How to config USB wifi

i have a usb wifi, and i'm using the newest image (published at 9-18),
the type of chip of my usb wifi is rtl8192

and when i type:
iwconfig
It seems that the driver is working, and list wlan0 .........
but how to config it to connect the net?

the command: sudo iwconfig wlan0 essid *** key ***
it doesn't work!

when i use this usb wifi in Ubuntu, it can be configed by using GUI, and i just have to click the mouse to choose a wlan, and type the passward, the net can be connected automatically.
So this device is OK!

i just don't know how to config it, can anybody tell me

Have you tried the new GUI tool? There's a link to it on the desktop if you run startx.

No, I did'nt use the GUI tool of raspbian, actually, I just want to config it with command line. But the guide in the web seems can not work. Did anyone config the wifi of raspbi successfully?

Have you tried the new GUI tool? There's a link to it on the desktop if you run startx.

Hi,
iwconfig works only with wep encryption.
If you use WPA/WPA2 then iwconfig will not work.

My /etc/network/interfaces looks just like this:
auto wlan0
iface wlan0 inet dhcp
wpa-ssid "secret-wiki-net"
wpa-psk "verysecret-wpa-psk"

I can shut wlan0 up/down with:
ifup wlan0
ifdown wlan0

I can look with:
root@raspberrypi:/etc/default# iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"secret-wifi-net"
Mode:Managed Frequency:2.472 GHz Access Point: 74:EA:3A:FD:07:6F
Bit Rate=52 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:on
Link Quality=35/70 Signal level=-75 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:9 Missed beacon:0

And get a dynamic ip with:
dhclient wlan0


Hope that helps.

Olaf

Thanks a lot！

Hi,
iwconfig works only with wep encryption.
If you use WPA/WPA2 then iwconfig will not work.

My /etc/network/interfaces looks just like this:
auto wlan0
iface wlan0 inet dhcp
wpa-ssid "secret-wiki-net"
wpa-psk "verysecret-wpa-psk"

I can shut wlan0 up/down with:
ifup wlan0
ifdown wlan0

I can look with:
root@raspberrypi:/etc/default# iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"secret-wifi-net"
Mode:Managed Frequency:2.472 GHz Access Point: 74:EA:3A:FD:07:6F
Bit Rate=52 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:on
Link Quality=35/70 Signal level=-75 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:9 Missed beacon:0

And get a dynamic ip with:
dhclient wlan0


Hope that helps.

Olaf