The Neptune Team whishes all users a merry christmas. 

As a present we offer you today a great new desktop that you might want to try out. 
Plasma 5.5 for Neptune 4.4 is available for testing. We prepared four new software repositories for it.  

Important: This is a test version. We recommend all users who are happy with their Plasma 4 desktop to stay on it as the Plasma 5 upgrade will remove Plasma 4 and will not import any settings from it. 

1. Please prepare a Backup of your existing system. If you installed on Btrfs you can create a Backup with

sudo btrfs-snapshot plasma4

This will create a bootable snapshot that allows you later on also to switch between Plasma 4 and 5 Installations. 

2. Adding of software repositories manually. You need the following repositories for Plasma 5.5 . 

deb http://proindi.de/zevenos/neptune/repo-nm/ sid main
deb http://proindi.de/zevenos/neptune/repo-qt5/ sid main
deb http://proindi.de/zevenos/neptune/repo-kf5/ sid main
deb http://proindi.de/zevenos/neptune/repo-plasma5/ sid main

3. Installing of Plasma 5.5. 

Warning: Don't perform updates with the update manager apper as it might lead to a broken system. Use following commands instead.

sudo apt-get install kde-l10n-de
sudo apt-get upgrade
sudo apt-get install -f
sudo dpkg --configure -a
sudo apt-get install baloo bluedevil kde-config-gtk-style kde-style-oxygen kde-window-manager khelpcenter4 kinfocenter kmenuedit kscreen ksshaskpass ksysguard ksysguardd libpoppler-glib8 libpoppler-qt4-4 libproxy-tools libpython2.7 libqca2 libqca2-plugin-gnupg libqca2-plugin-ossl network-manager plasma-dataengines-addons plasma-desktop plasma-runners-addons plasma-widgets-addons polkit-kde-1 poppler-utils python python-minimal python2.7 python2.7-minimal systemsettings plasma-nm kdeplasma-addons pulseaudio

4. After the successful installation Plasma 4 won't be able to execute logout, reboot or shutdown anymore. To restart the login manager switch and login to a  TTY (e.g. Ctrl+Alt+F1) and execute

sudo systemctl restart kdm

 

Plasma 5 should be now the default session and start after login. 

 

Warnung: Packages on hold should not forced to be installed as they might break the system.

Known Problems: Mounting external devices works only through the green arrow in device watcher. A normal click will only lead to an error message.