Release Notes for Debian 11 (bullseye), 64-bit little-endian PowerPC

The Debian Documentation Project

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Table of Contents

1. Introduction
1.1. Reporting bugs on this document
1.2. Contributing upgrade reports
1.3. Sources for this document
2. What's new in Debian 11
2.1. Supported architectures
2.2. What's new in the distribution?
2.2.1. Desktops and well known packages
2.2.2. Driverless scanning and printing
2.2.3. New generic open command
2.2.4. Control groups v2
2.2.5. Persistent systemd journal
2.2.6. New Fcitx 5 Input Method
2.2.7. News from Debian Med Blend
2.2.8. Kernel support for exFAT
2.2.9. Improved man page translations
2.2.10. Improved support for alternative init systems
3. Installation System
3.1. What's new in the installation system?
3.1.1. Help with installation of firmware
3.1.2. Automated installation
3.2. Cloud installations
3.3. Container and Virtual Machine images
4. Upgrades from Debian 10 (buster)
4.1. Preparing for the upgrade
4.1.1. Back up any data or configuration information
4.1.2. Inform users in advance
4.1.3. Prepare for downtime on services
4.1.4. Prepare for recovery
4.1.5. Prepare a safe environment for the upgrade
4.2. Start from pure Debian
4.2.1. Upgrade to Debian 10 (buster)
4.2.2. Remove non-Debian packages
4.2.3. Upgrade to latest point release
4.2.4. Prepare the package database
4.2.5. Remove obsolete packages
4.2.6. Clean up leftover configuration files
4.2.7. The security section
4.2.8. The proposed-updates section
4.2.9. Unofficial sources
4.2.10. Disabling APT pinning
4.2.11. Check package status
4.3. Preparing APT source-list files
4.3.1. Adding APT Internet sources
4.3.2. Adding APT sources for a local mirror
4.3.3. Adding APT sources from optical media
4.4. Upgrading packages
4.4.1. Recording the session
4.4.2. Updating the package list
4.4.3. Make sure you have sufficient space for the upgrade
4.4.4. Minimal system upgrade
4.4.5. Upgrading the system
4.5. Possible issues during upgrade
4.5.1. Dist-upgrade fails with Could not perform immediate configuration
4.5.2. Expected removals
4.5.3. Conflicts or Pre-Depends loops
4.5.4. File conflicts
4.5.5. Configuration changes
4.5.6. Change of session to console
4.6. Upgrading your kernel and related packages
4.6.1. Installing a kernel metapackage
4.7. Preparing for the next release
4.7.1. Purging removed packages
4.8. Obsolete packages
4.8.1. Transitional dummy packages
5. Issues to be aware of for bullseye
5.1. Upgrade specific items for bullseye
5.1.1. The XFS file system no longer supports barrier/nobarrier option
5.1.2. Changed security archive layout
5.1.3. Password hashing uses yescrypt by default
5.1.4. NSS NIS and NIS+ support require new packages
5.1.5. Config file fragment handling in unbound
5.1.6. rsync parameter deprecation
5.1.7. Vim addons handling
5.1.8. OpenStack and cgroups v1
5.1.9. OpenStack API policy files
5.1.10. sendmail downtime during upgrade
5.1.11. FUSE 3
5.1.12. GnuPG options file
5.1.13. Linux enables user namespaces by default
5.1.14. Linux disables unprivileged calls to bpf() by default
5.1.15. redmine missing in bullseye
5.1.16. Exim 4.94
5.1.17. SCSI device probing is non-deterministic
5.1.18. rdiff-backup require lockstep upgrade of server and client
5.1.19. Intel CPU microcode issues
5.1.20. Upgrades involving libgc1c2 need two runs
5.1.21. fail2ban can't send e-mail using mail from bsd-mailx
5.1.22. No new SSH connections possible during upgrade
5.1.23. Things to do post upgrade before rebooting
5.2. Items not limited to the upgrade process
5.2.1. Limitations in security support
5.2.2. Accessing GNOME Settings app without mouse
5.2.3. The rescue boot option is unusable without a root password
5.3. Obsolescence and deprecation
5.3.1. Noteworthy obsolete packages
5.3.2. Deprecated components for bullseye
5.4. Known severe bugs
6. More information on Debian
6.1. Further reading
6.2. Getting help
6.2.1. Mailing lists
6.2.2. Internet Relay Chat
6.3. Reporting bugs
6.4. Contributing to Debian
A. Managing your buster system before the upgrade
A.1. Upgrading your buster system
A.2. Checking your APT source-list files
A.3. Removing obsolete configuration files
B. Contributors to the Release Notes
Index
Glossary