1. Found the culprits (packages with no equivalent on focal repository (python2.7, for instances), packages manually installed and, by last, very old and very specific packages related to old hardware, mostly printers);
2. Solved the issues by removing manually the offending packages listed on the upgrade log; 3. After that, upgrade to focal went almost fine, except one major issue, after reboot, there was no GUI interface, due to lack of some packages related to lightdm, although apt upgrade -f and dpkg- reconfigure didn't report anything. Solved by purging the lightdm package and reinstalled. The package re-installation did install the zillion missing packages :) ; ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Fix Committed ** Description changed: lsb_release -rd Description: Ubuntu 18.04.5 LTS Release: 18.04 ----------- apt-cache policy ubuntu-release* ubuntu-release-upgrader-qt: - Instalado: 1:18.04.38 - Candidato: 1:18.04.38 - Tabela de Versão: - *** 1:18.04.38 500 - 500 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages - 500 http://archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages - 100 /var/lib/dpkg/status - 1:18.04.17 500 - 500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages - 500 http://archive.ubuntu.com/ubuntu bionic/universe i386 Packages + Instalado: 1:18.04.38 + Candidato: 1:18.04.38 + Tabela de Versão: + *** 1:18.04.38 500 + 500 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages + 500 http://archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages + 100 /var/lib/dpkg/status + 1:18.04.17 500 + 500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages + 500 http://archive.ubuntu.com/ubuntu bionic/universe i386 Packages ubuntu-release-upgrader-core: - Instalado: 1:18.04.38 - Candidato: 1:18.04.38 - Tabela de Versão: - *** 1:18.04.38 500 - 500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages - 500 http://archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages - 100 /var/lib/dpkg/status - 1:18.04.17 500 - 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages - 500 http://archive.ubuntu.com/ubuntu bionic/main i386 Packages + Instalado: 1:18.04.38 + Candidato: 1:18.04.38 + Tabela de Versão: + *** 1:18.04.38 500 + 500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages + 500 http://archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages + 100 /var/lib/dpkg/status + 1:18.04.17 500 + 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages + 500 http://archive.ubuntu.com/ubuntu bionic/main i386 Packages ubuntu-release-upgrader-gtk: - Instalado: (nenhum) - Candidato: 1:18.04.38 - Tabela de Versão: - 1:18.04.38 500 - 500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages - 500 http://archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages - 1:18.04.17 500 - 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages - 500 http://archive.ubuntu.com/ubuntu bionic/main i386 Packages + Instalado: (nenhum) + Candidato: 1:18.04.38 + Tabela de Versão: + 1:18.04.38 500 + 500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages + 500 http://archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages + 1:18.04.17 500 + 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages + 500 http://archive.ubuntu.com/ubuntu bionic/main i386 Packages ------------------ 3) expected to upgrade to new version ------------------ 4) installer dies with message ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.38 ProcVersionSignature: Ubuntu 4.15.0-112.113-generic 4.15.18 Uname: Linux 4.15.0-112-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.16 Architecture: amd64 CrashDB: ubuntu Date: Tue Aug 11 17:16:11 2020 PackageArchitecture: all ProcEnviron: - LANGUAGE=pt:pt_BR:en - TERM=xterm-256color - PATH=(custom, no user) - LANG=pt_PT.UTF-8 - SHELL=/bin/bash + LANGUAGE=pt:pt_BR:en + TERM=xterm-256color + PATH=(custom, no user) + LANG=pt_PT.UTF-8 + SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to bionic on 2020-08-11 (0 days ago) ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891209 Title: do-release-upgrade crashes after updating apt lists with message "Impossível calcular a atualização de versão Ocorreu um problema sem solução, enquanto estava calculando a atualização. " To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1891209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs