Public bug reported:
Tried doing an upgrade from 16.04.4 to 18.04 by using the command
"sudo do-release-upgrade -d -m -desktop"
It failed giving the following errors:
(appstreamcli:16680): GLib-CRITICAL **: g_strchug: assertion 'string !=
NULL' failed
(appstreamcli:16680): GLib-CRITICAL **: g_strchomp: assertion 'string !=
NULL' failed
(appstreamcli:16680): GLib-CRITICAL **: g_strchug: assertion 'string !=
NULL' failed
(appstreamcli:16680): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL'
failed
AppStream cache update completed, but some metadata was ignored due to errors.
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 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
Reading package lists... Done
Building dependency tree
Reading state information... Done
========================================
$ lsb_release -rd
Description: Ubuntu 16.04.4 LTS
Release: 16.04
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.13.0-45.50~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-45-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sat Jun 9 02:19:03 2018
InstallationDate: Installed on 2016-05-01 (768 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-06-08 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial
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https://bugs.launchpad.net/bugs/1775883
Title:
Failed to upgrade 16.04.4 to 18.04. Process aborted
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