[Bug 1860611] [NEW] xubuntu - cannot upgrade from 18.04 to 19.04

[Lucas Torres]

Public bug reported:

The error message received when trying to upgrade goes as follows:


An unresolvable problem occurred while calculating the upgrade.

This was likely caused by:
* Unofficial software packages not provided by Ubuntu

Please use the tool 'ppa-purge' from the ppa-purge package to remove
software from a Launchpad PPA and try the upgrade again.

If none of this applies, then please report this bug using the command
'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to
investigate this yourself the log files in '/var/log/dist-upgrade/' will
contain details about the upgrade. Specifically, look at 'main.log' and
'apt.log'.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.36
ProcVersionSignature: Ubuntu 4.15.0-74.84-generic 4.15.18
Uname: Linux 4.15.0-74-generic x86_64
NonfreeKernelModules: talpa_vfshook talpa_pedconnector talpa_pedevice talpa_vcdevice talpa_core talpa_linux talpa_syscallhook
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
CrashDB: ubuntu
Date: Wed Jan 22 21:59:00 2020
InstallationDate: Installed on 2019-07-24 (182 days ago)
InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-01-22 (0 days ago)
VarLogDistupgradeTermlog:
 
mtime.conffile..etc.update-manager.release-upgrades: 2020-01-11T15:14:53.647131

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


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

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https://bugs.launchpad.net/bugs/1860611

Title:
  xubuntu - cannot upgrade from 18.04 to 19.04

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

Bug description:
  The error message received when trying to upgrade goes as follows:

  
  An unresolvable problem occurred while calculating the upgrade.

  This was likely caused by:
  * Unofficial software packages not provided by Ubuntu

  Please use the tool 'ppa-purge' from the ppa-purge package to remove
  software from a Launchpad PPA and try the upgrade again.

  If none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want
  to investigate this yourself the log files in '/var/log/dist-upgrade/'
  will contain details about the upgrade. Specifically, look at
  'main.log' and 'apt.log'.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.36
  ProcVersionSignature: Ubuntu 4.15.0-74.84-generic 4.15.18
  Uname: Linux 4.15.0-74-generic x86_64
  NonfreeKernelModules: talpa_vfshook talpa_pedconnector talpa_pedevice talpa_vcdevice talpa_core talpa_linux talpa_syscallhook
  ApportVersion: 2.20.9-0ubuntu7.9
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Jan 22 21:59:00 2020
  InstallationDate: Installed on 2019-07-24 (182 days ago)
  InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-01-22 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2020-01-11T15:14:53.647131

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