网络管理器未列出 wifi

Question

当我使用 NetworkManager 命令工具扫描无线网络时，输出为空。

root@radxa:~# nmcli dev wifi list
SSID    BSSID   MODE    FREQ    RATE    SIGNAL  SECURITY    ACTIVE
root@radxa:~#

但如果使用iwlist，扫描就可以了：

root@radxa:~# iwlist wlan0 scan
          Cell 01 - Address: 78:A1:06:7F:CF:C9
                    ESSID:"olivia"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK 
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=7/100

设备状态：

root@radxa:~# nmcli device status
DEVICE     TYPE              STATE
wlan0      802-11-wireless   unavailable
eth0       802-3-ethernet    connected

但是如果使用 nmcli connect 是错误的：

root@radxa:~# nmcli device wifi connect "olivia" password "makeit458"
Error: No network with SSID 'olivia' found.

Linux版本：

Linux version 3.0.36+ (build@radxa-x1) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) 
#6 SMP PREEMPT Tue Aug 19 15:17:11 CST 2014

Answer 1

我终于找到了问题，wpa_supplicant 没有运行。

尝试这个：

sudo systemctl start wpa_supplicant.service

现在再次检查wifi列表：

nmcli dev wifi list 

像这样连接到网络：

nmcli --ask connection up <ssid>