openSUSE Leap 15.2

Release Notes

openSUSE Leap is a free and Linux-based operating system for your PC, Laptop or
Server. You can surf the Web, manage your e-mails and photos, do office work,
play videos or music and have a lot of fun!

Publication Date: 2020-06-04, Version: 15.2.20200604

1 Installation
2 System Upgrade
3 Packaging Changes
4 Desktop
5 More Information and Feedback

The release notes are under constant development. To find out about the latest
updates, see the online version at https://doc.opensuse.org/release-notes. The
English release notes are updated whenever need arises. Translated language
versions can temporarily be incomplete.

If you upgrade from an older version to this openSUSE Leap release, see
previous release notes listed here: https://en.opensuse.org/
openSUSE:Release_Notes.

Information about the project is available at https://www.opensuse.org.

To report bugs against this release, use the openSUSE Bugzilla. For more
information, see https://en.opensuse.org/Submitting_Bug_Reports.

Major new features of openSUSE Leap 15.2 are also listed at https://
en.opensuse.org/Features_15.2.

1 Installation

This section contains installation-related notes. For detailed upgrade
instructions, see the documentation at https://doc.opensuse.org/documentation/
leap/startup/html/book.opensuse.startup/part-basics.html.

1.1 Using Atomic Updates With the System Role Transactional Server

The installer supports the system role Transactional Server. This system role
features an update system that applies updates atomically (as a single
operation) and makes them easy to revert should that become necessary. These
features are based on the package management tools that all other SUSE and
openSUSE distributions also rely on. This means that the vast majority of RPM
packages that work with other system roles of openSUSE Leap 15.2 also work with
the system role Transactional Server.

Note

Note: Incompatible Packages

Some packages modify the contents of /var or /srv in their RPM %post scripts.
These packages are incompatible. If you find such a package, file a bug report.

To provide these features, this update system relies on:

  • Btrfs snapshots.  Before a system update is started, a new Btrfs snapshot
    of the root file system is created. Then, all the changes from the update
    are installed into that Btrfs snapshot. To complete the update, you can
    then restart the system into the new snapshot.

    To revert the update, simply boot from the previous snapshot instead.

  • A read-only root file system.  To avoid issues with and data loss because
    of updates, the root file system must not be written to otherwise.
    Therefore, the root file system is mounted read-only during normal
    operation.

    To make this setup work, two additional changes to the file system needed
    to be made: To allow writing user configuration in /etc, this directory is
    automatically configured to use OverlayFS. /var is now a separate subvolume
    which can be written to by processes.

Important

Important: Transactional Server Needs At Least 12 GB of Disk Space

The system role Transactional Server needs a disk size of at least 12 GB to
accommodate Btrfs snapshots.

To work with transactional updates, always use the command transactional-update
instead of YaST and Zypper for all software management:

  • Update the system: transactional-update up

  • Install a package: transactional-update pkg in PACKAGE_NAME

  • Remove a package: transactional-update pkg rm PACKAGE_NAME

  • To revert the last snapshot, that is the last set of changes to the root
    file system, make sure your system is booted into the next to last snapshot
    and run: transactional-update rollback

    Optionally, add a snapshot ID to the end of the command to rollback to a
    specific ID.

When using this system role, by default, the system will perform a daily update
and reboot between 03:30 am and 05:00 am. Both of these actions are
systemd-based and if necessary can be disabled using systemctl:

systemctl disable --now transactional-update.timer rebootmgr.service

For more information about transactional updates, see the openSUSE Kubic blog
posts https://kubic.opensuse.org/blog/2018-04-04-transactionalupdates/ and
https://kubic.opensuse.org/blog/2018-04-20-transactionalupdates2/.

1.2 Installing on Hard Disks With Less Than 12 GB of Capacity

The installer will only propose a partitioning scheme if the available hard
disk size is larger than 12 GB. If you want to set up, for example, very small
virtual machines images, use the guided partitioner to tune partitioning
parameters manually.

1.3 UEFI—Unified Extensible Firmware Interface

Prior to installing openSUSE on a system that boots using UEFI (Unified
Extensible Firmware Interface), you are urgently advised to check for any
firmware updates the hardware vendor recommends and, if available, to install
such an update. A pre-installation of Windows 8 or later is a strong indication
that your system boots using UEFI.

Background: Some UEFI firmware has bugs that cause it to break if too much data
gets written to the UEFI storage area. However, there is no clear data of how
much is “too much”.

openSUSE minimizes the risk by not writing more than the bare minimum required
to boot the OS. The minimum means telling the UEFI firmware about the location
of the openSUSE boot loader. Upstream Linux kernel features that use the UEFI
storage area for storing boot and crash information (pstore) have been disabled
by default. Nevertheless, it is recommended to install any firmware updates the
hardware vendor recommends.

1.4 UEFI, GPT, and MS-DOS Partitions

Together with the EFI/UEFI specification, a new style of partitioning arrived:
GPT (GUID Partition Table). This new schema uses globally unique identifiers
(128-bit values displayed in 32 hexadecimal digits) to identify devices and
partition types.

Additionally, the UEFI specification also allows legacy MBR (MS-DOS)
partitions. The Linux boot loaders (ELILO or GRUB 2) try to automatically
generate a GUID for those legacy partitions, and write them to the firmware.
Such a GUID can change frequently, causing a rewrite in the firmware. A rewrite
consists of two different operations: Removing the old entry and creating a new
entry that replaces the first one.

Modern firmware has a garbage collector that collects deleted entries and frees
the memory reserved for old entries. A problem arises when faulty firmware does
not collect and free those entries. This can result in a non-bootable system.

To work around this problem, convert the legacy MBR partition to GPT.

2 System Upgrade

This section lists notes related to upgrading the system. For supported
scenarios and detailed upgrade instructions, see the documentation at:

  • https://en.opensuse.org/SDB:System_upgrade

  • https://doc.opensuse.org/documentation/leap/startup/html/
    book.opensuse.startup/cha-update-osuse.html

Additionally, check Section 3, “Packaging Changes”.

3 Packaging Changes

3.1 Deprecated Packages

Deprecated packages are still shipped as part of the distribution but are
scheduled to be removed the next version of openSUSE Leap. These packages exist
to aid migration, but their use is discouraged and they may not receive
updates.

  • libqt4: Will receive neither updates nor security fixes. The package will
    be removed in the next version of openSUSE Leap.

  • kdelibs4: Will receive neither updates nor security fixes. The package will
    be removed in the next version of openSUSE Leap.

To check whether installed packages are no longer maintained: Make sure that 
lifecycle-data-openSUSE is installed, then use the command:

zypper lifecycle

3.2 Removed Packages

Removed packages are not shipped as part of the distribution anymore.

  • artha: Removed because it is unmaintained and has unpatched security
    issues. See https://bugzilla.opensuse.org/show_bug.cgi?id=1143860.

  • fate: Removed because it uses insecure KDE4 and Qt4 libraries and
    features.opensuse.org is no longer used for feature requests.

  • gstreamer-plugins-qt, gstreamer-plugins-qt5, and ktp-call-ui: Removed
    because these packages are unmaintained and no longer build. The package 
    ktp-call-ui depended on gstreamer-plugins-qt.

  • H2rename: Removed because the package is unmaintained.

  • jag-level-editor: Replaced by jag-editor.

  • jovie: Removed because the package is no longer maintained upstream. See
    also https://kde.org/applications/unmaintained/org.kde.jovie.

  • kaccessible, kepas, konsole4, klinkstatus, kppp, kremotecontrol, kvpnc, and
    kvkbd: Removed because these packages are no longer maintained upstream.

  • kdesdk4-scripts: Replaced by kdesdk-scripts.

  • kdeuser: Replaced by kde-user-manager.

  • keepassx and kpassgen: Replaced by keepassxc.

  • kile5: Replaced by kile.

  • libkdegames4: Replaced by libkdegames5.

  • libkquoath, libjreen, and libqross: Removed because the packages are no
    longer maintained upstream and use the insecure libqt4.

  • lua51-luajit: Replaced by moonjit.

  • mp3gain and wxmp3gain: The package mp3gain was removed because it has a
    security issue and is no longer maintained upstream. The package wxmp3gain
    depended on mp3gain.

  • nodejs8: Replaced by nodejs10 and nodejs12.

  • python-django_compressor: Replaced by python-django-compressor.

  • python-pep8: Replaced by python-pycodestyle.

  • python-pyside and python-pyside-tools: Removed because it depends on the
    insecure libqt4.

  • qgo: Replaced by q5go.

  • slapi-nis: Removed because this module is not maintained outside of FreeIPA
    environments, and we do not ship FreeIPA.

  • tomahawk: Removed because the package is no longer maintained upstream.

  • vokoscreen: Replaced by vokoscreenNG.

4 Desktop

This section lists desktop issues and changes in openSUSE Leap 15.2.

4.1 KDE 4 and Qt 4 are unmaintained

Updating from KDE 4 and Qt 4 to Plasma 5 and Qt 5 is recommended. KDE 4 and Qt
4 are no longer supported. openSUSE Leap 15.2 still contains KDE 4 and Qt 4
packages for compatibility reasons. However these packages will no longer
receive updates and security fixes. Therefore it is strongly recommended to
replace all installed KDE 4 and Qt 4 packages with packages from Plasma 5 and
Qt 5 providing the same or at least similar functionalities.

5 More Information and Feedback

  • Read the README documents on the medium.

  • View a detailed changelog information about a particular package from its
    RPM:

    rpm --changelog -qp FILENAME.rpm

    Replace FILENAME with the name of the RPM.

  • Check the ChangeLog file in the top level of the medium for a chronological
    log of all changes made to the updated packages.

  • Find more information in the docu directory on the medium.

  • For additional or updated documentation, see https://doc.opensuse.org/.

  • For the latest product news, from openSUSE, visit https://www.opensuse.org.

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