non free drivers?
"Unfortunately by default KDE Neon doesn’t have any driver manager and you have two options to install Drivers. First, you can install all the drivers manually. In this case, you need to know what drivers you need to install. Second, you can install a driver manager which will install all the drivers automatically on your system. I recommend you install Kubuntu Driver Manager.
Open Synaptic, search for kubuntu-driver-manager and install it.
Open the Driver Manager. After the first open the driver manager will analyze your system and search for any necessary drivers."