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thebeancounter
Asked: 2020-06-02 01:15:36 +0800 CST

Disable native network card when using external

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I am using Ubuntu 20, Laptop and added external usb network card I get a weak wifi signal in my native card and better signal in the external card and see both of them as connected wifi, one with weak signal and one with strong signal.

The weak wifi is not stable, and I would like it to not hurt the stable network I get from the external card

How can I either 1.Use both and guarantee it not to hurt the network performance (mostly stability, speed is not the issue here. i get unstable network error while using Zoom) 2.Use only the external one

Hopefully a simple GUI solution.

Thanks

networking wireless drivers network-manager

1 Answers

  1. One possible way:

    lshw -c network

    Look for driver= for each NIC. If they are different you can blacklist the one you don't want (see /etc/modprobe.d/blacklist.conf).

    Otherwise you could just down the unwanted interface -- or if it is the built in one there should be an off switch on the laptop itself (one of the Fn keys?).

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