Public bug reported:
Relase:
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Package version:
apt-cache policy pkgname ubuntu-release-upgrader
N: Unable to locate package pkgname
N: Unable to locate package ubuntu-release-upgrader
Expected:
After removing all 3rd party -ppas due to the error message:
"
Could not calculate the upgrade
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'.
"
Results:
After removing the launchpad ppas the upgrade fails to removing python-minimal
Relevant log snippet:
2020-10-14 18:12:23,395 DEBUG Comparing 4.15.0-118 with
2020-10-14 18:12:23,395 DEBUG Comparing 4.15.0-121 with 4.15.0-118
2020-10-14 18:12:23,567 DEBUG /openCache(), new cache size 66678
2020-10-14 18:12:23,567 DEBUG need_server_mode(): run in 'desktop' mode,
(because of pkg 'ubuntu-desktop')
2020-10-14 18:12:23,570 DEBUG quirks: running PreDistUpgradeCache
2020-10-14 18:12:23,570 DEBUG running Quirks.PreDistUpgradeCache
2020-10-14 18:12:23,570 INFO installing python-is-python2 because
python-minimal was installed
2020-10-14 18:12:23,570 DEBUG Installing 'python-is-python2' (python-minimal
was installed on the system)
2020-10-14 18:12:23,601 INFO removing python-minimal because python-is-python2
is being installed
2020-10-14 18:12:23,601 DEBUG Removing 'python-minimal' (python-is-python2 is
being installed on the system)
2020-10-14 18:12:23,601 INFO failed to remove python-minimal
2020-10-14 18:12:25,318 DEBUG Installing 'xserver-xorg-video-all' (Distro
KeepInstalledPkgs rule)
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 4.15.0-121.123-generic 4.15.18
Uname: Linux 4.15.0-121-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct 14 18:17:29 2020
EcryptfsInUse: Yes
InstallationDate: Installed on 2018-03-14 (945 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-10-15 (0 days ago)
VarLogDistupgradeTermlog:
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic dist-upgrade third-party-packages
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https://bugs.launchpad.net/bugs/1899859
Title:
Could not calculate upgrade to Ubuntu 20 due to failure to remove
python-minimal
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