[Bug 1623563] [NEW] The upgrade from Ubuntu 14.04 to 16.04 crashes

[Tiziano Abbà]

Public bug reported:

The upgrading process stops with these massages:
"Impossible to calculate the advancement.
An unsolvable problem happens during the calculation of the advancement."

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 4.4.0-36.55~14.04.1-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Sep 14 17:24:20 2016
InstallationDate: Installed on 2016-06-06 (100 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-09-14 (0 days ago)
VarLogDistupgradeTermlog:

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


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

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https://bugs.launchpad.net/bugs/1623563

Title:
  The upgrade from Ubuntu 14.04 to 16.04 crashes

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

Bug description:
  The upgrading process stops with these massages:
  "Impossible to calculate the advancement.
  An unsolvable problem happens during the calculation of the advancement."

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 4.4.0-36.55~14.04.1-generic 4.4.16
  Uname: Linux 4.4.0-36-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed Sep 14 17:24:20 2016
  InstallationDate: Installed on 2016-06-06 (100 days ago)
  InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-09-14 (0 days ago)
  VarLogDistupgradeTermlog:

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