[Bug 1829767] Re: LTS Upgrade from Ubuntu 14.04 to 16.04 failed

[Tom Reynolds]

** Summary changed:

- upgrade to ubuntu 16 from 14 failed
+ LTS Upgrade from Ubuntu 14.04 to 16.04 failed

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https://bugs.launchpad.net/bugs/1829767

Title:
  LTS Upgrade from Ubuntu 14.04 to 16.04 failed

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

Bug description:
  Upgrade from ubuntu 14 using update-manager failed. Console log
  follows :

  Checking package manager
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done
  Building data structures... Done 

  Calculating the changes

  Calculating the changes

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  This can be caused by: 
  * Upgrading to a pre-release version of Ubuntu 
  * Running the current pre-release version of Ubuntu 
  * Unofficial software packages not provided by Ubuntu 

  If none of this applies, then please report this bug using the 
  command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. 

  
  Restoring original system state

  Aborting
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done
  Building data structures... Done 
  gerard at ASUS-HP-UB:~$ sudo ubuntu-bug ubuntu-release-upgrader-core

  (apport-gtk:15348): Gtk-WARNING **: Locale not supported by C library.
          Using the fallback 'C' locale.

  (firefox:15645): Gtk-WARNING **: Locale not supported by C library.
          Using the fallback 'C' locale.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.11
  ProcVersionSignature: Ubuntu 3.19.0-80.88~14.04.1-generic 3.19.8-ckt22
  Uname: Linux 3.19.0-80-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.29
  Architecture: amd64
  CrashDB: ubuntu
  Date: Mon May 20 16:39:21 2019
  InstallationDate: Installed on 2015-09-25 (1332 days ago)
  InstallationMedia: Kubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2019-05-20 (0 days ago)

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