wireless adapter

Settings Wireless Region Linux – Channel 13 Backtrack 4

By admin | Linux, Sample Work | No Comments

One of the most recent problems I stumbled upon while running Backtrack, or any other linux distro for that matter is setting the region on a wireless card. The typical procedure is :

[raw]iwconfig wlan0 channel 13[/raw]

And commonly you will get

[raw]error for wireless regquest ”set frequency”
(8b04)
set failed on device wlan0 ; invalid arugment[/raw]

There is an easy fix for this that will allow you to change the region mode your wireless adapter is in.

[raw]iw reg set FR[/raw] [raw]iw reg set US[/raw]

More on IW here.

References:

Channel	Center Frequency	Frequency Spread
1	2412 MHz	2399.5 MHz – 2424.5 MHz
2	2417 MHz	2404.5 MHz – 2429.5 MHz
3	2422 MHz	2409.5 MHz – 2434.5 MHz
4	2427 MHz	2414.5 MHz – 2439.5 MHz
5	2432 MHz	2419.5 MHz – 2444.5 MHz
6	2437 MHz	2424.5 MHz – 2449.5 MHz
7	2442 MHz	2429.5 MHz – 2454.5 MHz
8	2447 MHz	2434.5 MHz – 2459.5 MHz
9	2452 MHz	2439.5 MHz – 2464.5 MHz
10	2457 MHz	2444.5 MHz – 2469.5 MHz
11	2462 MHz	2449.5 MHz – 2474.5 MHz
12	2467 MHz	2454.5 MHz – 2479.5 MHz
13	2472 MHz	2459.5 MHz – 2484.5 MHz

Acer Aspire 3690 Broadcom Wireless 43xx Ubuntu 9.10 Karmic

By admin | Interest, Sample Work | No Comments

Issue : After installing Ubuntu 9.10 wireless and wired networking are either working sporadicly or not at all. The most vanilla solution you will find.

Target : Acer Aspire 3690-2159

OS : ubuntu-9.10-desktop-i386

Hardware : Broadcom 4318 Wireless Adapter

Ensure your wireless switch is turned on in the front before reading step 1.

1. Install Ubuntu 9.10

2. Plug in active internet connection the Wired ethernet

3. Run update-manager

4. Restart after Kernel update

5. Now with internet still plugged in, goto System>Administration>Hardware Drivers

6. Select the Broadcom B43 wireless drive and click activate.

7. Type in your administrator password

8. Restart

et Voila.