| Chapter 1. Introduction | ||
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| Chapter 1. Introduction | ||
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Table of Contents
This document informs users of the Debian distribution about major changes in version 12 (codenamed bookworm).
The release notes provide information on how to upgrade safely from release 11 (codenamed bullseye) to the current release and inform users of known potential issues they could encounter in that process.
You can get the most recent version of this document from https://www.debian.org/releases/bookworm/releasenotes.
![[Caution]](images/caution.png) | Caution |
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Note that it is impossible to list every known issue and that therefore a selection has been made based on a combination of the expected prevalence and impact of issues. |
Please note that we only support and document upgrading from the previous release of Debian (in this case, the upgrade from bullseye). If you need to upgrade from older releases, we suggest you read previous editions of the release notes and upgrade to bullseye first.
We have attempted to test all the different upgrade steps described in this document and to anticipate all the possible issues our users might encounter.
Nevertheless, if you think you have found a bug
(incorrect information or information that is missing)
in this documentation,
please file a bug in the bug tracking
system against the release-notes package. You
might first want to review the existing bug
reports in case the issue you've found has already been reported. Feel
free to add additional information to existing bug reports if you can
contribute content for this document.
We appreciate, and encourage, reports providing patches to the document's sources. You will find more information describing how to obtain the sources of this document in Section 1.3, “Sources for this document”.
We welcome any information from users related to upgrades from
bullseye to bookworm. If you are willing to share
information please file a bug in the bug
tracking system against the upgrade-reports package with your results.
We request that you compress any attachments that are included (using
gzip).
Please include the following information when submitting your upgrade report:
The status of your package database before and after the upgrade:
dpkg's status database available at
/var/lib/dpkg/status and
apt's package state information,
available at /var/lib/apt/extended_states. You
should have made a backup before the upgrade as described at
Section 4.1.1, “Back up any data or configuration information”, but you can also find backups of
/var/lib/dpkg/status in
/var/backups.
Session logs created using script, as described in Section 4.4.1, “Recording the session”.
Your apt logs, available at
/var/log/apt/term.log, or
your aptitude logs, available at
/var/log/aptitude.
![[Note]](images/note.png) | Note |
|---|---|
You should take some time to review and remove any sensitive and/or confidential information from the logs before including them in a bug report as the information will be published in a public database. |
The source of this document is in DocBook XML format. The HTML
version is generated using docbook-xsl and xsltproc. The PDF version is generated
using dblatex or
xmlroff. Sources for the
Release Notes are available in the Git repository of the
Debian Documentation Project. You can use
the web interface to
access its files individually through the web and see their
changes. For more information on how to access Git please
consult the Debian Documentation
Project VCS information pages.
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| Release Notes for Debian 12 (bookworm), 64-bit little-endian PowerPC |  | Chapter 2. What's new in Debian 12 |