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I recently got a new wireless card, specifically Intel Dual Band Wireless-AC 7260 WiFi Bluetooth Half Mini Card. Previously I had been connecting with ethernet so this machine has never been on the wifi.

I've attempted to use nmcli to get things working to no avail, so I've fallen back to trying to get everything setup using wpa_supplicant.

First things first, I ensure that my interface is up with ifconfig wlp3s0 up. Next I attempt to scan for my wireless access point with iwlist wlp3s0 scanning which returns:

wlp3s0    Scan completed :
          Cell 01 - Address: 94:10:3E:70:60:FE
                    Channel:36
                    Frequency:5.18 GHz (Channel 36)
                    Quality=25/70  Signal level=-85 dBm
                    Encryption key:on
                    ESSID:"Foobar"
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000011eb802d
                    Extra: Last beacon: 2005ms ago
                    IE: Unknown: 0006466F6F626172
                    IE: Unknown: 01088C129824B048606C
                    IE: Unknown: 050400030000
                    IE: Unknown: 0706555320010B1E
                    IE: Unknown: 2D1A6F181FFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1624050000000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: BF0C3120C103FAFF0C03FAFF0C03
                    IE: Unknown: C005012A00F0FF
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: DD1E00904C336F181FFFFF000000000000000000000000000000000000000000
                    IE: Unknown: DD1A00904C3424050000000000000000000000000000000000000000
                    IE: Unknown: DD0700E04C02026004

I've setup my wpa_supplicant.conf file as such:

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel

# reading passphrase from stdin
network={
    ssid="Foobar"
    #psk="my-pass-phrase"
    psk=af865233abdc002e9181256fdbc34b81fa956fcf28ac33fd0ec92e25241eb6f3
    key_mgmt=WPA-PSK
        proto=WPA RSN
        pairwise=CCMP
    group=CCMP

I try to run wpa_supplicant with wpa_supplicant -B -Dnl80211 -iwlp3s0 -c/etc/wpa_supplicant/wpa_supplicant.conf which simply returns Successfully initialized wpa_supplicant.

Output from dmesg returns:

[ 1867.954640] wlp3s0: authenticate with 94:10:3e:70:60:fe
[ 1867.957296] wlp3s0: direct probe to 94:10:3e:70:60:fe (try 1/3)
[ 1868.159030] wlp3s0: direct probe to 94:10:3e:70:60:fe (try 2/3)
[ 1868.361207] wlp3s0: direct probe to 94:10:3e:70:60:fe (try 3/3)
[ 1868.562248] wlp3s0: authentication with 94:10:3e:70:60:fe timed out
[ 1882.404522] wlp3s0: authenticate with 94:10:3e:70:60:fe
[ 1882.407019] wlp3s0: direct probe to 94:10:3e:70:60:fe (try 1/3)
[ 1882.608645] wlp3s0: direct probe to 94:10:3e:70:60:fe (try 2/3)
[ 1882.810806] wlp3s0: direct probe to 94:10:3e:70:60:fe (try 3/3)
[ 1883.011897] wlp3s0: authentication with 94:10:3e:70:60:fe timed out

Any ideas why I can't connect?

1

After initializing with wpa supplicant, you'll need to use the DHCP client to request an IP addr like

dhclient wlp0... //replace with your interface name
0

Using Centos7 myself, I could connect to wifi using

 $ nmcli dev wifi list
 *  SSID                      MODE   CHAN  DÉBIT    SIGNAL  BARS  SÉCURITÉ    
    Livebox-3WYX              Infra  1     54 Mo/s  65      ▂▄▆_  WPA2  
 ...       

then

 $ nmcli --ask dev wifi connect Livebox-3WYX
 Mot de passe : ...
 Périphérique « wlo1 » activé avec « 9c234370-5a39-468d-9b62-202cbc56e9fe ».

What error/issue do you get using nmcli to connect your SSID?

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