I am using a T520 laptop. I am trying to find the option to disable the WLAN adapter when connecting an Ethernet cable. On my previous non Lenovo machine I had to enable this feature in the WLAN adapter settings, but I can't find such setting in the T520 WLAN adapter settings. Does anyone know how to activate this setting? Is there a driver I can use that enables this setting?
To do that you need Access Connections. You can create a profile that will deactivate the WLAN radio when you connect to Ethernet.
Please refer to the following guide.