WLAN missing on freshly installed Laptop

[Volker Wysk]

Hello everybody.

I want to install Kubuntu on a friend's laptop (about seven years old), but I 
can't get WLAN to work,
although I've installed it on my own Laptop, which did work properly. 

There is no WLAN-configuration in the Kubuntu-Installer.

I can't remember the command to report this any longer, but the machine 
appears to have a WLAN controller.

On my own Laptop, there is a KDE WLAN icon, in the control bar at the bottom, 
where you can chose a WLAN hotspot. This is missing on my friend's. We also 
could not find something WLAN related in the System Settings.

In the Kubuntu installer it appears the networking configuration is skipped.

My friend's laptop is a Dell Vostro 1720. The distribution is Kubuntu 15.10.


I would be grateful for any suggestions.

Cheers
Volker