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

Solution 1:

Add Kubuntu Backports repo:

sudo add-apt-repository ppa:kubuntu-ppa/backports

Get key for Neon package archive:

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

Add repo:

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

Install new packages:
```
sudo apt update && sudo apt dist-upgrade
```
4a. You might encounter this problem so follow the workaround provided in the article.

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