[Bug 1810613] [NEW] update-manager: upgrading to lubuntu 18.10 fails

[Irenux]

Public bug reported:

The program says it cannot upgrade lubuntu 18.04 to 18.10 because there
is something wrong with the package sources, although I disabled all
non-offical repo's and it's downloading from the official server for my
country (Netherlands).

lsb_release -rd
Description:	Ubuntu 18.04.1 LTS
Release:	18.04

Package: update-manager 1.18.04.11.8 (bionic updates)

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.29
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: LXDE
Date: Sat Jan  5 19:41:58 2019
InstallationDate: Installed on 2018-04-30 (250 days ago)
InstallationMedia: Lubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2019-01-05 (0 days ago)
VarLogDistupgradeTermlog:
 
mtime.conffile..etc.update-manager.release-upgrades: 2019-01-05T16:36:03.575056

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic dist-upgrade

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https://bugs.launchpad.net/bugs/1810613

Title:
  update-manager: upgrading to lubuntu 18.10 fails

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

Bug description:
  The program says it cannot upgrade lubuntu 18.04 to 18.10 because
  there is something wrong with the package sources, although I disabled
  all non-offical repo's and it's downloading from the official server
  for my country (Netherlands).

  lsb_release -rd
  Description:	Ubuntu 18.04.1 LTS
  Release:	18.04

  Package: update-manager 1.18.04.11.8 (bionic updates)

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.29
  ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
  Uname: Linux 4.15.0-43-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Sat Jan  5 19:41:58 2019
  InstallationDate: Installed on 2018-04-30 (250 days ago)
  InstallationMedia: Lubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2019-01-05 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2019-01-05T16:36:03.575056

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