do-release-upgrade -d results in "An unresolvable problem occurred while calculating the upgrade"

[John Shipp]

I'm just trying to upgrade from to 20.04. It is the guest OS in vmware workstaion running on win7-64. I also tried installing a FRESH Ubuntu Mate 18.04 as the guest in VirtualBox running on Mate 20.04 and the same error happened when I ran do-release-upgrade.

root@VM:~# lsb_release -rd
Description: Ubuntu 18.04.4 LTS
Release: 18.04

root@VM:~# apt update
Hit:1 https://download.mono-project.com/repo/ubuntu stable-bionic InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu bionic InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:4 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:5 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
root@VM:~# apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@VM:~#
root@VM:~# apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@VM:~#
root@VM:~#
root@VM:~# do-release-upgrade
Checking for a new Ubuntu release
There is no development version of an LTS available.
To upgrade to the latest non-LTS develoment release
set Prompt=normal in /etc/update-manager/release-upgrades.
root@VM:~# do-release-upgrade -d
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [1,554 B]
Get:2 Upgrade tool [1,342 kB]
Fetched 1,343 kB in 0s (0 B/s)
authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg'
extracting 'focal.tar.gz'

Reading cache

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Hit http://us.archive.ubuntu.com/ubuntu bionic InRelease
Hit https://download.mono-project.com/repo/ubuntu stable-bionic InRelease
Hit http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit http://security.ubuntu.com/ubuntu bionic-security InRelease
Fetched 0 B in 0s (0 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done

Updating repository information

Third party sources disabled

Some third party entries in your sources.list were disabled. You can
re-enable them after the upgrade with the 'software-properties' tool
or your package manager.

To continue please press [ENTER]

Get:1 http://us.archive.ubuntu.com/ubuntu focal InRelease [265 kB]
Get:2 http://security.ubuntu.com/ubuntu focal-security InRelease [107 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease [107 kB]
Get:4 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease [98.3 kB]
Get:5 http://us.archive.ubuntu.com/ubuntu focal/main i386 Packages [718 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages [970 kB]
Get:7 http://us.archive.ubuntu.com/ubuntu focal/main Translation-en [506 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu focal/main amd64 c-n-f Metadata [29.5 kB]
Get:9 http://us.archive.ubuntu.com/ubuntu focal/universe i386 Packages [4,642 kB]
Get:10 http://security.ubuntu.com/ubuntu focal-security/main i386 Packages [27.4 kB]
Get:11 http://us.archive.ubuntu.com/ubuntu focal/universe amd64 Packages [8,628 kB]
Get:12 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [75.8 kB]
Get:13 http://us.archive.ubuntu.com/ubuntu focal/universe Translation-en [5,124 kB]
Get:14 http://security.ubuntu.com/ubuntu focal-security/main Translation-en [29.6 kB]
Get:15 http://us.archive.ubuntu.com/ubuntu focal/universe amd64 c-n-f Metadata [265 kB]
Get:16 http://security.ubuntu.com/ubuntu focal-security/main amd64 c-n-f Metadata [2,360 B]
Get:17 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [30.0 kB]
Get:18 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [127 kB]
Get:19 http://us.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [60.5 kB]
Get:20 http://us.archive.ubuntu.com/ubuntu focal-updates/main Translation-en [48.1 kB]
Get:21 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 c-n-f Metadata [3,160 B]
Get:22 http://us.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [70.1 kB]
Get:23 http://us.archive.ubuntu.com/ubuntu focal-updates/universe i386 Packages [27.4 kB]
Get:24 http://us.archive.ubuntu.com/ubuntu focal-updates/universe Translation-en [29.8 kB]
Get:25 http://us.archive.ubuntu.com/ubuntu focal-updates/universe amd64 c-n-f Metadata [2,476 B]
Get:26 http://us.archive.ubuntu.com/ubuntu focal-backports/main amd64 c-n-f Metadata [112 B]
Get:27 http://us.archive.ubuntu.com/ubuntu focal-backports/universe amd64 Packages [2,792 B]
Get:28 http://us.archive.ubuntu.com/ubuntu focal-backports/universe i386 Packages [1,956 B]
Get:29 http://us.archive.ubuntu.com/ubuntu focal-backports/universe Translation-en [1,280 B]
Get:30 http://us.archive.ubuntu.com/ubuntu focal-backports/universe amd64 c-n-f Metadata [188 B]
Get:31 http://security.ubuntu.com/ubuntu focal-security/universe i386 Packages [8,928 B]
Get:32 http://security.ubuntu.com/ubuntu focal-security/universe Translation-en [13.9 kB]
Get:33 http://security.ubuntu.com/ubuntu focal-security/universe amd64 c-n-f Metadata [1,160 B]
Fetched 22.0 MB in 0s (0 B/s)

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

Calculating the changes

Calculating the changes

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'.

Restoring original system state

Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
root@VM:~#

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.37
ProcVersionSignature: Ubuntu 5.3.0-53.47~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-53-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
CrashDB: ubuntu
Date: Thu May 21 21:25:46 2020
InstallationDate: Installed on 2019-10-22 (213 days ago)
InstallationMedia: Ubuntu-MATE 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-05-22 (0 days ago)

[John Shipp (shippj)]

This appears to affect the Mate flavor, but not the main Ubuntu (Gnome flavor). I installed a fresh VM using ubuntu-18.04.1-desktop-amd64.iso and do-release-upgrade worked fine.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Brian Murray (brian-murray)]

There is a new version of the release upgrader available which may resolve the failure to calculate the upgrade issue you encountered. Could you please try upgrading again and report back? Thanks in advance.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]