Public bug reported:
Could not calculate the upgrade.
Doesn't tell me what the problem is. I have unchecked all other software
in "Software and Updates."
Ubuntu 16.04.5 LTS
Expected system to upgrade, or at least give me an error for what is
wrong. Instead, I get a message saying that something could be wrong,
with no pointers to where the error is.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.4.0-135.161-generic 4.4.140
Uname: Linux 4.4.0-135-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Sep 19 17:40:43 2018
InstallationDate: Installed on 2016-09-15 (734 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-09-19 (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/1793413
Title:
can't upgrade to 18.04
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