I recently installed ubuntu in my laptop, and I can't connect to the wireless network. I have an intel Pro/wireless 3945ABG card, and I know it is supported. The driver is supposed to be installed by default, but I couldn't find it even though I enabled the restricted repository. So I installed the .inf driver that I have for windows xp, and it seems to be working. At least now I can see my AP in the list.
This is the output of iwconfig:
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11g ESSID:"SpeedStream"
Mode:Managed Frequency:2.462 GHz Access Point: Not-Associated
Bit Rate:54 Mb/s
Fragment thr=35613 B
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
It is telling me the AP is not associated. I can't get an IP address, and when I try to connect, it shows that I am connected with a 0% signal strength, even though the actual signal strength is actually high.
The content of my /etc/network/interfaces file is this:
iface lo inet loopback
I tried adding an entry for wlan0 manually, but that didn't work. The AP is not encrypted. I tried connecting using the terminal instead of the network manager as shown in one of the tutorials here, but that didn't work either. When I use dhclient wlan0, it tells me there are no leases in persistent database.
Does anyone know what the problem could possibly be?