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guettli
Asked: 2020-09-01 00:23:01 +0800 CST

如果 LAN 已连接，请禁用 WiFi

  • 772

几天前我安装了 Ubuntu 20.04。大多数事情工作得很好。

但是如果我通过 LAN 连接，我会一次又一次地收到 WiFi 无法连接的警告。

这根本不符合逻辑。

如果我有 LAN，那么我不需要 WiFi。

当然我可以手动禁用它，但是默认的自动化就可以了。

我能做些什么来解决这个问题？

networking wireless

1 个回答

  1. Best Answer

    来自 Ubuntu 的手册页nmcli-examples https://manpages.ubuntu.com/manpages/focal/man7/nmcli-examples.7.html示例 14. 有一个脚本可以使以太网和 Wi-Fi 互斥

    #!/bin/bash
export LC_ALL=C

enable_disable_wifi ()
{
    result=$(nmcli dev | grep "ethernet" | grep -w "connected")
    if [ -n "$result" ]; then
        nmcli radio wifi off
    else
        nmcli radio wifi on
    fi
}

if [ "$2" = "up" ]; then
    enable_disable_wifi
fi

if [ "$2" = "down" ]; then
    enable_disable_wifi
fi

       This dispatcher script makes Wi-Fi mutually exclusive with wired networking. When a wired
   interface is connected, Wi-Fi will be set to airplane mode (rfkilled). When the wired
   interface is disconnected, Wi-Fi will be turned back on. Name this script e.g.
   70-wifi-wired-exclusive.sh and put it into /etc/NetworkManager/dispatcher.d/ directory.
   See NetworkManager(8) manual page for more information about NetworkManager dispatcher
   scripts.

    使新脚本可执行：chmod a+rx /etc/NetworkManager/dispatcher.d/70-wifi-wired-exclusive.sh

    • 17

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