[Bug 1903584] [NEW] It says unresolvable problem occured while calculating the upgrade (from ubuntu 18.04 to 20.04).

Mon Nov 9 18:53:09 UTC 2020

Public bug reported:

It occurred while upgrading from Lubuntu 18.04.05 LTS to Lubuntu 20.04
LTS

Could not calculate the upgrade

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'.

I have only installed Steam, Pycharm Community, Python 3.8, Google
Chrome, and Zoom on this PC.

My specs:
Intel(R) Pentium(R) Dual CPU E2180 @ 2.00GHz 1 physical processor; 2 threads; 2 cores
Intel Family G33/G31 graphics
RAM: 2028964KiB (2GB)
Ubuntu Distro Flavor: Lubuntu
Ubuntu Version: 18.04.05 LTS

I am a newb to Ubuntu. So please help me with a simple solution. I have
been waiting for this update for so long. ( I don't know how to use ppa-
purge and what it is )

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.40
ProcVersionSignature: Ubuntu 4.15.0-122.124-generic 4.15.18
Uname: Linux 4.15.0-122-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: LXDE
Date: Mon Nov  9 23:56:34 2020
InstallationDate: Installed on 2020-04-16 (207 days ago)
InstallationMedia: Lubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-11-09 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update-manager.release-upgrades:
2020-11-07T22:22:02.965298

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

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

** Description changed:

  It occurred while upgrading from Lubuntu 18.04.05 LTS to Lubuntu 20.04
  LTS

  Could not calculate the upgrade

  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 
+  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'.

  I have only installed Steam, Pycharm Community, Python 3.8, Google
  Chrome, and Zoom on this PC.

  My specs:
  Intel(R) Pentium(R) Dual CPU E2180 @ 2.00GHz 1 physical processor; 2 threads; 2 cores
  Intel Family G33/G31 graphics
  RAM: 2028964KiB (2GB)
- Ubuntu Distro: Lubuntu
+ Ubuntu Distro Flavor: Lubuntu
  Ubuntu Version: 18.04.05 LTS

- 
- I am a newb to Ubuntu. So please help me with a simple solution. I have been waiting for this update for so long. ( I don't know how to use ppa-purge and what it is )
+ I am a newb to Ubuntu. So please help me with a simple solution. I have
+ been waiting for this update for so long. ( I don't know how to use ppa-
+ purge and what it is )

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.40
  ProcVersionSignature: Ubuntu 4.15.0-122.124-generic 4.15.18
  Uname: Linux 4.15.0-122-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Mon Nov  9 23:56:34 2020
  InstallationDate: Installed on 2020-04-16 (207 days ago)
  InstallationMedia: Lubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-11-09 (0 days ago)
  VarLogDistupgradeTermlog:
-  
- mtime.conffile..etc.update-manager.release-upgrades: 2020-11-07T22:22:02.965298
+ 
+ mtime.conffile..etc.update-manager.release-upgrades:
+ 2020-11-07T22:22:02.965298

-- 
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https://bugs.launchpad.net/bugs/1903584

Title:
  It says unresolvable problem occured while calculating the upgrade
  (from ubuntu 18.04 to 20.04).

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

Bug description:
  It occurred while upgrading from Lubuntu 18.04.05 LTS to Lubuntu 20.04
  LTS

  Could not calculate the upgrade

  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'.

  I have only installed Steam, Pycharm Community, Python 3.8, Google
  Chrome, and Zoom on this PC.

  My specs:
  Intel(R) Pentium(R) Dual CPU E2180 @ 2.00GHz 1 physical processor; 2 threads; 2 cores
  Intel Family G33/G31 graphics
  RAM: 2028964KiB (2GB)
  Ubuntu Distro Flavor: Lubuntu
  Ubuntu Version: 18.04.05 LTS

  I am a newb to Ubuntu. So please help me with a simple solution. I
  have been waiting for this update for so long. ( I don't know how to
  use ppa-purge and what it is )

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.40
  ProcVersionSignature: Ubuntu 4.15.0-122.124-generic 4.15.18
  Uname: Linux 4.15.0-122-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Mon Nov  9 23:56:34 2020
  InstallationDate: Installed on 2020-04-16 (207 days ago)
  InstallationMedia: Lubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-11-09 (0 days ago)
  VarLogDistupgradeTermlog:

  mtime.conffile..etc.update-manager.release-upgrades:
  2020-11-07T22:22:02.965298

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