[Bug 1784157] [NEW] 'sudo update-manager -d' failed

[Himanshu Jha]

Public bug reported:

I planned to update Ubuntu 16.04.5 LTS to Ubuntu 18.04 LTS through "sudo
update-manager -d" but it prompted with:

Could not calculate upgrade
...
..

I followed and removed all PPAs and various packages installed but still
unable to upgrade!

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
Uname: Linux 4.4.0-131-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sat Jul 28 21:53:52 2018
InstallationDate: Installed on 2016-12-30 (574 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-07-28 (0 days ago)
VarLogDistupgradeTermlog:

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


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

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1784157

Title:
  'sudo update-manager -d' failed

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

Bug description:
  I planned to update Ubuntu 16.04.5 LTS to Ubuntu 18.04 LTS through
  "sudo update-manager -d" but it prompted with:

  Could not calculate upgrade
  ...
  ..

  I followed and removed all PPAs and various packages installed but
  still unable to upgrade!

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
  Uname: Linux 4.4.0-131-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sat Jul 28 21:53:52 2018
  InstallationDate: Installed on 2016-12-30 (574 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-07-28 (0 days ago)
  VarLogDistupgradeTermlog:

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1784157/+subscriptions