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I've just installed on my Debian Sid with XFCE4 network manager, but I have a problem, no wireless connection are shown. What Should I do? I used to use wicd but I had problems to connect to free wifi :S I don' t know why.

However now I'm connected from terminal, but I don't know why connections aren't shown in network manager..

Sameone can help me? Thank you.

EDIT: Now is showing but network manager gives me this error: enter image description here

EDIT2:

My /etc/network/interfaces

auto lo
iface lo inet loopback
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Can you post the content of /etc/network/interfaces? It may be that wicd added stanzas to manage the wireless interface from within that file. Debian's network manager refuses to look at an interface that is managed from within /etc/network/interfaces. – Joseph R. Mar 2 '13 at 0:00
    
added, I changed /etc/polkit-1/localauthority/10-vendor.d/org.freedesktop.NetworkManager.pkla as a friend adviced me.. before I was able to see the connection and connect from root user, now I can't can you write me your settings ? – AlessioMTX Mar 2 '13 at 11:38
1  
Well your interfaces file looks correct to me. it seems the problem lies elsewhere. – Joseph R. Mar 2 '13 at 12:34
    
"I used to use wicd..." and deleted the package? purged it? because if you have more than a single network manager package even partially active you will drive yourself mad with the resulting conflicts. – Theophrastus Sep 21 '15 at 21:59

1) u can use the Network-manager or wicd but not the 2 at same time

apt-get remove wicd

2)find the network device

lspci -nn | grep -i network

3)verify the kernel module

lspci -k | grep -i network -A 2

the ouput is somthing like

 02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
      Subsystem: AzureWave Device 2047
      Kernel driver in use: bcma-pci-bridge

if not try to install bcma from synaptic or software center

apt-get update && apt-get install wpasupplicant wireless-tools 

ifconfig wlan0 down

ifconfig wlan0 up
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If possible, download and install wireless-tools . Once installed and you know for a fact that there is at least one wi-fi AP in the vicinity which is up and running then do :-

$ sudo iwlist scan wlan0

Let us know what is the output of that. Do you get something like :-

lan0     Scan completed :
          Cell 01 - Address: xx:xx:xx:xx:xx:xx
                    Channel:8
                    Frequency:2.447 GHz (Channel 8)
                    Quality=33/70  Signal level=-77 dBm  
                    Encryption key:on
                    ESSID:"dlink"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master

As can be seen you get the ESSID of the AP as well as what rates it can work at. Would at least get you something more than now.

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