Step 3. Ubuntu Server Wifi - xuan103/class-2020-07 GitHub Wiki
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- 更新套件
sudo apt update -y
- 下載 wpasupplicant 套件
sudo apt install wpasupplicant
使用 wpa_supplicant 設定 Wifi 連線
sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
ap_scan=1
fast_reauth=1
country=TW
network={
ssid="輸入 Wifi 名稱"
psk="輸入 Wifi 密碼"
}
檢查無線網路卡名稱
ifconfig -a
wlx7cdd90ea4126: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 74:da:38:3b:ec:56 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlx7cdd90ea4126為無線網卡名稱
將原來讀取 wpa_supplicant.conf 的程序 wpa_supplicant 殺掉
sudo kill -9 $(ps -ef | grep wpa | awk '{print $2}')
重新執行 wpa_supplicant，並讀取 wpa_supplicant.conf 設定
sudo wpa_supplicant -B -i wlx7cdd90ea4126 -c /etc/wpa_supplicant/wpa_supplicant.conf
若回傳以下訊息，請忽略掉
rfkill: Cannot open RFKILL control device
ioctl[SIOCSIWAP]: Operation not permitted
ioctl[SIOCSIWENCODEEXT]: Invalid argument
ioctl[SIOCSIWENCODEEXT]: Invalid argument
使用設定檔測試無線網卡連線 Wifi (亂碼部分請改為無線網卡名稱)
sudo wpa_supplicant -u -s -c /etc/wpa_supplicant/wpa_supplicant.conf -i wlx7cdd90ea4126
執行 DHCP 用戶端，取得 IP
sudo dhclient
若回傳以下訊息，請忽略掉
RTNETLINK answers: File exists
查尋 IP 位址
ifconfig –a
sudo nano /etc/systemd/system/wpa_supplicant.service
[Unit]
Description=WPA supplicant
Before=network.target
After=dbus.service
Wants=network.target
IgnoreOnIsolate=true
[Service]
Type=dbus
BusName=fi.w1.wpa_supplicant1
ExecStart=/sbin/wpa_supplicant -u -s -c /etc/wpa_supplicant/wpa_supplicant.conf -i wlx7cdd90ea4126
[Install]
WantedBy=multi-user.target
Alias=dbus-fi.w1.wpa_supplicant1.service
sudo nano /etc/systemd/system/dhclient.service
[Unit]
Description= DHCP Client
Before=network.target
After=wpa_supplicant.service
[Service]
Type=simple
ExecStart=/sbin/dhclient wlx7cdd90ea4126
[Install]
WantedBy=multi-user.target
-
sudo systemctl enable dhclient.service -
sudo reboot