Solved No Wi-Fi network on a PI 2 Model B

[MorgothSauron]

• I'm using a Pi 2 (Model B) with latest Recalbox installed (18.07.13). Ethernet network is working, but not Wi-Fi

• Wi-Fi network settings:

  • SSID visible ? Yes
  • Chanel: 3
  • WPA2-PSK/AES

• recalbox network Interfaces without the Wi-Fi dongle

$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP8000> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether b8:27:eb:a0:d9:77 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.11/24 brd 192.168.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::ba27:ebff:fea0:d977/64 scope link 
       valid_lft forever preferred_lft forever
$ 

• I configure Wi-Fi directly in recalbox.conf.

$ grep wifi recalbox.conf
##Activate wifi (0,1)
wifi.enabled=1
##Set wifi region
wifi.region=FR
wifi.ssid=le-wifi-de-morgoth
wifi.key=enc:U2FsdGVkX1/fU30c3mVxGS0ngl1HclFBOFv9Y1qPFFU=
#secondary wifi (not configurable via the user interface)
;wifi2.ssid=new ssid
;wifi2.key=new key
#third wifi (not configurable via the user interface)
;wifi3.ssid=new ssid
;wifi3.key=new key
$ 

• Here's the output of dmesg after connecting Wi-Fi dongle

[  350.254751] usb 1-1.2: new high-speed USB device number 4 using dwc_otg
[  350.356247] usb 1-1.2: New USB device found, idVendor=0bda, idProduct=8176
[  350.356262] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  350.356272] usb 1-1.2: Product: 802.11n WLAN Adapter
[  350.356281] usb 1-1.2: Manufacturer: Realtek
[  350.356290] usb 1-1.2: SerialNumber: 00e04c000001
[  350.525195] usbcore: registered new interface driver rtl8192cu

• A new network interfaces (wlan0) is added but no IP assigned

$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP8000> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether b8:27:eb:a0:d9:77 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.11/24 brd 192.168.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::ba27:ebff:fea0:d977/64 scope link 
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 40:a5:ef:0e:dc:e5 brd ff:ff:ff:ff:ff:ff
$ 

• I reconfigured the wifi.key with clear text value before rebooting. Still no Wi-Fi after reboot. No problem with this hardware configuration when running raspbian.

• Let me know if you need the complete dmesg output after rebooting the recalbox with the Wi-Fi dongle pluged-in.

• Any idea ?

[MorgothSauron]

I did an additional test. I'm able to perform a Wi-Fi network scan. My SSID is in the list.

$ iw dev wlan0 scan | grep SSID
        SSID: FreeWifi
        SSID: FreeWifi_secure
        SSID: le-wifi-de-morgoth
        SSID: FreeWifi
        SSID: Livebox-DE81
        SSID: FreeWifi_secure
        SSID: zita
        SSID: FreeWifi_secure
        SSID: FreeboxNanou14
        SSID: orange
        SSID: Freebox-0C6228
        SSID: FreeWifi_secure
$ 

So the Wi-Fi dongle seems to work properly. The question is why there is no IP assigned to the wlan0 interface ?

[OyyoDams]

@morgothsauron tu as quoi comme dongle ?

[MorgothSauron]

@oyyodams C'est un "Comfast" cf-wu810n acheté sur KUBII. Je sais qu'il n'est pas dans la liste des dongle compatibles, mais il fonctionne sans problème avec raspbian.

[OyyoDams]

@morgothsauron wai mais raspbian n'est pas Recalbox.

On ne l'a pas testé: https://github.com/recalbox/recalbox-os/wiki/Compatibility-(EN)

Je te conseille celui du recalstore.

[MorgothSauron]

@oyyodams Je sais que recalbox et raspbian sont différents. Je voulais vérifier sur le forum s'il n'y aurait pas une astuce pour faire fonctionner le wifi. Je vais commander le Edimax EW-7811Un. Merci

[MorgothSauron]

Ca y'est j'ai recu mon dongle Edimax EW-7811Un et ça fonctionne

Mon interface Wi-Fi a une adresse IP:

$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP8000> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether b8:27:eb:a0:d9:77 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP8000> mtu 1500 qdisc mq qlen 1000
    link/ether 74:da:38:eb:4a:15 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.11/24 brd 192.168.0.255 scope global wlan0
       valid_lft forever preferred_lft forever
    inet6 fe80::76da:38ff:feeb:4a15/64 scope link
       valid_lft forever preferred_lft forever
$

Et je peux downloadé un fichier de test:

$ wget -O /dev/null http://speedtest.wdc01.softlayer.com/downloads/test10.zip
--2018-08-05 20:11:34--  http://speedtest.wdc01.softlayer.com/downloads/test10.zip
Resolving speedtest.wdc01.softlayer.com (speedtest.wdc01.softlayer.com)... 208.43.102.250, 2607:f0d0:3001:78::2
Connecting to speedtest.wdc01.softlayer.com (speedtest.wdc01.softlayer.com)|208.43.102.250|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 11536384 (11M) [application/zip]
Saving to: '/dev/null'

/dev/null                     100%[=================================================>]  11.00M   601KB/s    in 20s

2018-08-05 20:11:55 (550 KB/s) - '/dev/null' saved [11536384/11536384]

$

Merci pour l'aide