Remove Kubuntu splash screen
After installing the KDE Desktop I realised the default Ubuntu splash screen has been changed to Kubuntu which is quite annoying.
There seems to be a common way of reverting the Ubuntu splash screen but it did not work for me. Basically there is a line of code that is used to change the splash screen but after doing so and rebooted, the same Kubuntu splash was displayed.
In the end I decided to uninstall the Kubuntu splash screen altogether which then reverts back to the Ubuntu splash screen.
sudo apt-get remove kubuntu-artwork-usplash