disable a specific network or wifi interface conveniently

by CONTRACT SAYS IM RIGHT   Last Updated July 12, 2019 14:01 PM - source

I have a laptop with an unfortunately weak wifi card. For that reason, I recently bought a USB dongle with an external antenna.

  • I run Ubuntu LTS with the xfce desktop.
  • The internal, fixed wifi is still useful, even if it requires much greater signal strength. I want to use it only when the USB wifi is not connected.
  • The USB wifi is less convenient, so it is only used on an as-needed-basis.
  • I want to sometimes lend that laptop to non-expert users.

I am looking for a way to conveniently manage (disable/enable/connect/...) the two cards. NetworkManager does not seem to have a "completely switch this card off" feature (or I have not found it?)...

I realize that the case of having to manage two Wifi NICs is rare.

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