Public bug reported:
(1)Description: Ubuntu 18.04.5 LTS
Release: 18.04
(2)gnome:
Installed: (none)
Candidate: 1:3.22+9
Version table:
1:3.22+9 500
500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
(3) I expected the upgrade to 20.04 from 18.04 to happen without any issues.
(4) The upgrade failed with this error message. I have also attached the
contents of /var/log/dist-upgrade/apt.log and /var/log/dist-upgrade/main.log
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 1:18.04.44
ProcVersionSignature: Ubuntu 4.15.0-149.153-generic 4.15.18
Uname: Linux 4.15.0-149-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.24
Architecture: amd64
CrashDB: ubuntu
Date: Thu Jul 1 16:27:44 2021
InstallationDate: Installed on 2019-06-27 (734 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_IN
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2021-07-01 (0 days ago)
VarLogDistupgradeTermlog:
mtime.conffile..etc.update-manager.release-upgrades: 2021-03-30T08:40:06.677120
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic dist-upgrade
** Attachment added: "main.log"
https://bugs.launchpad.net/bugs/1934297/+attachment/5508442/+files/main.log
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https://bugs.launchpad.net/bugs/1934297
Title:
upgrade to 20.04 from 18.04 unsuccessful
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