Sie diesen Fehler bitte, indem Sie den Befehl »ubuntu-bug ubuntu-release-upgrader-core« in einem Terminal ausführen.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.4.0-134.160-generic 4.4.140
Uname: Linux 4.4.0-134-generic i686
NonfreeKernelModules: talpa_vfshook talpa_pedconnector talpa_pedevice talpa_vcdevice talpa_core talpa_linux talpa_syscallhook
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: LXDE
Date: Sat Sep 8 22:31:33 2018
InstallationDate: Installed on 2016-01-02 (979 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-09-08 (0 days ago)
VarLogDistupgradeTermlog:

[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 package version numbers greater than the release to which you are upgrading. You can revert the PPA by installing the ppa-purge package from the official Ubuntu archive and then running 'sudo ppa-purge oibaf'. After that you try upgrading and again and if it still fails open a new bug report. Thanks and good luck!

[Steffen (canon0815)]

Many thanks for help. My System is updatetd to Ubuntu 18.04.

Am 10.09.2018 um 18:05 schrieb Brian Murray:
> *** This bug is a duplicate of bug 1069133 ***
> https://bugs.launchpad.net/bugs/1069133
>
> 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 package version numbers greater than the release to which
> you are upgrading. You can revert the PPA by installing the ppa-purge
> package from the official Ubuntu archive and then running 'sudo ppa-
> purge oibaf'. After that you try upgrading and again and if it still
> fails open a new bug report. Thanks and good luck!
>
> ** Changed in: ubuntu-release-upgrader (Ubuntu)
> Status: New => Invalid
>
> ** Tags added: ppa xorg-oibaf-ppa
>
> ** This bug has been marked a duplicate of bug 1069133
> Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa
>