[Bug 1877732] [NEW] Error:could not calculate the upgrade while updating

[Anagh Sharma]

Public bug reported:

While upgarading from ubuntu 16.04 to 18.04 this error : Could not calculate the upgrade occured.
Initially it said to remove unofficial software packages not provided by ubuntu. I did it. But after that the same error showed but this time it doesn't said to remove unofficial pacakages. It just that report it or otherwise you may try yourself by viewing apt.lof and main.log. I tried to see through them and found many packages related to ROS being broken. Now I don't know what to do further.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.29
ProcVersionSignature: Ubuntu 4.15.0-99.100~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-99-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sat May  9 16:23:29 2020
InstallationDate: Installed on 2019-10-30 (191 days ago)
InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release amd64 (20190227)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2020-05-09 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade 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/1877732

Title:
  Error:could not calculate the upgrade while updating

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

Bug description:
  While upgarading from ubuntu 16.04 to 18.04 this error : Could not calculate the upgrade occured.
  Initially it said to remove unofficial software packages not provided by ubuntu. I did it. But after that the same error showed but this time it doesn't said to remove unofficial pacakages. It just that report it or otherwise you may try yourself by viewing apt.lof and main.log. I tried to see through them and found many packages related to ROS being broken. Now I don't know what to do further.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.29
  ProcVersionSignature: Ubuntu 4.15.0-99.100~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-99-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.23
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sat May  9 16:23:29 2020
  InstallationDate: Installed on 2019-10-30 (191 days ago)
  InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release amd64 (20190227)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2020-05-09 (0 days ago)
  VarLogDistupgradeTermlog:

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1877732/+subscriptions