Wifi - No wireless interface present

[lex]

Hello again,

I posted already earlier but to no avail. I hoped I could connect my RPi just with an ethernet cable, but seeing as I had to use two routers it proved to be a bit above my league. So I decided to buy a wireless adapter to bypass the routers and connect through wifi. However, this also does not connect!

I am able to get online with my ethernet cable, but I can only access the RPi with one computer. My phone phone or any other device will not connect. When I put in my SSID and password I get an error: No wireless interface present. I have no clue what I’m doing wrong…hopefully somebody can help me out. I would really like to use this software! Sorry for bothering you guys with these annoying/embarrassing questions…

[MobeyDuck]

Please post a detailed setup and plug in the Wifi adapter before booting.

[lex]

@MobeyDuck

Please post a detailed setup and plug in the Wifi adapter before booting.

The wifi adapter was connected before booting.

For setup: I have a Raspberry Pi 2 Model B 1GB, and a Sitecom n300 wifi usb adapter. And I’m running Windows 7 on my home computer

[balbuze]

• First thing : all devices you want to use with volumio have to be on the same network.
  With 2 routers, except if on is used as switch, you’ll have two differents networks…
  Before attempting to use your usb Wifi dongle, you have to make sure of that.
  -Second thing : Your usb have to be supported by the kernel. 3 cases :
  - natively supported = it works out of the box
  - not natively supported, but available drivers. A bit of tweaking and it should be done
  - not supported and no available kernel : no way unsless if your are able to write a driver…
  Type lsusb : you should see your dongle
  Type iwconfig : you should see if it is recognized
  Type dmesg | tail to see if there is some error
  …

[lex]

@balbuze

• First thing : all devices you want to use with volumio have to be on the same network.
  With 2 routers, except if on is used as switch, you’ll have two differents networks…
  Before attempting to use your usb Wifi dongle, you have to make sure of that.
  -Second thing : Your usb have to be supported by the kernel. 3 cases :
  - natively supported = it works out of the box
  - not natively supported, but available drivers. A bit of tweaking and it should be done
  - not supported and no available kernel : no way unsless if your are able to write a driver…
  Type lsusb : you should see your dongle
  Type iwconfig : you should see if it is recognized
  Type dmesg | tail to see if there is some error
  …

Ye I know the router story is a bit of a pain in the ass, that’s why I wanted to connect wireless. But I can see Volumio via my home pc. I have tried to connect it directly to the first router, which works. And I also connected it on the switch and it also works. But I don’t get to access it on all devices, like you said apparently I have 2 different networks. I don’t really know how to make it one.

However that doesn’t really matter as I only need Volumio to configure the wireless network, thus not needing it to be connected with an Ethernet cable.

So I’m guessing my dongle is the problem? I’ve also already updated the drivers from the Sitecom website, just to be sure. Or do I need to install other drivers?

[lex]

I forgot to add, I typed in the commands and I got nothing noticeable.

lsusb: I can see my wifi adapter
iwconfig: this command is not found, is this normal?
dmesg: a whole list, but no errors appear

[runout]

Hi,

same Problems

lsusb:

Bus 001 Device 004: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS]

lsmod:

Module Size Used by nfsd 263569 2 ipv6 333229 42 snd_bcm2835 18850 1 snd_pcm 75388 1 snd_bcm2835 snd_seq 53078 0 snd_seq_device 5628 1 snd_seq snd_timer 17784 2 snd_pcm,snd_seq snd 51667 7 snd_bcm2835,snd_timer,snd_pcm,snd_seq,snd_seq_device joydev 8903 0 evdev 9950 0 8192cu 528381 0 uio_pdrv_genirq 2958 0 uio 8119 1 uio_pdrv_genirq

I use a very common EDIMAX EW-7811Un Wireless USB-Stick.
Is there a Realtek-Driver in the V1.55-Image ?

If not how to install on Volumio-Image ?

Greetings Runout

[runout]

oops…

“sudo iwlist wlan0 scan” show my WLAN

/////////////////////////////////// Cell 01 - Address: 7C:4F:B5:48:56:8F ESSID:"" Protocol:IEEE 802.11bgn Mode:Master Frequency:2.437 GHz (Channel 6) Encryption key:on Bit Rates:270 Mb/s Extra:wpa_ie=dd1a0050f20101000050f20202000050f2020050f20401000050f202 IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : TKIP CCMP Authentication Suites (1) : PSK Extra:rsn_ie=30180100000fac020200000fac02000fac040100000fac020000 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : TKIP CCMP Authentication Suites (1) : PSK IE: Unknown: DD130050F204104A0001101044000102103C000103 Quality=96/100 Signal level=46/100 //////////////////////////////////

the Encryption is WPA/WPA2
I think WPA_Supplicant is not used in /etc/network/interfaces