login screen - re-install

[cluster]

I found a double entry for the default login screen in systemsettings and removed one, but both where removed, so I installed a screen from the add login screen tab and rebooted, but now I see a black empty login screen ... only mousepointer displayed.
How can I re-install the default login screen from shell?

[Rog131]

What a mess

It seems that someone decided to use Debian alternatives ( https://wiki.debian.org/DebianAlternatives ) system to install Ubuntu sddm theme. That is:

There are:

Breeze sddm theme - This is a real theme !
Ubuntu sddm theme - This is a symlink to back to the Breeze theme !

$ update-alternatives --list sddm-ubuntu-theme
/usr/share/sddm/themes/breeze

Both are listed as Breeze in the KDE System Settings module:



With the KDE System Settings module you could remove the Breeze from the /usr/share/sddm/themes/. So the sddm-ubuntu-theme will become meaningless.:


Note that you have not removed the package: sddm-theme-breeze only the part of it.

To fix you could:

Reinstall the sddm-theme-breeze: https://packages.ubuntu.com/search?k...ic&section=all

sudo apt-get install --reinstall sddm-theme-breeze

man apt-get:

--reinstall
Re-Install packages that are already installed and at the newest version.

or

Start the Plasma desktop from the terminal (startx) and install another sddm theme from the KDE Store.