ReleaseNotes

Differences between revisions 2 and 3
⇤ ← Revision 2 as of 2020-03-27 18:06:10 →
Size: 3104
Editor: sil2100
Comment: Add mention of Beta
← Revision 3 as of 2020-03-30 17:21:17 → ⇥
Size: 3767
Editor: fheimes
Comment:
Deletions are marked like this. Additions are marked like this.
Line 50: Line 50:
=== s390x ===

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

 * Todo

Performance tests showed (Bug: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:<<BR>>
{{{ethtool --set-priv-flags <ifname> rx_striding_rq on}}}<<BR>>
For the reason of persistence one may also create a service or udev-rule that sets this at boot time.

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

Updated Packages

Security Improvements

Network configuration

Other base system changes since 18.04 LTS

Ubuntu Desktop

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)