These release notes for Kubuntu 18.10 (Cosmic Cuttlefish) provide an overview of the release and document the known issues.

Support lifespan

Kubuntu 18.10 will be supported for 9 months.

Getting Kubuntu 18.10

Upgrading from 18.04

Download a Disk Image

Detailed upgrade instructions with screenshots can be found here:

Kubuntu 18.04 to 18.10 Upgrade

- Download a Bootable image. Direct downloads, torrents, and zysnc are available as options.
- The following link contains some tips to put the image onto a DVD or USB Drive

New features and changes in 18.10

Core desktop and applications

Plasma 5.13: simple by default, powerful when needed


Plasma 5.13 has been developed to make it smoother to use while retaining the familiar setup. This release of Plasma is the 1st to ship with Plasma Browser Integration. Kubuntu ships the 5th scheduled bugfix release of 5.13 (5.13.5).

Kubuntu 18.10 is built on and ships with Qt 5.11

KDE Applications 18.04.3

apps1712.png Kubuntu comes with KDE Applications 18.04 containing all your favourite apps from KDE.

Provided is the 18.04.3 update with bugfixes and translation updates. All the KDE applications on the ISO have been ported to KDE Frameworks 5 and any remaining in the archive that aren't should fit in seamlessly.

Web browser and office suite

  • Firefox 63 build1 is the default browser

  • LibreOffice 6.1.2 is provided by default in the full installation, and now uses the new hybrid KDE5/GTK3 integration for the 1st time.

Snap integration in Plasma Discover software centre

This is now enabled by default in 18.10.

Updated applications

  • KDEConnect 1.3.1 - Latest version at time of release, and is installed by default.

  • Krita 4.1.5 - Artists can enjoy the latest current version of KDE's leading digital painting application. Available in the archive.

  • Kstars 2.9.8 - Latest version (at time of final freeze) of KDE's desktop planetarium and astronomy aid. Available in the archive.

  • latte-dock 0.8.1 Available in the archive.

  • Many others.

Other highlights/notes

Plasma Wayland session - Can be installed for testing, but is not supported for 18.10

  • A Plasma Wayland session can be be made available for testing by installing the package plasma-workspace-wayland , however this is not supported. Users needing a stable desktop experience should select the normal 'Plasma' (without Wayland) option at login.

Known Problems

  • (1798562) After installing Cosmic alongside Cosmic, the resized filesystem is corrupted. It has not been reported to happen if the original operating system is something other than Cosmic.

  • (1681144) Clicking on URLs in Kubuntu Installer Slideshow does nothing

  • (1681830) Ubiquity installer - No Label shown for where to enter LVM Encryption Passwords fields

  • (1798554) OEM setup: user language selection not taken into account

Search other Bugs tagged Kubuntu 18.10

Older bugs:

  • (1442512) Apport-kde crash when reporting bugs

  • (1706859) Auto-selected keyboard layout no longer matches chosen region on "Where are you" page


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CosmicCuttlefish/ReleaseNotes/Kubuntu (last edited 2018-10-21 08:53:41 by rikmills)