How to install KDE Plasma 5.11 on Ubuntu 16.04 (Kubuntu 16.04)?

It seems to be not possible to be done simply from repositories like highlighted in this question: How to force only newer KDE packages to be installed?

  1. Add Kubuntu Backports repo:

    sudo add-apt-repository ppa:kubuntu-ppa/backports
  2. Get key for Neon package archive:

    wget -q -O - http://archive.neon.kde.org/public.key | sudo apt-key add -
  3. Add repo:

    sudo /usr/bin/add-apt-repository -y -u 'deb http://archive.neon.kde.org/release xenial main'
  4. Install new packages:

    sudo apt update && sudo apt dist-upgrade

    4a. You might encounter this problem so follow the workaround provided in the article.

Solution inspired by this thread.

  • I guess you have tested this and it works. Could you mark this as definitive? Any ideas on Plasma 5.12? – user47206 Mar 1 '18 at 10:25

and if you want a complete, up-to-date KDE desktop: after the steps Te Ri mentioned, install the complete desktop with sudo apt install neon-desktop

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