[Bug 1790080] [NEW] Ubuntu 16.04.5 LTS to 18.04.1 LTS upgrade tentative

[Matthias Dieter Wallnöfer]

Public bug reported:

I have tried to perform an upgrade to Ubuntu 18.04.1 LTS where the
process failed on step 2 "New package sources are set up" ("Neue
Paketquellen werden eingerichtet"). There appears a message box telling
me that it could not determine which system updates would be available
("Es konnte nicht ermittelt werden, welche Systemaktualisierungen
verfügbar sind").

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.15.0-33.36~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-33-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: X-Cinnamon
Date: Fri Aug 31 10:31:24 2018
EcryptfsInUse: Yes
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-08-31 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial

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https://bugs.launchpad.net/bugs/1790080

Title:
  Ubuntu 16.04.5 LTS to 18.04.1 LTS upgrade tentative

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

Bug description:
  I have tried to perform an upgrade to Ubuntu 18.04.1 LTS where the
  process failed on step 2 "New package sources are set up" ("Neue
  Paketquellen werden eingerichtet"). There appears a message box
  telling me that it could not determine which system updates would be
  available ("Es konnte nicht ermittelt werden, welche
  Systemaktualisierungen verfügbar sind").

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.15.0-33.36~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-33-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: X-Cinnamon
  Date: Fri Aug 31 10:31:24 2018
  EcryptfsInUse: Yes
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-08-31 (0 days ago)
  VarLogDistupgradeTermlog:

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