【Linux】Ubuntu22.04 USB-RTL8821cu 无线设备断网

1.查看无线网设备

nmcli device

2.连接无线网

nmcli connection add type wifi con-name "连接名" ifname wlx646e97100940 ssid "WiFi名"
nmcli connection modify "连接名" wifi-sec.key-mgmt wpa-psk
nmcli connection modify "连接名" wifi-sec.psk "WiFi密码"

3.启动连接

nmcli connection up "连接名"

4.删除时候用

nmcli connection down "连接名"
nmcli connection delete "连接名"

5.关闭省电模式

sudo iw dev wlx646e97100940 set power_save off
sudo iw dev wlx646e97100d49 set power_save off

6.修改配置文件WIFI省电模式
vi /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

[connection]
wifi.powersave = 2

7.创建文件
vi /etc/modprobe.d/usb-nosuspend.conf

options usbcore autosuspend=-1

vi /etc/udev/rules.d/85-usb-power.rules

ACTION=="add", SUBSYSTEM=="usb", TEST=="power/control", ATTR{power/control}="on"

8.创建后重载规则

sudo udevadm control --reload-rules
sudo udevadm trigger

9.重启设备

reboot



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