4

I'm trying to use wifi access in Ubuntu 12.04 and for some reason, I do not want to use network-manager. So, I removed it.

What I'm trying to do is to see what kind of APs around me, so I issued the following command and results in:

$ sudo iwlist wlan0 scan
wlan0 No scan results

I'm pretty sure that I have lot of APs around me, and I'm not sure that my device is not working correctly, or am I missing something.

lspci shows the correct device

$ lspci | grep Broad
02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)

I up the wlan0 with the following command

$ ifconfig wlan0 up

Could you tell me what I'm doing wrong here?

jaeyong
  • 261

3 Answers3

1

I had this same problem. It was an internal card and the system detected it. The drivers were loaded, but it found no wireless networks.

It was an antenna issue. I connected the antenna leads and it worked.

Ed Manet
  • 956
0

Try switching your wifi on using the manual button you have on your keyboard, or a manual switch.

This solved my wifi issue.

If it doesn't show the wifi driver or issues with the driver, then you can install the drivers first and disable secure boot.

elishambadi
  • 1
0

There are two possible drivers for your device, the native brcmsmac and bcmwl-kernel-source, also known as the STA driver. STA creates a wireless interface eth1 and not wlan0. Is the result the same if you try:

sudo iwlist eth1 scan

Moreover, depending on your Ubuntu version one or the other driver works better.

chili555
  • 60,188