Wireless USB Adapter

Icarus Alive icarus.alive at gmail.com
Mon Aug 8 10:07:42 UTC 2011

Try "killall wpa_supplicant" and try again.
Post the output of "dmesg | tail"

On Mon, Aug 8, 2011 at 6:03 AM, Jose Diaz Bardales
<jose.dbardales at gmail.com> wrote:
> Ladies and Gentlemen!
> Two days ago I decided to install Ubuntu Server 10.04 amd64 on a Desktop
> Acer that someone gave me (just to learn more about Ubuntu). The system
> has an Internal NIC which works perfectly (besides my cat5 wire in the
> middle of the living room) so I have a wireless usb adapter that I will
> like to use.
> Now here is the problem, my wireless usb adapter is a NetGear WG111 v3
> (Realtek RTL8187B) or at least is what I get after a "lsusb" command so
> I did some research which help me to learn some new tricks but confused
> at the same time =)
> I read some documentation that tells me to first verify that the driver
> is present and loaded so I did a "sudo lshw -C network" which says that
> the network for the Wireless interface is disable and I do not have a
> product name which make me suspicious of this being the culprit.
> Following I did a "sudo lsmod" which shows me:
> rtl8187   53204  0
> cfg80211  148341 2  rtl8187,mac80211
> To my understanding this modules are the drivers for my wireles usb
> adapter.
> Then I proceeded to edit "etc/network/interfaces" and added:
> auto wlan0
> iface wlan0 inet dhcp
> once finished I did a "sudo ifup wlan0" and see the DHCP protocol
> staring to look for a DHCP server which could not find. (I know I am not
> connected to the my router, yet)
> Finally I typed "ifconfig" and "iwconfig" and saw wlan0 interface
> present but without a conection information. so I typer "sudo iwlist
> wlan0 scan" which shows me all the information from my router.
> Ok, at this point I believe that my wireless usb adapter has been setup
> correctly but I need to tell it how to access my router which by the way
> is not open and by open I mean that it "needs a password" but it is
> discoverable which means its ESSID is been broadcast.
> What I am doing wrong or missing?
> I would like to mention that I found some information on "wpa_cli" which
> is a front end for the wpa_supplicant but when I want to use it says
> "Could not connect to the wpa_supplicat - re-trying" and makes me think
> if my usb adapter has been setup correctly.
> Thank you in advance for your time and any suggestions that you have.
> PS: Please, let me know if this emails needs to be address to the Ubuntu
> Server mailing list instead of of the Ubuntu User mailing list. I
> apologize for any inconvenience it may cause.
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