Upgrade 14.10 to 15.04 not possible - Es konnte nicht ermittelt werden, welche Systemaktualisierungen verfügbar sind

Bug #1486162 reported by Cornelius Arendt
14
This bug affects 3 people
Affects Status Importance Assigned to Milestone
ubuntu-release-upgrader (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

Upgrade 14.10 to 15.04 is not possible. I tried several times.
It starts with downloading as usual.
Then always the following message is prompted: "Es konnte nicht ermittelt werden, welche Systemaktualisierungen verfügbar sind". See screenshot appended.

I tried several times since May 2015, but Upgrade results always in the same (as above).

All software is still working fine.
No Problems occured, except the upgrade problem.

Thanks for your help in advance.
Best regards,
Cornelius Arendt

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.10
ProcVersionSignature: Ubuntu 3.16.0-44.59-generic 3.16.7-ckt14
Uname: Linux 3.16.0-44-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu8.5
Architecture: amd64
CrashDB: ubuntu
Date: Tue Aug 18 19:34:47 2015
InstallationDate: Installed on 2012-05-18 (1186 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=de_DE
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to utopic on 2015-08-18 (0 days ago)
VarLogDistupgradeTermlog:

Revision history for this message
Cornelius Arendt (cornelius-arendt) wrote :
Revision history for this message
Cornelius Arendt (cornelius-arendt) wrote :

Still the same problem. No solution.
Please help.

Or should I try a complete new installation with formatting my machine, as usual for windows-users? :-(
But I use a Linux-System which should be better. :-o
Cornel

Thanks in advance for help.

Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in ubuntu-release-upgrader (Ubuntu):
status: New → Confirmed
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