How do I go back to KDE splash / login after installing XFCE?

Solution 1:

splash screen is configured by the alternatives system... you can get a list of available plymouth themes by doing: update-alternatives --list default.plymouth

You can then change the current plymouth theme by doing sudo update-alternatives --set default.plymouth /lib/plymouth/themes/kubuntu-logo/kubuntu-logo.plymouth

The alternative way of getting Kubuntu splash it to remove package xubuntu-plymouth-theme.

To change the login screen you can either run sudo dpkg-reconfigure gdm and choose kdm as mentioned in another comment or remove gdm which should set kdm as default display manager.

Solution 2:

You can just switch back the display manager to use kdm using

sudo dpkg-reconfigure gdm

and then selecting kdm.

Solution 3:

From a terminal:

sudo apt-get remove xfce4