ReleaseNotes

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 * You can upgrade to Ubuntu 20.04 LTS from either Ubuntu 18.04 LTS or Ubuntu 19.10.
 * Ensure that you have all updates installed for your current version of Ubuntu before you upgrade.
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=== Upgrading Ubuntu Desktops to 20.04 (Recommended) ===

You can easily upgrade over the network with the following procedure.
 1. Run the '''update-manager''' application;
 1. In Update Manager, click the '''Settings...''' button, and enter your password to start the Software Sources application.
 1. Select the sub menu '''Updates''' from the Software Sources application.
 1. Confirm the "Notify me of a new Ubuntu version:" option is set to "For any new version" [on 19.10] or "For long-term support versions" [on 18.04 LTS], and change it if otherwise.
 1. Close the Software Sources application and return to Update Manager.
 1. In Update Manager, click the '''Check''' button to check for new updates.
 1. If there are any updates to install, use the '''Install Updates''' button to install them, and press '''Check''' again after that is complete.
 1. A message will appear informing you of the availability of the new release.
 1. Click '''Upgrade'''.
 1. Follow the on-screen instructions.

=== Ubuntu Servers (Recommended) ===

 1. Install `update-manager-core` if it is not already installed: {{{
sudo apt-get install update-manager-core
}}}
 1. Launch the upgrade tool: {{{
do-release-upgrade -d
}}}
 1. Follow the on-screen instructions.

Introduction

These release notes for Ubuntu 20.04 LTS (Focal Fossa) provide an overview of the release and document the known issues with Ubuntu 20.04 LTS and its flavors.

Ubuntu 20.04 LTS will be released on April 23.

Ubuntu 20.04 is still in beta and is not recommended for use on production systems or on your primary computers yet.

Support lifespan

The 'main' archive of Ubuntu 20.04 LTS will be supported for 5 years until April 2025. Ubuntu 20.04 LTS will be supported for 5 years for Ubuntu Desktop, Ubuntu Server, and Ubuntu Core. All other flavors will be supported for 3 years.

Official flavor release notes

Find the links to release notes for official flavors here.


Get Ubuntu 20.04.4 LTS

Download Ubuntu 20.04 LTS

Images can be downloaded from a location near you.

You can download ISOs and flashable images from:

TODO

Upgrading from Ubuntu 18.04 LTS or 19.10

  • You can upgrade to Ubuntu 20.04 LTS from either Ubuntu 18.04 LTS or Ubuntu 19.10.
  • Ensure that you have all updates installed for your current version of Ubuntu before you upgrade.

Upgrading Ubuntu Desktops to 20.04 (Recommended)

You can easily upgrade over the network with the following procedure.

  1. Run the update-manager application;

  2. In Update Manager, click the Settings... button, and enter your password to start the Software Sources application.

  3. Select the sub menu Updates from the Software Sources application.

  4. Confirm the "Notify me of a new Ubuntu version:" option is set to "For any new version" [on 19.10] or "For long-term support versions" [on 18.04 LTS], and change it if otherwise.
  5. Close the Software Sources application and return to Update Manager.

  6. In Update Manager, click the Check button to check for new updates.

  7. If there are any updates to install, use the Install Updates button to install them, and press Check again after that is complete.

  8. A message will appear informing you of the availability of the new release.

  9. Click Upgrade.

  10. Follow the on-screen instructions.

Ubuntu Servers (Recommended)

  1. Install update-manager-core if it is not already installed: 

    sudo apt-get install update-manager-core

  2. Launch the upgrade tool: 

    do-release-upgrade -d
  3. Follow the on-screen instructions.

Updated Packages

Security Improvements

Network configuration

Other base system changes since 18.04 LTS

Ubuntu Desktop

Snap Store

The Snap Store (snap-store) replaces ubuntu-software as the default tool for finding and installing packages and snaps.

Ubuntu Server

s390x

IBM Z and LinuxONE / s390x-specific enhancements (since 19.10) include (partly not limited to s390x):

  • Todo

Performance tests showed (1868113) that it is beneficial to use 'Striding RQ' with RoCE Express 2 and 2.1 PCIe cards (ConnectX-4) on IBM z14 and LinuxONE Rockhopper II / Emperor II and newer - but this is not the default. Hence if one has RoCE 2 or 2.1 hardware plugged in to such a system, the enablement of 'Striding RQ' should be considered, like:
ethtool --set-priv-flags <ifname> rx_striding_rq on
For the reason of persistence one may also create a service or udev-rule that sets this at boot time.

Server installer

Known issues

As is to be expected, with any release, there are some significant known bugs that users may run into with this release of Ubuntu 20.04. The ones we know about at this point (and some of the workarounds), are documented here so you don't need to spend time reporting these bugs again:

Kernel

Desktop

Server

Raspberry Pi


Official flavours

The release notes for the official flavors can be found at the following links:

  • TODO


More information

Reporting bugs

Your comments, bug reports, patches and suggestions will help fix bugs and improve the quality of future releases. Please report bugs using the tools provided.

If you want to help out with bugs, the Bug Squad is always looking for help.

Participate in Ubuntu

If you would like to help shape Ubuntu, take a look at the list of ways you can participate at

More about Ubuntu

You can find out more about Ubuntu on the Ubuntu website and Ubuntu wiki.

To sign up for future Ubuntu development announcements, please subscribe to Ubuntu's development announcement list at:

FocalFossa/ReleaseNotes (last edited 2023-03-21 10:40:56 by sil2100)