Si è verificato un problema irresolubile durante il calcolo dell'avanzamento.

[oliviero lodi]

Avanzamento da ubuntu 18.04 lts a ubuntu 20.04 lts

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38 [origin: unknown]
ProcVersionSignature: Ubuntu 5.4.0-48.52~18.04.1-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 5 16:06:54 2020
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to bionic on 2020-10-05 (0 days ago)
mtime.conffile..etc.update-manager.release-upgrades: 2020-10-05T15:48:45.871023

[Brian Murray (brian-murray)]

The upgrade failed to calculate because every entry in your /etc/apt/sources.list file has been commented out. In order for the upgrae to proceed you'll need to ensure your /etc/apt/sources.list file contains valid mirrors. One way to do this may be to use the application software-properties to choose a mirror of the Ubuntu archive near you. Thanks and good luck.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]