Ubuntu Server defaults to a non-rolling LTS kernel v5.15 ( linux-generic).The rolling HWE kernel is based on the v5.15 kernel for 22.04.0 and 22.04.1 point releases Ubuntu Desktop uses a rolling HWE kernel ( linux-hwe-22.04) on all other generations of hardware.Ubuntu Desktop will automatically opt-into v5.17 kernel on the latest generations of certified devices ( linux-oem-22.04).Ubuntu 22.04 LTS ships multiple optimized kernels on per-product basis: New features in 22.04 LTS Updated Packages Linux kernel Please ensure you have network connectivity to one of the official mirrors or to a locally accessible mirror and follow the instructions above. There are no offline upgrade options for Ubuntu Desktop and Ubuntu Server. Note that the server upgrade will use GNU screen and automatically re-attach in case of dropped connection problems. Launch the upgrade tool with the command sudo do-release-upgrade.Make sure the Prompt line in /etc/update-manager/release-upgrades is set to normal.Click Upgrade and follow the on-screen instructions.If not you can also use /usr/lib/ubuntu-release-upgrader/check-new-release-gtk.Update Manager should open up and tell you: 'New distribution release ‘22.04’ is available.'.Press Alt+ F2 and type in update-manager -c into the command box.Set the “Notify me of a new Ubuntu version” dropdown menu to “For any new version”.Open the “Software & Updates” Setting in System Settings.Less Frequently Downloaded Ubuntu Images.Ubuntu Desktop and Server for 64-bit x86 (AMD64).You can download ISOs and flashable images from: Images can be downloaded from a location near you. Get Ubuntu 22.04 LTS Download Ubuntu 22.04 Additional security support is available with ESM (Extended Security Maintenance).

All the remaining flavours will be supported for 3 years. Maintenance updates will be provided for 5 years until April 2027 for Ubuntu Desktop, Ubuntu Server, Ubuntu Cloud, and Ubuntu Core. For details of the changes applied since 20.04, please see the 22.04.1 change summary.

These release notes for Ubuntu 22.04 LTS (Jammy Jellyfish) provide an overview of the release and document the known issues with Ubuntu and its flavours. Jammy Jellyfish Release Notes Introduction

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