Public bug reported:
Xubuntu 16.04.6
ubuntu-release-upgrader-core 1:16.04.26
Expected: upgrade to 18.04.2
What happened: error: "Invalid package information
After updating your package information, the essential package 'ubuntu-minimal'
could not be located. This may be because you have no official mirrors listed
in your software sources, or because of excessive load on the mirror you are
using. See /etc/apt/sources.list for the current list of configured software
sources.
In the case of an overloaded mirror, you may want to try the upgrade again
later."
After upgrading from 14.04 to 16.04.6, my wifi stopped working. I took
my PC to work to connect to the internet via network cable, and it was
successful in doing several security and other updates, including linux-
image-4.4.0-145-generic. After that, "Software Updater" offered to
upgrade me to 18.04.2, but kept giving the quoted error above.
Under "Settings..." ("Software & Updates"), "Ubuntu Software", "Download
from:" I changed it to "Main server", but got the same error. Going back
to "Server for South Africa" gave the same error, including when picking
all 3 listed South African servers. Most recently I tried the Swedish
server "http://ftp.acc.umu.se/ubuntu";, but still get the same error.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.26
ProcVersionSignature: Ubuntu 4.4.0-145.171-generic 4.4.176
Uname: Linux 4.4.0-145-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
Date: Tue Apr 23 12:56:52 2019
InstallationDate: Installed on 2014-06-03 (1784 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
PackageArchitecture: all
ProcEnviron:
LANGUAGE=en_ZA:en
LC_TIME=en_za.UTF-8
PATH=(custom, no user)
LANG=en_ZA.UTF-8
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2019-04-23 (0 days ago)
VarLogDistupgradeAptlog:
Log time: 2019-04-23 12:56:25.628450
Log time: 2019-04-23 12:56:27.084296
Log time: 2019-04-23 12:56:43.892373
Log time: 2019-04-23 12:56:54.211214
VarLogDistupgradeTermlog:
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade xenial
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https://bugs.launchpad.net/bugs/1825978
Title:
Xubuntu 16.04.6 upgrading to 18.04.2 error: essential package 'ubuntu-
minimal' could not be located
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