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I bought a wifi adapter for my raspberry pi, but I have problems making work on raspberry pi.

I tested it on a PC running Ubuntu. It has exactly the same behavior, as follows:

  1. When inserted, lsusb shows it.

    $ lsusb                                                                                                                                                                     
    Bus 001 Device 003: ID 0bda:818b Realtek Semiconductor Corp.
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 002 Device 002: ID 04d9:1603 Holtek Semiconductor, Inc. Keyboard
    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    

    The first one -- Realtek Semiconductor Corp. -- is the wifi adapter.

  2. ifconfig doesn't list it.

    $ ifconfig                                                                                                                                                                  
    eth0      Link encap:Ethernet  HWaddr 00:19:66:83:c7:d4                                                                                                                                          
              inet addr:192.168.2.103  Bcast:192.168.2.255  Mask:255.255.255.0                                                                                                                       
              inet6 addr: fe80::219:66ff:fe83:c7d4/64 Scope:Link                                                                                                                                     
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1                                                                                                                                     
              RX packets:18399 errors:0 dropped:0 overruns:0 frame:0                                                                                                                                 
              TX packets:15381 errors:0 dropped:0 overruns:0 carrier:0                                                                                                                               
              collisions:0 txqueuelen:1000                                                                                                                                                           
              RX bytes:16238073 (16.2 MB)  TX bytes:2788219 (2.7 MB)                                                                                                                                 
    
    lo        Link encap:Local Loopback                                                                                                                                                              
              inet addr:127.0.0.1  Mask:255.0.0.0                                                                                                                                                    
              inet6 addr: ::1/128 Scope:Host                                                                                                                                                         
              UP LOOPBACK RUNNING  MTU:65536  Metric:1                                                                                                                                               
              RX packets:416 errors:0 dropped:0 overruns:0 frame:0                                                                                                                                   
              TX packets:416 errors:0 dropped:0 overruns:0 carrier:0                                                                                                                                 
              collisions:0 txqueuelen:0                                                                                                                                                              
              RX bytes:52273 (52.2 KB)  TX bytes:52273 (52.2 KB) 
    

I expected to see a wlan0, but it doesn't appear. I tried lot of ways to make it work, but still without success.

Would like to hear how can I solve the problem. The goal should be to connect to a router with username and password and get internet.

Where should I start? Maybe the drivers is the problem?

Pilot6
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