[Bug 1486162] Re: Upgrade 14.10 to 15.04 not possible - Es konnte nicht ermittelt werden, welche Systemaktualisierungen verfügbar sind

[Cornelius Arendt]

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.

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

Status in ubuntu-release-upgrader package in Ubuntu:
  New

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:

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