Ubuntu 26.04 LTS summary¶

If you’re upgrading from Ubuntu 24.04 LTS (Noble Numbat), you receive the changes that happened in all the interim releases between Ubuntu 24.04 LTS and 26.04 LTS, as well as the most recent changes since Ubuntu 25.10.

For details, see the complete interim release notes: 24.10, 25.04 and 25.10. Finally, review the latest Ubuntu 26.04 LTS changes since 25.10.

The following is an overview of the major changes.

Desktop¶

Updated applications¶

Firefox 🔥🦊 has been updated to version 150.
LibreOffice 📚 has been updated from version 24.2 to 25.8.
Thunderbird 🌩️🐦 has been updated to version 140 “Eclipse”.
GNU Image Manipulation Program 🖼️ has received a major update from version 2.10 via 3.0 to 3.2.

GNOME 50¶

The GNOME desktop environment has been updated to version 50. Notable changes since GNOME 46 found in Ubuntu 24.04 LTS include the following:

From GNOME 47

Support for small screens has been enhanced. Dialog windows are also more usable on narrow screens.
Screen recording can be hardware-accelerated.
Application rendering is now more responsive on slower devices.
Remote login sessions persist if you disconnect.
The file selection dialog is now based on the Files app, enabling more features.
The Files app improves the navigation of network resources and other locations. It also shows more information on your search progress.
Accessibility settings add the Activate windows on hover option.
Keyboard settings show a preview of your keyboard layout in the add dialog.
Power settings add new suspend timers for mobile devices.
The Web app can automatically fill forms, comes with a redesigned bookmarks sidebar and provides a privacy report.
In the Calendar app, the event details popover has been redesigned.

From GNOME 48

Notifications are now grouped by application to prevent the list from getting too long.
GNOME now includes the triple buffering feature from Ubuntu, improving responsiveness.
Certain core GNOME components now use less CPU and memory.
The image viewer now supports simple image editing.
Digital Wellbeing features are now available, including screen time limits and break reminders.
A new battery health preservation option is available.
The Calendar app now supports managing events across multiple timezones.
High Dynamic Range (HDR) output is now available for displays that support it.
The design of the Text Editor app has been improved.
Apps can now set up system-wide keyboard shortcuts.
New windows are now placed in the center of the screen by default.
Screen reader shortcuts, such as the CapsLock Orca modifier, now function correctly in the Wayland session.

From GNOME 49

The calendar app is now fully accessible when using the keyboard.
The Web app improves ad-blocking, estimates page reading time, enhances security options and improves search.
The remote desktop solution now supports multi-touch input for touch screens, relative mouse input for gaming, and extended virtual monitors.
Media playback controls are now displayed on the lock screen.
The accessibility menu is now easier to find on the login screen.

From GNOME 50

Parental control options have been enhanced.
The Orca screen reader has been significantly improved.
A new Reduced Motion option enables you to reduce interface animations.
The annotation feature in the Document Viewer app has been modernized.
The Files app brings better performance and reliability, as well as a more refined user interface.
The Calendar app introduces an attendee list feature and comes with a more polished event management interface.
Date & Time settings enable you to set the first day of the week.
Sound settings more clearly distinguish between input and output.
The GNOME remote desktop solution enables hardware acceleration to improve performance. It also provides a more stable experience with NVIDIA drivers, scales HiDPI displays correctly and enables you to use your webcam from a remote connection.
Variable Refresh Rate (VRR) and Fractional Scaling Support have been improved.
The mouse cursor now operates smoothly at the maximum frame rate even if a game or professional app is running at a lower frame rate.
The desktop is now smoother with NVIDIA drivers.
Color management has been updated to the latest Wayland standard.
You can now record or screen-share monitors displaying High Dynamic range (HDR) content.

Other major highlights

You can now set an application to start automatically after login in Settings ‣ Apps.
Fractional scaling is now enabled by default. Fractional scaling factors have been optimized so as to minimize blur.
The default monospace font size has been reduced to match the default user interface font size. The monospace font is used in terminals and similar applications.
The Sysprof app is installed by default as a new system utility. This makes it easier to discover performance issues in your apps.

For details, see the upstream release notes: GNOME 47, GNOME 48, GNOME 49 and GNOME 50.

Added a GNOME Shell search provider for snap applications¶

Added in version 26.04.

The GNOME Shell global search gained the ability to search for the available snap applications that match the search criteria.

This feature can be disabled in the Search panel of the Settings app.

Added a GNOME Shell search provider for web search¶

Added in version 26.04.

You can now initiate a web search with your default browser from the GNOME Shell global search in the overview.

This feature can be disabled in the Search panel of the Settings app.

Accessibility improvements and fixes¶

Added in version 26.04.

On top of the upstream improvements, the Ubuntu extensions have been improved to better address various accessibility requirements.

Yaru theme updates¶

Added in version 26.04.

The Yaru theme has moved closer to the looks of the upstream GNOME theme. It has also received many icon updates.

Improved integration with snap applications¶

Added in version 26.04.

Snap applications using XDG Desktop Portals are now better integrated into the desktop. Users can fully manage their access permissions and reach resources outside of the application’s confinement in a natural way.

In particular:

It’s possible to open files or directories located in any path of the system with other desktop applications. For example, it’s possible to open any file regardless of its location with the file manager using a snap application. This applies both to opening the file explicitly and using drag-and-drop.
It’s possible to use Camera, Notification, USB and other XDG Desktop portals.
Snap application portal permissions can be controlled in GNOME Settings.

New document viewer¶

Changed in version 25.04.

The Document Viewer app for viewing PDFs is now provided by Papers instead of Evince. Papers started with the Evince codebase but it has been updated to use GTK4 and partially rewritten in Rust.

New image viewer¶

Changed in version 25.10.

The Image Viewer app is now provided by Loupe instead of Eye of GNOME (EOG). Loupe is written in Rust and powered by the Glycin library.

New terminal emulator¶

Changed in version 25.10.

The Terminal app is now provided by Ptyxis instead of GNOME Terminal.

Some of its major features:

Quick access to containers through podman, toolbox or distrobox
Session-save to restore tabs in their directory as well as their container after re-opening the app
Light and dark theme support with color palettes that extend into the window itself

New system monitor¶

The Resources app now replaces the System Monitor app and the Power Statistics app in the GNOME environment.

Resources enable you to monitor the utilization of your system resources, including the CPU, memory, GPU, network and storage and power usage. Compared to System Monitor, it comes with the following enhancements:

It groups processes into apps.
It tracks GPU usage, including video encoder and decoder usage.
It tracks Neural Processing Unit (NPU) usage.
It tracks hardware statistics like CPU, GPU and memory clock frequency.
It features a modern and accessible interface based on GTK 4 and libadwaita.
The app is written in the Rust programming language.

New default video player¶

The default video player is now Showtime, replacing Totem.

New video and audio thumbnailers¶

Previously, video and audio thumbnails were generated by the Totem video thumbnailer. Now, the gst-thumbnailers project handles the same functionality.

The new thumbnailers are written using the Rust GStreamer bindings and rely on the Glycin library for image handling. They do a better job at finding “interesting” frames than the previous Totem thumbnailers.

Tracker Miners updated to LocalSearch¶

The Tracker Miners indexer has been renamed to LocalSearch. See the upstream announcement. Ubuntu 26.04 LTS ships a substantial update of this tool from version 3.8.2 to 3.11.

For LocalSearch to be able to index audio files, video files, ISO files and certain zip-compressed office files, you need to select Install third-party software for graphics and Wi-Fi hardware and additional media formats during the Ubuntu installation. You can also install the extractors manually after installation with the following command:

sudo apt install localsearch-extractor-{ffmpeg,iso,office}

Wayland session¶

Changed in version 25.10.

The Ubuntu Desktop session now runs only on the Wayland back end, because GNOME Shell can no longer run as an X.org session.

You can still run applications developed for X.org through the XWayland compatibility layer.

Other desktop sessions, such as KDE on X11, Xfce, MATE, i3 and many others, can still be launched using an X.org session.

Machines using Nvidia graphics now fully support Wayland.

Software & Updates app¶

Ubuntu Desktop no longer includes the Software & Updates settings app by default. For more details, see the Discourse announcement.

The app is still available in the Ubuntu repository and it’s been updated to use the GTK 4 toolkit.

You can install the app manually with the following command:

sudo apt install software-properties-gtk

App Center enhancements¶

Added in version 24.10.

The App Center now includes improvements, including:

Installs in progress
Improved self-update handling
Messaging for running snaps
Direct uninstall of snaps from the manage page
Scrolling support for touch screens
Third party Deb installation

Security Center¶

Added in version 24.10.

A new Security Center is included. It features the ability to easily enable or disable a new experimental permissions prompting feature for Home directory permissions.

Permission prompting¶

Added in version 24.10.

Prompting is also supported by an additional seeded snap, prompting-client, for permissions prompt handling.

Better power optimization¶

Added in version 24.10.

Power Profiles Manager has been improved and optimized to support better newer hardware features (especially AMD), can now support multiple optimization drivers and is now battery-aware to automatically increase the optimization levels when running on battery only.

Performance improvements in Windows games¶

Added in version 25.04.

A new NTSYNC driver that emulates WinNT sync primitives is available, delivering better performance potential for Windows games running on Wine and Proton (Steam Play).

New ARM64 Desktop image¶

Added in version 25.04.

There is now an official generic ARM64 Desktop ISO targeting VMs, ACPI + EFI platforms and Snapdragon based WoA devices.

Initial hardware enablement work for the Snapdragon X Elite platform is included in the Desktop ISO.

Dual boot enhancements¶

Added in version 25.04.

Improved dual boot user experience, with a focus on BitLocker protected Windows systems:

Added the option to install Ubuntu alongside existing BitLocker partitions if enough unallocated space (or a sufficiently large and resizable partition) is available
Made encrypted installations and other ‘advanced options’ available for dual boot scenarios

JPEG XL support¶

Added in version 25.04.

The JPEG XL format is now supported without needing to install any additional packages

VA-API accelerated video encoding and decoding by default¶

By default, hardware-accelerated video encoding and decoding are now provided for AMD and Intel users via the Video Acceleration API (VA-API).

Updated optional media codecs¶

Added in version 25.10.

The additional packages that you can enable during the Ubuntu installation have been updated. The updated package set now includes the non-free AAC codec for supported Bluetooth headsets.

To install these codecs, select Install third-party software for graphics and Wi-Fi hardware and additional media formats in the Ubuntu installer.

New update notifications¶

Added in version 25.10.

When system updates are available, the Software Updater window no longer pops up unprompted, stealing the keyboard focus. Instead, a notification shows up with options to open the Software Updater or to install all updates directly.

An icon in the system tray reminds you that updates are available even after dismissing the notification. It also provides a quick way to apply all the updates or inspect them in the Software Updater.

Installer accessibility¶

Added in version 25.10.

The Ubuntu installer has received plenty of accessibility fixes for screen reader users.

Ubuntu Insights¶

Added in version 25.10.

Ubuntu Insights is being developed as a replacement for Ubuntu Report and gives you more control over the non-personally identifying system metrics that you choose to share with Canonical. The metrics collection is opt-in.

Note

Any consent that you previously granted to Ubuntu Report will not be carried over to Ubuntu Insights.

`PreLogin` and `PostSession` scripts have been removed¶

Removed in version 26.04.

PreLogin and PostSession scripts have been removed from GNOME as part of the X11 code cleanup. These scripts are used in corporate environments, for example to synchronize the user’s home directory on login to a server and logout from a server, or to clean up sensitive data after logout.

To work around the issue, you can reimplement the behavior of the removed scripts using PAM session modules. For example, the actions that you were invoking from the GDM PreLogin, PostLogin, PreSession or PostSession scripts can be invoked from the pam_exec(8) module instead.

For details, see the Ubuntu bug and the upstream issue.

Server¶

OpenSSH¶

The upgrade from Ubuntu 24.04 LTS, which had OpenSSH 1:9.6p1, to OpenSSH 1:10.2p1 includes major changes. Note the following:

Deprecation warning for SHA1 SSHFP DNS records
Add a warning when the connection negotiates a non-post quantum key agreement algorithm.
Removes support for the weak DSA signature algorithm.
New PerSourcePenalties option that will penalise client addresses that for some reason do not complete authentication. New in version 9.8.
Support for a new hybrid post-quantum key exchange algorithm, called “mlkem768x25519-sha256”. Described in https://datatracker.ietf.org/doc/html/draft-kampanakis-curdle-ssh-pq-ke-03, it’s available by default. New in version 9.8.
New match option invalid-user, which can be used when the target username is not valid
New sshd.service alias to ssh.service. Both names can now be used in systemctl commands.
New binary packages called openssh-client-gssapi and openssh-server-gssapi. This is in preparation for a future split of the GSSAPI authentication mechanism into separate packages in the near future. For now, they just pull in their non-gssapi counterparts, if installed. See https://lists.debian.org/debian-devel/2024/04/msg00044.html for the detailed plan.
Host DSA keys are no longer generated.
Starting with 1:9.6p1-3ubuntu17, openssh server no longer reads ~/.pam_environment of the target system upon login. See LP: #2059859 for details.

For full upstream release notes for all releases, please consult https://www.openssh.org/releasenotes.html

Chrony¶

Chrony is now used as the default time daemon replacing systemd-timesyncd for new installations.

To migrate existing systems after the upgrade to Ubuntu 26.04 LTS, use the following commands:
```
apt-mark auto systemd-timesyncd
apt install chrony
```
NTS (authenticated & encrypted NTP) by default uses Ubuntu time servers.
Ubuntu’s NTP servers are defined in a new snippet in /etc/chrony/sources.d/ubuntu-ntp-pools.sources.

If you edited /etc/chrony/chrony.conf, ensure that the servers defined in /etc/chrony/sources.d/ubuntu-ntp-pools.sources are not used twice.
Specific release notes since Chrony version 4.5, which was found in Ubuntu 24.04 LTS, are at https://chrony-project.org/news.html#_27_aug_2025_chrony_4_8_released.

ClamAV¶

Updated to 1.4.3 with many new features

Scanning attachments found in Microsoft OneNote section files
Extracting Universal Disk Format (UDF) partitions
Extracting embedded images in HTML CSS <style> blocks
Extracting alz and lha/lzh archives
Toggle for image fuzzy hashing
Improvements for VBA extraction in office documents
Custom clean file cache size with --cache-size (uses more RAM)
A systemd.timer unit for running freshclam
Better limit handling for large files
Client certificates for authentication to a private Freshclam mirror
Virus database minimal age

For complete details of all changes leading up to 1.4.3, please see the upstream release notes at https://blog.clamav.net/.

Django¶

Added in version 25.10.

Django has been updated to the latest LTS release 5.2 from 4.2, which includes many new features and bug fixes. All Django middleware provided in Ubuntu has also been updated to be compatible with the new version. See the 5.0 release notes for features and updates added with the major version change and the 5.2 release notes for the changes made leading up to the LTS release.

PHP¶

PHP was updated to version 8.5. Among other enhancements and bugfixes, the highlighted changes since Ubuntu Noble 24.04 are:

Property hooks
Asymmetric visibility
Updated DOM API
A new URI Extension
The Pipe Operator
Clone With functionality
The #[\NoDiscard] Attribute
Closures and First-Class Callables in Constant Expressions
Persistent cURL Share Handles
array_first() and array_last() functions

For more details, breaking changes and other features, see the upstream release notes:

Dovecot¶

Updated to 2.4.2. Version 2.4 introduced many changes to the Dovecot configuration format!

Coming from Ubuntu 24.04 LTS, please follow dovecot’s 2.3 upgrade documentation.

When you’re coming from other versions, follow the upgrade overview.

Postfix¶

Specific release notes for major version releases since Ubuntu 24.04 LTS (Noble Numbat) are:

A noteworthy change in the packaging of Postfix is that by default it is no longer installed in a chroot, and only limited chroot support is available from now on.

RabbitMQ¶

RabbitMQ is not directly upgradable due to feature flags. To mitigate this, some manual steps are needed. For more information please read https://discourse.ubuntu.com/t/ubuntu-server-gazette-issue-12-upgrading-rabbitmq-across-ubuntu-releases/77271.

Samba¶

Samba has been updated to the new upstream 4.23 version. Changes since Ubuntu Noble 24.04:

SMB3 Unix Extensions enabled by default
NetBios is disabled by default in the configuration file /etc/samba/smb.conf for fresh installs
SMB3 Directory Leases
Netlogon Ping over LDAP and LDAPS
Experimental Himmelblaud Authentication in Samba
AD DC schema upgrade and provision performance improvements
LDAP TLS/SASL channel binding support
Group Managed Service Accounts
Samba can now claim Functional Level 2012R2 support
Some Samba public libraries made private by default
Samba AD will rotate expired passwords on smartcard-required accounts
Automatic keytab update after machine password change

Removed features:

nmbd proxy logon
cldap port
fruit:posix_rename

Packaging changes when upgrading from Ubuntu Noble 24.04:

samba-vfs-modules: the VFS modules from this package were moved to the samba package, with the exception of the Ceph module, which got its own package: samba-vfs-ceph. The samba-vfs-modules package is now just a transitional package, and it can be safely removed after the release upgrade.
samba-vfs-modules-extra: this package used to contain the GlusterFS VFS module. This module was moved to a new package called samba-vfs-glusterfs, and samba-vfs-modules-extra became a transitional package. It can also be safely removed after the release upgrade.
The dumpmscat binary is no longer built

Samba upstream release notes since Ubuntu 24.04 LTS (Noble Numbat):

Samba on i386¶

Samba version 4.21.x added a dependency to the python3-samba package: python3-cryptography. Unfortunately, python3-cryptography was last built for i386 for Ubuntu Bionic 18.04, and is no longer available for that architecture, making this new dependency unsatisfiable.

For Ubuntu Plucky 25.04 and later, the python3-samba package is no longer built for i386. Please see LP: #2099895 for details. The main consequence is that the samba-tool script (part of that package) is no longer available for i386.

Upgrading an AD/DC from previous Ubuntu releases¶

If you have deployed a Samba Active Directory Domain Controller without having installed the samba-ad-dc package, you should install it before doing a release upgrade to Ubuntu 26.04 LTS (Resolute Raccoon). If samba-ad-dc is not installed prior to the release upgrade, the Active Directory Domain Controller functionality will not work on the upgraded system due to many missing components.

See LP: #2101838 for more information

Squid¶

Squid was updated to upstream version 7.2. Coming from version 6, the main new options are:

Add tls_key_log directive to log TLS master keys.
Add key-extras format to external ACL helpers to pass transaction details.
Add doh_query directive to send DNS queries over HTTPS.
Add cache_peer option tls-client-cert-switch to select client certificates dynamically.

Several bugfixes for crash scenarios are also included in this major release.

Some directives and options were removed in Squid 7.2:

Removed client_delay_access directive.
Removed ftp_epsv directive.
Removed cache_peer option no-netdb-exchange.
Removed client_persistent_connections and server_persistent_connections directives.

For a list of all changes and fixes, please check the upstream releases page.

SSSD¶

SSSD has been updated to version 2.12.

SSSD now runs under user sssd (instead of root). Make sure that sssd can still access secrets or integrations from its new user.

The implicit files provider and domain was removed: see https://sssd.io/docs/files-provider-deprecation.html.

strace¶

strace now supports colored output (configurable with --color=..., STRACE_COLORS=... and NO_COLOR=1).

Sample colored output

HAProxy¶

Changed in version 26.04.

HAProxy was updated to the latest upstream LTS release, 3.2, which introduces performance and efficiency improvements, faster and more reliable QUIC protocol support, and more. For further details on this new release, please check the HAProxy 3.2 upstream announcement.

For users coming from HAProxy 2, breaking changes include detection of accidental multiple commands sent to the Runtime API, rejecting the enabled keyword for dynamic servers, stricter parsing of non-standard URIs and renaming of tune.ssl.ocsp-update to tune.ocsp-update.

You can learn more at Announcing HAProxy 3.0. A complete list of changes is available in the upstream changelog.

DocumentDB¶

Added in version 26.04.

DocumentDB is now available in Ubuntu, starting with version 0.108-0. It is a powerful, scalable, MongoDB compatible open-source document database built for modern applications, built on PostgreSQL. For more information see documentdb.io.

MySQL¶

Added in version 25.04.

MySQL was updated from 8.0 to 8.4 LTS, starting with 8.4.8 in Ubuntu 26.04 LTS. This is MySQL’s first official long term support release, including various internal improvements, new features, and some important configuration changes.

Upstream release notes are available in the Mysql 8.4 documentation library. For more information about the transition from MySQL 8.0 to 8.4, see the MySQL 8.4 overview.

Due to upstream policy, support for 32-bit MySQL Server has been removed. However, Ubuntu will continue to provide a MySQL client and client library for 8.4 on armhf and i386.

MySQL Shell¶

Added in version 25.04.

MySQL Shell was updated from major version 8.0 to 8.4 to coincide with MySQL 8.4. It adds support for MySQL 8.4 servers, and provides additional improvements for interacting with MySQL 8.0 servers. For a list of features, see the MySQL Shell 8.4 documentation. Release notes for MySQL Shell 8.4 can be found here.

PostgreSQL¶

Added in version 26.04.

PostgreSQL was updated to version 18. This new version improves performance for workloads of all sizes through a new I/O subsystem that has demonstrated up to 3× performance improvements when reading from storage, and also increases the number of queries that can use indexes. This release makes major-version upgrades less disruptive, accelerating upgrade times and reducing the time required to reach expected performance after an upgrade completes. Developers also benefit from PostgreSQL 18 features, including virtual generated columns that compute values at query time, and the database-friendly uuidv7() function that provides better indexing and read performance for UUIDs. PostgreSQL 18 makes it easier to integrate with single-sign on (SSO) systems with support for OAuth 2.0 authentication.

For further information, check the upstream release announcement and the upstream release notes.

Valkey¶

Added in version 26.04.

Valkey was updated to version 9.0, starting with 9.0.3. This includes various features and improvements beyond 8.x, such as atomic slot migrations and hash field expiration.

For more information on the new version, see the Valkey 9 blog post. Release notes are available on the Valkey project GitHub.

Container stacks¶

Added in version 25.10.

For the containerd and runc packages, we established a pattern to either keep the regular updates to the latest version or to opt for slower, more stable updates throughout the time the release is active. For more please read Ubuntu Server Gazette - Issue 8 - Containers: Steady paths for agile stacks.

Virtualization stack¶

A stack as active as that of qemu, libvirt, edk2, and seabios had too many great new features and fixes to list them all. The upgrades between each interim release like libvirt@24.10, qemu@25.10, or edk2@25.10 are already so huge they can only cover a selected high-level summary. Each version adds various new emulated instructions, new CPU types and virtualized platforms, which would be beyond the scope of release notes. Here are just a few to motivate you to check out all the other per-release changes and the related upstream announcements.

Added in version 26.04.

libvirt: Better firmware selection
libvirt More statistics for block devices on QEMU domains
libvirt: Support for NUMA affinity of PCI devices
libvirt+qemu: Support for NVIDIA Multi-Instance GPU (MIG) configurations
qemu: Hyper-V host model mode
qemu: The HPET device does not take the big QEMU lock anymore
qemu: Support for loading multiple x509 cert+key identities (for transition to post-quantum cryptography)

Added in version 26.04.

The Ubuntu 26.04 LTS (Resolute) release introduces a new Hardware Enablement (HWE) virtualization stack, which will be continuously updated to align with the latest versions delivered in upcoming interim releases.

This virtualization stack is delivered like the HWE kernel. Using them together is recommended but not a strict requirement.

This allows the user to benefit from the latest capabilities of the virtualization stack while otherwise staying on the well established Ubuntu LTS.

This virt-hwe stack is composed of the following source packages:

qemu-hwe
libvirt-hwe
seabios-hwe
edk2-hwe

Initially those are mostly identical to the base packages, but twice a year they will move to a newer release and become stable once they match the following Ubuntu LTS release. They generally resolve the same dependencies as the base stack and are therefore interchangeable but mutually exclusive to each other.

The tool ubuntu_virt_helper assists administrators in switching between the two stacks.

Added in version 25.10.

libvirt: ppc64 POWER11 processor support
libvirt: Control over QEMU TLS priority strings
libvirt: Support for NVMe disks
libvirt: Support for AMD IOMMU device
libvirt+qemu+edk2: Support for Intel TDX
qemu: Support for the RVA23 Profile
qemu: Support for s390x generation 17 mainframe CPUs
qemu: Support for true virtio-scsi multiqueue

Added in version 25.04.

libvirt: Zero block detection for non-shared-storage migration
libvirt: Support for versioned qemu CPU models
libvirt+qemu+edk2: Support for AMD SEV-SNP
qemu: Support for RISC-V privilege 1.13 spec
qemu: Support for MTE on ARM KVM-based VMs

Added in version 24.10.

qemu: virtio-blk device has gained true multiqueue support where different queues of a single disk can be processed by different I/O threads. This can improve scalability in cases where the guest submitted enough I/O to saturate the host CPU running a single I/O thread processing the virtio-blk requests. Multiple I/O threads can be configured using the new iothread-vq-mapping property.
qemu: Support for emulating various new RISC-V instructions like the Zacas, Zaamo, Zalrsc, and Ztso extensions
libvirt: Support for clusters in CPU topology.
libvirt: New dynamicMemslots attribute for virtio-mem

High availability and clustering¶

The kpartx-boot package has been discontinued to align with Debian. Originally introduced to support dmraid booting, its functionality is preserved, as the kpartx package now includes everything previously provided by kpartx-boot.

Removed in version 24.10.
The dmraid package has been removed. The rationale for its removal is outlined in bug LP#2073677, primarily due to its removal from Debian unstable and minimal upstream support. If you require this functionality, consider using alternatives like mdadm.

Removed in version 24.10.
Pacemaker was updated to version 3. All new features and breaking changes are described in the upstream release notes.

Installer¶

The Subiquity installer has been updated. See the Subiquity release notes on GitHub:

WSL¶

Ubuntu Insights¶

Ubuntu Insights is introduced as a successor to Ubuntu Report, providing enhanced user control over the submission of non-personally identifying system metrics to Canonical. This opt-in metrics collection is now integrated into Ubuntu on WSL.

Users initializing a WSL instance for the first time will be prompted for system metrics collection consent. This consent is persisted on the Windows host, eliminating repeated prompts for subsequent WSL instance setups. Consent management is also available on an individual per-instance basis.

For additional information on data collection for Ubuntu on WSL, refer to the documentation.

Chrony¶

Changed in version 25.10.

Ubuntu on WSL follows the platform-wide migration from systemd-timesyncd to chrony for network time synchronization that was implemented during the 25.10 cycle. Further details on this change in the WSL context are provided in the documentation on time synchronization within WSL.

systemd-binfmt.service¶

Changed in version 25.10.

Binfmt miscellaneous registrations are integral to Windows binary interoperability within WSL. Previously, the systemd-binfmt.service unit was disabled to mitigate against various potential issues. As of WSL 2.5.7, this system override is no longer necessary because the platform now incorporates a robust fix utilizing systemd generators.

Users relying on systemd-binfmt.service to apply new registrations when installing packages, for example, will now find it works without compromising the binary interoperability. To learn more, please check out our docs about binfmt.

User setup¶

Changed in version 25.10.

Enhancements were implemented for Windows username processing during the initial WSL instance setup:

Addressed an issue that resulted in the erroneous removal of uppercase letters from the Windows username before generating the suggested Linux username. See LP: #2122047.
Resolved failures occurring when the Windows username included non-ASCII characters. See LP: #2118617.

Ubuntu Pro for WSL version 1.0 released¶

Ubuntu Pro for WSL is a dedicated Windows application that streamlines the management of Ubuntu Pro subscriptions across WSL instances.

For individual users, it eliminates the necessity of manually attaching each new Ubuntu instance to Ubuntu Pro for access to security benefits. For enterprise deployments, the application provides automated Pro-attachment and registration with Landscape, facilitating large-scale device fleet management.

Documentation and download resources are available in the documentation and the download page.

Development¶

GCC 🐄 has been updated from version 14 to 15.2, binutils from 2.42 to 2.46, and glibc from 2.39 to 2.43.
Python 🐍 has been updated from version 3.12 to 3.14.
LLVM 🐉 has been updated from version 18 to 21.
Rust 🦀 has been updated from version 1.75 to 1.93, while 1.91 and 1.92 are also available.
Golang 🐀 has been updated from version 1.22 to 1.25.
Zig ⚡ is now available in Ubuntu. It defaults to version 0.14.1.
OpenJDK has been updated from version 21 to 25, while LTS versions 8, 11, 17, 21 are also available. OpenJDK 26, and OpenJDK 27 previews are also included.
Ubuntu Toolchains has a new homepage.

OpenJDK 25 and TCK certification¶

Added in version 25.10.

OpenJDK 25 package is available and is TCK (Technology Compatibility Kit) certified on AMD64, ARM64, S390X, PPC64EL. The Java TCK is the most comprehensive test suite that covers all aspects of Java SE specification including language features, libraries and APIs. This guarantees interoperability and conformance to standard. OpenJDK 21 and 17 are also TCK certified.

OpenJDK CRaC¶

OpenJDK CRaC (Co-ordinated Restore at Checkpoint) packages for versions 25, 21, and 17 are available on AMD64.

Spring® snaps¶

Added in version 25.04.

We are excited to announce the devpack-for-spring snap and a set of Spring® content snaps that will serve as development tools for Spring® projects.

Developers can now quickly build Ubuntu ROCK images for their Java applications using the Gradle and Maven plugins for Rockcraft.

GraalVM snap¶

Added in version 25.04.

GraalVM Community Edition for JDK versions 21, 24 and 25 is now available as a snap. Java developers now have a choice to build and deploy their applications with standard OpenJDK, with OpenJDK CRaC or as a GraalVM native image.

.NET 10¶

.NET 10 is now available in the Ubuntu archive for the amd64, arm64, s390x, and ppc64el architectures.

.NET snap¶

Added in version 24.10.

We are excited to introduce the new and improved .NET Snap, allowing developers to seamlessly install any supported version of .NET on any Ubuntu system.

PowerShell snap on more architectures¶

Added in version 25.10.

Support for the PowerShell snap has been expanded to include the arm64, s390x, and ppc64el architectures, broadening its availability across platforms.

Enterprise¶

authd¶

authd, Ubuntu’s cloud authentication solution, is now available from an official Ubuntu repository and has a range of new features. Changes since 24.04 are detailed below:

authd can be installed directly from the Ubuntu archive (universe). For more information read the blog
The new Google broker supports authentication through Google IAM
Device registration is supported when authenticating with Microsoft Entra ID
authctl is provided as a command line tool for managing authd
A generic OpenID Connect (OIDC) broker for authd is available. For more information read the blog
Device ownership support lets you automatically assign a device owner and restrict login access
A new setting allows you to enforce an access check with the identity provider during login
New pages on security, deployment, and authctl were added to the docs

ADSys¶

The Active Directory Group Policy client for Ubuntu has been updated since 24.04 to:

Fix invalid headers for newer polkit versions
Allow searching GPO list by userPrincipalName
Include a new tutorial and glossary

Cloud¶

On all cloud providers, AMD64 based images are now built with AMD64v3 by default. This effort begins with 26.04 Resolute Racoon images and will continue with future releases.

Google Cloud¶

All Resolute 26.04 images are now built with AMD64v3 by default. However, this means that the following CPU platforms available on N1 machine types are no longer supported:

Intel Ivy Bridge
Intel Sandy Bridge

Automatic in-place upgrades to Ubuntu Pro will be fixed in ubuntu-pro-client (to be included in the next point release)

Amazon Web Services (AWS)¶

This transition impacts several Previous Generation Instance families. While AWS maintains these for legacy optimizations, they do not meet the microarchitecture requirements for Resolute Raccoon.

The following instance families are no longer supported starting with version 26.04:

General Purpose: M1, M2, M3, M4
Compute Optimized: C1, C3, C4
Memory Optimized: R3, R4
Storage/Accelerated: I2, G3, P2, P3, P3dn

Learn more about the AWS Previous Generation Instances to identify migration paths to current-generation instances

Security¶

New AppArmor sandboxing profiles¶

Added in version 25.04.

As part of a profile writing effort to improve overall system security, the AppArmor package now includes many new profiles for applications. This improved sandboxing can help mitigate the impact of any exploit in the confined applications.

TPM-backed full-disk encryption¶

You can now secure your Ubuntu Desktop installation using TPM-backed full-disk encryption (TPM/FDE).

With TPM/FDE, the encryption keys for your disk are automatically generated and stored safely in your computer’s Trusted Platform Module (TPM). Your disk unlocks automatically at boot when the TPM verifies that your system hasn’t been tampered with. Optionally, you can add a PIN or passphrase for an extra layer of security.

For a complete description of TPM/FDE features, refer to Hardware-backed disk encryption in the Ubuntu Desktop documentation.

You can enable TPM/FDE during the Ubuntu installation. See Encrypt your disk with TPM.

Some limitations remain: see Limitations of TPM-backed full disk encryption.

Post-quantum cryptography support¶

Added in version 25.10.

The OpenSSL library comes with several notable updates since Ubuntu 24.04:

QUIC client and server support
Support for post-quantum cryptography (PQC) algorithms (ML-KEM, ML-DSA and SLH-DSA)
Broader EVP coverage
Various performance improvements

For more information, see Post Quantum Support in the upcoming 26.04 LTS.

Intel® Trusted Domain Extensions (TDX) host support¶

Added in version 25.10.

Intel® Trusted Domain Extensions (TDX) is a hardware-based confidential computing technology that isolates virtual machines into secure Trusted Domains (TDs). TDX protects guest workloads from the hypervisor, host OS, and other VMs by encrypting memory and enforcing strong, hardware-level isolation.

TDX is designed for cloud and virtualized environments where workload confidentiality must be preserved in shared, multi-tenant infrastructure.

Benefits for the user:

Isolated multi-tenant compute: Ensures VM memory and data remain confidential even in shared cloud environments.
Secure cloud migration: Enables customers to move sensitive workloads from on-premises environments to the cloud with confidence.
Reduced data-breach risk: Hardware-based isolation significantly limits attack surface exposure.

Supported use cases:

Confidential cloud workloads
Secure telco and enterprise virtual machines
Financial and healthcare secure workloads

Ubuntu supports Intel TDX for both host and guest operating systems. Guest support is available from Ubuntu 24.04 LTS onwards, while host support began with Ubuntu 25.10.

To learn how to use Intel TDX, see Confidential Computing with Intel Trust Domain Extensions (TDX).

cargo-auditable¶

Added in version 25.10.

Rust packages built on Launchpad now have opt-in support for cargo-auditable. If enabled, binaries will include JSON-formatted metadata in a header section of the binary expressing the dependencies used to compile the binary. If a CVE is discovered in a popular Rust crate, this dependency metadata lets users and sysadmins immediately check if a binary is compromised.

For details, see the Ubuntu project documentation.

AI/ML support¶

The NVIDIA CUDA toolkit is now available¶

Added in version 26.04.

Application developers and system administrators can now install the NVIDIA CUDA parallel computing platform from the Ubuntu Archives.

For application developers targeting Ubuntu systems, this new distribution model means they can simply declare the CUDA runtime, while Ubuntu manages its installation and compatibility across a wide range of supported NVIDIA hardware. This ensures that CUDA will be more accessible and integrated into a widely-used and trusted Linux distribution.

To install CUDA, use the following command:

sudo apt install cuda-toolkit

To learn more, see Canonical announces it will support and distribute NVIDIA CUDA in Ubuntu.

The AMD ROCm libraries are now available¶

Added in version 26.04.

The Ubuntu Universe repository now includes AMD ROCm software version 7.1.0. These libraries provide back-end infrastructure to support AI training and inference on AMD GPU hardware, as well as machine learning and high performance computing functionality.

The ROCm libraries are regularly tested in Canonical’s CI/CD processes. In addition to autopkgtests, several user-space applications are also tested including llama.cpp, pytorch, Blender and Lemonade Server.

Supported hardware

Currently only some hardware architectures are supported and integrated in Canonical’s CI/CD tests but others will be added over time:

GFX ISA	Hardware Family	CI Status
`gfx908`	Instinct™ MI-100	YES
`gfx90a`	Instinct MI-210, MI-250
`gfx942`	Instinct MI-300, MI-325
`gfx1030`	Navi21 / Radeon™ RX6900 Series, Pro V620
`gfx1100`	Navi31 / Radeon RX7900 Series
`gfx1101`	Navi32 / Radeon RX7700 Series
`gfx1151`	Strix Halo / Ryzen AI MAX 300 Series (Radeon 8040S, 8050S, 8060S)	YES
`gfx1200`	Navi48 / Radeon RX9060
`gfx1201`	Navi44 / Radeon RX 9070XT, AI PRO R9700	YES

Note that currently, AMD ROCm fails Blender tests on gfx908.

For more information on ROCm, see ROCm 7.1.0 release notes.

Hardware support¶

NVIDIA Dynamic Boost¶

Added in version 25.04.

This release enabled NVIDIA Dynamic Boost by default on supported laptops with NVIDIA GPUs.

NVIDIA Dynamic Boost is a feature of the NVIDIA drivers that dynamically shifts power between CPU and GPU depending on the workload on the system. While gaming, this allows extracting more performance by granting more power to the GPU.

Dynamic Boost will be active only when the laptop is powered by AC and there is enough load on the GPU. It will not be engaged when the system is running on battery.

For more details refer to NVIDIA’s documentation.

Support for new Intel® integrated and discrete GPUs¶

This release brings full support for the following Intel® Arc™ “Battlemage” and “Celestial” GPUs:

Integrated:
- Intel® Core™ Ultra Xe2 and Xe3
Discrete:
- Intel® Arc™ 5 B570 and B580
- Intel® Arc™ Pro B50, B60, B65, and B70

Moreover, the following features are also included:

Added in version 25.04.

Improved GPU and CPU ray tracing rendering performance in applications with Intel Embree support, such as Blender (v4.2+). Ray tracing hardware acceleration on the GPU improves frame rendering by 20-30%, due to a 2-4x speed-up for the ray tracing component.
Full hardware accelerated video encoding of AVC, JPEG, HEVC, and AV1 on “Battlemage” devices.
Introduction of the new CCS optimization in Intel® Compute Runtime.
Enable debugging support for Intel Xe GPUs.
oneAPI Level Zero Ray Tracing improves AI/ML workload speeds via Embree on SYCL

Added in version 25.10.

Via the Linux kernel version 6.17

Initial support for Intel’s next-gen client platform codenamed Panther Lake.
Enhanced IOMMU and PCIe subsystem for improved GPU virtualization and passthrough.
Improved multi-GPU configuration support for Intel hardware.

Via Mesa version 25.2.3

VK_KHR_shader_bfloat16 enabled in Intel ANV Vulkan driver for Battlemage and Panther Lake (GFX125+).
Completed OpenCL 2.0 coarse grain buffer SVM support in Iris driver.
Improved color fast-clear handling and multi-engine surface usage for Intel Vulkan (ANV) driver.

Via intel-media-driver version 25.3.0

Panther Lake Upstream decoding and VP9 encoding support.

Via intel-compute-runtime version 25.31

Enabling a Level Zero device unified shared memory (USM) pool as a performance change.
A performance-minded change for Xe2 graphics to ensure Level Zero events are always allocated in the local device memory.

Via level-zero version 1.24

Update Level Zero Loader and Headers to support v1.13.1 of L0 Spec

Via level-zero-raytracing version 1.1.0

Ray Tracing Acceleration Structure (RTAS) Extensions

Suspend with Nvidia¶

Added in version 25.10.

Suspend-resume support is now enabled in the proprietary Nvidia driver so as to prevent corruption and freezes when waking an Nvidia desktop.

ARM desktop platforms¶

Added in version 25.10.

The linux-generic kernel for ARM64 provides broader compatibility for ARM64 desktop platforms that utilize UEFI for booting (LP#2121352).

A new boot layout for Raspberry Pi¶

Added in version 25.10.

Changed in version 26.04.

A new layout of the boot partition is introduced to enhance the reliability of the boot process (LP: #2116266). This will automatically “test” new boot assets written to the boot partition before committing them as the current “known good” set. See the call for testing for more information, or the blog post covering the feature for the full details (including advice on how to opt-out of this feature, where required). The piboot-try(1) man-page may also be consulted for advanced operations.

Warning

Please note that, due to the new boot process, the boot firmware on your Pi must be up to date.

For Pi 3, 3+, CM3+, and Zero 2W: No action required, the boot firmware is in the image itself.
For Pi 4, 400, CM4: Your boot firmware must be dated no earlier than 2022-11-25.
For Pi 5, 500, CM5: Your boot firmware must be dated no earlier than 2025-02-11.

To check, run sudo rpi-eeprom-update. If your firmware is dated earlier, using Ubuntu 24.04 LTS (Noble Numbat) or later, run sudo rpi-eeprom-update -a and reboot.

Raspberry Pi is based on the minimal image¶

Changed in version 25.10.

The Ubuntu desktop images for Raspberry Pi are now based upon the desktop-minimal seed rather than desktop (LP: #2103808). This greatly reduces the default set of applications installed on the images (saving approximately 777MB of space on the uncompressed image, and thus on user’s systems).

The applications mentioned above will not be automatically removed for upgraders as the ubuntu-desktop meta-package remains manually installed in this circumstance. If you wish to remove these applications (in bulk), you may do so with:

$

sudo apt purge ubuntu-desktop --autoremove

If you wish to keep specific applications, simply “install” them with apt first. This marks them as “manually installed”, excluding them from automatic removal.

Swap is created with `cloud-init` on Raspberry Pi¶

Changed in version 25.10.

The creation of the swap file on the desktop images is now handled by cloud-init (LP: #2116275). You may customize the size of the swap file by editing user-data on the boot partition prior to first boot (commented examples are included in the image).

New RISC-V requirements¶

Changed in version 25.10.

The RISC-V version of Ubuntu 26.04 LTS only supports hardware that implements the RVA23S64 ISA profile. You can’t run Ubuntu 26.04 LTS on systems that don’t satisfy this requirement. Ubuntu 24.04 LTS continues to support boards with the earlier RVA20 processor cores.

As of April 2026, no RVA23S64 hardware is available yet. The only supported RISC-V platform is the QEMU virtualization with the -cpu rva23s64 CPU profile.

IBM Z requirements raised to z15¶

Changed in version 26.04.

On the IBM Z (s390x) architecture, Ubuntu 26.04 LTS now requires the z15 architectural level at minimum. As a result, you can’t install Ubuntu 26.04 LTS on IBM Z generation z14 (LinuxONE II) or older.

The performance on IBM Z generation z15 (LinuxONE III) and newer has improved.

For more information, refer to the following release notes:

Common changes¶

`sudo-rs`¶

Added in version 25.10.

The sudo-rs tool is now the default sudo provider.

The sudo tool (the original sudo maintained by Todd C. Miller) has been renamed to sudo.ws. Additionally, the sudo-ldap package has been removed: please switch to using LDAP authentication via PAM.

See Ubuntu Server Docs for configuring your default sudo provider and for the differences between sudo-rs and sudo.ws.

`rust-coreutils`¶

Added in version 25.10.

The core utilities of the operating system are now provided by the rust-coreutils package. Among other things, this brings significant performance improvements, such as in the base64 tool.

Because rust-coreutils are not fully compatible yet, we continue to provide the classic GNU utilities as well. These are accessed by running gnu prefixed to the desired command. For example:

gnuls

Alternatively, you can switch between the two sets of utilities by running the following commands:

To switch to GNU coreutils:

sudo apt install coreutils-from-gnu --allow-remove-essential

To switch back to rust-coreutils:

sudo apt install coreutils-from-uutils --allow-remove-essential

Because of unresolved bugs, the cp, mv, and rm utilities are still from GNU in rust-coreutils. For more information, see An update on rust-coreutils.

Architecture variants and `amd64v3`¶

Added in version 25.10.

Ubuntu now has the ability balance hardware compatibility and fuller utilization of modern hardware by building multiple versions or “variants” of a package. The first variant we are introducing is amd64v3, which is optimized for the x86-64-v3 microarchitecture level.

For maximum compatibility, this variant is opt-in by default. If you are running on compatible hardware (and if your AMD64 machine was built in the last 10 years or so, you probably are) you can upgrade to amd64v3 packages with the following commands:

echo 'APT::Architecture-Variants "amd64v3";' | sudo tee /etc/apt/apt.conf.d/99enable-amd64v3
sudo apt update
sudo apt upgrade

For details, see the announcement: Introducing architecture variants: amd64v3 now available in Ubuntu 25.10.

Linux kernel 7.0¶

For users running the GA generic stack, the Linux kernel has been updated from version 6.8 to 7.0. For users running the Hardware Enablement (HWE) stack, the Linux kernel has been updated from version 6.17 (25.10 backport) to 7.0.

Crash dumps are now enabled by default for desktop and server installations.

Added in version 24.10.
Kernel developers can now make use of a new scheduling system, sched_ext, which provides a mechanism to implement scheduling policies as eBPF programs. This enables developers to defer scheduling decisions to standard user-space programs and implement fully functional hot-swappable Linux schedulers, using any language, tool, library, or resource accessible in user-space.

Added in version 25.04.
After the generic kernel gained the ability to tune responsiveness at boot time, the linux-lowlatency binary package has been retired in favor of a combination of linux-generic and a new user-space lowlatency-kernel package, responsible of tuning the GRUB command line.

Added in version 25.04.
The RISC-V kernel supports only architectures compliant with the RVA23S64 ISA profile.

For details, see New RISC-V requirements.

Changed in version 25.10.
linux-generic for arm64 provides via stubble broader compatibility for arm64 desktop platforms that utilize UEFI for booting (LP: #2121352).

Added in version 25.10.
Upstream Linux kernel 7.0 delivers improved support for Intel® Core™ Ultra Series 3 processors (codenamed Panther Lake), introducing targeted optimizations for Intel Xe3 integrated graphics and the integrated NPU (Neural Processing Unit).

Added in version 26.04.
Integrated IgH EtherCAT module and Generic driver (LP: #2138621). These modules provide real-time performance for industrial EtherCAT networks.

Added in version 26.04.
The real-time linux kernel is available in the main archive (outside of Ubuntu Pro) in 26.04. Following the PREEMPT_RT patches being upstreamed, the 26.04 release of the real-time kernel is available for free for anyone to use.

Added in version 26.04.
Kernel Livepatch now supports the ARM64 architecture.

Added in version 26.04.
DOCA-OFED 26.01 kernel modules are available for the Ubuntu generic and select derivative kernels.

Added in version 26.04.

`systemd` 259¶

The systemd service manager has been updated from version 255 to 259.

Ubuntu 26.04 LTS is the last release that supports System V service scripts compatibility in systemd. Migrate your legacy System V scripts to native systemd unit files.
Support for cgroup version 1 (legacy and hybrid hierarchies) has been removed. For details, see cgroup v1 support has been removed.

Removed in version 26.04.
Ubuntu now comes with the upstream tmp.mount unit by default. As a result, the /tmp directory is now a tmpfs file system by default.

Changed in version 24.10.

Netplan 1.2¶

The Netplan network manager has been updated from version 1.0 to 1.2.

Netplan introduces a custom systemd-networkd-wait-online logic, waiting for link-local addresses and one routable interface, as described in the specification.

Added in version 24.10.
Besides improvements to the embedded-switch-mode setting for SR-IOV devices, Netplan introduces a parser flag to skip broken configurations and fixes for ProtonVPN and Microsoft Azure Linux.

Added in version 24.10.
Adding support for wpa-psk-sha256 WiFis and allowing to configure routing-policy on the NetworkManager backend (LP: #2086544).

Added in version 25.04.
Adds support non-standard OVS setups, e.g. inside snap environments.

Added in version 25.10.

Package Management: APT 3¶

APT has been updated from version 2.7 to 3.1.

The new dependency solver is now automatically used if the classic solver cannot find a solution to either find a solution or add more context to the failure, and in other cases to evaluate its performance.

APT has switched from GnuTLS and gcrypt to the OpenSSL library for TLS connections and file hashing, which should improve compatibility and reduces the footprint of minimal installations.

An automatic pager has been added to apt(8) for commands such as show and list, similar to git log and journalctl.

The apt-key command has been removed. Signature verification now makes direct use of gpgv. Some packages and system administration scripts may need adjustment for managing keys directly, advice can be found in the apt-secure(8) manual page.

History management in APT¶

Added in version 25.10.

APT now provides an interface for viewing and manipulating its command history.

List changes:

$ apt history-list
ID   Command line             Date and Time          Action    Changes

0    install cowsay           2026-04-23  17:00:00   Install   1
1    upgrade                  2026-04-23  18:15:00   Upgrade   25
2    build-dep .              2026-04-24  18:30:00   Install   4

Inspect changes:

$ apt history-info 0
Transaction ID: 0
Start time: 2026-04-23  17:00:00
End time: 2026-04-23  17:00:05
Requested by: raccoon (1000)
Command line: apt install cowsay
Packages changed:
    Install cowsay:amd64 (3.03+dfsg2-8build1)

Undo changes:

$ sudo apt history-undo 0
REMOVING:
cowsay

Summary:
Upgrading: 0, Installing: 0, Removing: 1, Not Upgrading: 0
Freed space: 89.1 kB

Continue? [Y/n]

Redo changes:

$ sudo apt history-redo 0
cowsay is already the newest version (3.03+dfsg2-8build1).
Summary:
Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0

Rollback to a specific change:

$ sudo apt history-rollback 1
REMOVING:
libtext-unidecode-perl  tex-common  texinfo  texinfo-lib

Summary:
Upgrading: 0, Installing: 0, Removing: 4, Not Upgrading: 0
Freed space: 8119 kB

Dracut¶

Changed in version 25.10.

Ubuntu now uses Dracut as its default initial ramdisk infrastructure, replacing initramfs-tools. Dracut uses systemd in the initial ramdisk and supports new features like Bluetooth and NVM Express over Fabrics (NVMe-oF).

The original initramfs-tools remains supported and you can switch between the two implementations if required.

For details about the switch, see the specification.

More details¶

You can find the Known issues in this release on a separate page.

For a complete list of changes in Ubuntu 26.04 LTS, refer to the following documents, depending on the Ubuntu release that you’re upgrading from:

Ubuntu 26.04 LTS summary¶

Desktop¶

Updated applications¶

GNOME 50¶

Added a GNOME Shell search provider for snap applications¶

Added a GNOME Shell search provider for web search¶

Accessibility improvements and fixes¶

Yaru theme updates¶

Improved integration with snap applications¶

New document viewer¶

New image viewer¶

New terminal emulator¶

New system monitor¶

New default video player¶

New video and audio thumbnailers¶

Tracker Miners updated to LocalSearch¶

Wayland session¶

Software & Updates app¶

App Center enhancements¶

Security Center¶

Permission prompting¶

Better power optimization¶

Performance improvements in Windows games¶

New ARM64 Desktop image¶

Dual boot enhancements¶

JPEG XL support¶

VA-API accelerated video encoding and decoding by default¶

Updated optional media codecs¶

New update notifications¶

Installer accessibility¶

Ubuntu Insights¶

PreLogin and PostSession scripts have been removed¶

Server¶

OpenSSH¶

Chrony¶

ClamAV¶

Django¶

PHP¶

Dovecot¶

Postfix¶

RabbitMQ¶

Samba¶

Samba on i386¶

Upgrading an AD/DC from previous Ubuntu releases¶

Squid¶

SSSD¶

strace¶

HAProxy¶

DocumentDB¶

MySQL¶

MySQL Shell¶

PostgreSQL¶

Valkey¶

Container stacks¶

Virtualization stack¶

High availability and clustering¶

Installer¶

WSL¶

Ubuntu Insights¶

Chrony¶

systemd-binfmt.service¶

User setup¶

Ubuntu Pro for WSL version 1.0 released¶

Development¶

OpenJDK 25 and TCK certification¶

OpenJDK CRaC¶

Spring® snaps¶

GraalVM snap¶

.NET 10¶

.NET snap¶

PowerShell snap on more architectures¶

Enterprise¶

authd¶

ADSys¶

Cloud¶

Google Cloud¶

Amazon Web Services (AWS)¶

Security¶

New AppArmor sandboxing profiles¶

TPM-backed full-disk encryption¶

`PreLogin` and `PostSession` scripts have been removed¶

Swap is created with `cloud-init` on Raspberry Pi¶

`sudo-rs`¶

`rust-coreutils`¶

Architecture variants and `amd64v3`¶

`systemd` 259¶