[Bug 1684340] [NEW] Cannot upgrade from 16.10 to 17.04: "An unresolvable problem occurred while calculating the upgrade. "

[Emmanuel Sales]

Public bug reported:

Tried to run do-release-upgrade, after downloading packages it resulted
in this:

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


Info: 

- lsb_release -rd

Description:    Ubuntu 16.10
Release:        16.10

- apt-cache policy ubuntu-release-upgrader-core
ubuntu-release-upgrader-core:
  Installed: 1:16.10.8
  Candidate: 1:16.10.10
  Version table:
     1:16.10.10 500
        500 http://ca.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 Packages
        500 http://ca.archive.ubuntu.com/ubuntu yakkety-updates/main i386 Packages
 *** 1:16.10.8 100
        100 /var/lib/dpkg/status
     1:16.10.6 500
        500 http://ca.archive.ubuntu.com/ubuntu yakkety/main amd64 Packages
        500 http://ca.archive.ubuntu.com/ubuntu yakkety/main i386 Packages
        500 http://cz.archive.ubuntu.com/ubuntu yakkety/main amd64 Packages
        500 http://cz.archive.ubuntu.com/ubuntu yakkety/main i386 Packages

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: ubuntu-release-upgrader-core 1:16.10.8
ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6
Uname: Linux 4.8.0-30-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Wed Apr 19 19:25:55 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-02-22 (422 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to yakkety on 2017-04-20 (0 days ago)

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


** Tags: amd64 apport-bug dist-upgrade yakkety

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https://bugs.launchpad.net/bugs/1684340

Title:
  Cannot upgrade from 16.10 to 17.04: "An unresolvable problem occurred
  while calculating the upgrade. "

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

Bug description:
  Tried to run do-release-upgrade, after downloading packages it
  resulted in this:

  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

  
  Info: 

  - lsb_release -rd

  Description:    Ubuntu 16.10
  Release:        16.10

  - apt-cache policy ubuntu-release-upgrader-core
  ubuntu-release-upgrader-core:
    Installed: 1:16.10.8
    Candidate: 1:16.10.10
    Version table:
       1:16.10.10 500
          500 http://ca.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 Packages
          500 http://ca.archive.ubuntu.com/ubuntu yakkety-updates/main i386 Packages
   *** 1:16.10.8 100
          100 /var/lib/dpkg/status
       1:16.10.6 500
          500 http://ca.archive.ubuntu.com/ubuntu yakkety/main amd64 Packages
          500 http://ca.archive.ubuntu.com/ubuntu yakkety/main i386 Packages
          500 http://cz.archive.ubuntu.com/ubuntu yakkety/main amd64 Packages
          500 http://cz.archive.ubuntu.com/ubuntu yakkety/main i386 Packages

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: ubuntu-release-upgrader-core 1:16.10.8
  ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6
  Uname: Linux 4.8.0-30-generic x86_64
  ApportVersion: 2.20.3-0ubuntu8
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Wed Apr 19 19:25:55 2017
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2016-02-22 (422 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to yakkety on 2017-04-20 (0 days ago)

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