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WLAN(WiFi) of Ubuntu 8.04 on DELL D420, Kernel 2.6.24-19

September 13th, 2009

After Ubuntu 8.04 updating to Kernel 2.6.24-19-generic, my wireless card is lost and WLAN configuration is invalid.

It spent my 4 hours to solve this problem, the following is summary:

1. Install b43-fwcutter,

sudo apt-get install b43-fwcutter

2. Run  b43-fwcutter

sudo /usr/share/b43-fwcutter/install_bcm43xx_firmware.sh

3.rmmod

rmmod ndiswrapper
rmmod ssb
rmmod b43

4.modprobe

modprobe ndiswrapper
modprobe ssb
modprobe b43

5. To check wlan0, OK

ifconfig -a

6. Config WLAN

Ubuntu Status bar, left click “Network”, Mannual configuration, unlock, Wireless connection, Properties, WPA, DHCP or IP (depend on your AP), disable LAN, save as a new network location.

Before these steps,

I have updated ndiswrapper to V1.9, both common and util, and found no ndiswrapper in /usr/sbin, so make a link(ln -s).

Reinstall DELL Wireless bcmw15.inf

The posts I have read,

1. HOWTO: WLan via Ndiswrapper http://ubuntuforums.org/showthread.php?t=190967

2. http://www.lupaworld.com/home/space-47147-do-blog-id-123368.html, This article contains Chinese chars, and it’s the most important article.

3. Other posts: please search ndiswrapper, and fwcutter.

It works, so I post this article by WLAN.