Wireless setup on Debian (Fujitsu Lifebook S7110)


The S7110 uses the Intel® PRO/Wireless 3945ABG Network Connection adapter iwl3945. Use lspci to find out what type of network card you have:

# lspci -nn | grep Intel
05:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG Network Connection [8086:4222] (rev 02)

You’ll need at least the 2.6.24 kernel, available on Lenny onwards. If you’re using Etch (or even Sarge), tough luck. Significant upgrades to follow. Find out what kernel is loaded:

# uname -a
Linux woteba 2.6.26-1-686 #1 SMP Thu Aug 28 12:00:54 UTC 2008 i686 GNU/Linux

I’m using 2.6.26, which is recent. Otherwise add the following line to /etc/apt/source.list:

deb lenny main contrib non-free

Now use Synaptic Package Manager to download at least the following packages:


After everything is downloaded and set up successfully, you’ll need to reboot into the new kernel, then:

# modprobe iwl3945
# iwconfig
wlan0     IEEE 802.11  ESSID:"MakeTeaNotWar"
Mode:Managed  Frequency:2.412 GHz  Access Point: 00:1F:9E:CF:58:B0
Bit Rate=54 Mb/s   Tx-Power=14 dBm
Retry min limit:7   RTS thr:off   Fragment thr=2352 B
Encryption key:6565-1671-75
Link Quality=76/100  Signal level=-58 dBm  Noise level=-87 dBm
Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
Tx excessive retries:0  Invalid misc:0   Missed beacon:0

(Should the iwconfig command be not found, install wireless-tools.)

The output above shows a connection to the router with SSID MakeTeaNotWar.