Public bug reported:
I am unaware of any unsupported packages installed that would prevent the
upgrade from working.
I removed as many ppa's as possible, removed any unsupported programs which
might be a problem, and fixed the parsing error 'Metadata files have errors:
/var/cache/app-info/xmls/fwupd.xml'. I'm at a loss at this point.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.15.0-32.35~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: GNOME
Date: Sat Aug 18 22:50:27 2018
InstallationDate: Installed on 2015-10-26 (1027 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-08-19 (0 days ago)
VarLogDistupgradeTermlog:
** 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/1787788
Title:
upgrade xenial --> bionic :cannot compute upgrade
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