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yo@yo:~$ sudo hwinfo --wlan
05: PCI b00.0: 0282 WLAN controller                             
  [Created at pci.314]
  UDI: /org/freedesktop/Hal/devices/pci_8086_4222
  Unique ID: IluS.PZB6OQ9BaVB
  Parent ID: qTvu.TkjeLK60Af8
  SysFS ID: /devices/pci0000:00/0000:00:1c.1/0000:0b:00.0
  SysFS BusID: 0000:0b:00.0
  Hardware Class: network
  Model: "Intel PRO/Wireless 3945ABG Network Connection"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x4222 "PRO/Wireless 3945ABG Network Connection"
  SubVendor: pci 0x8086 "Intel Corporation"
  SubDevice: pci 0x1021 
  Revision: 0x02
  Features: WLAN
  Memory Range: 0xf9eff000-0xf9efffff (rw,non-prefetchable)
  IRQ: 17 (no events)
  Module Alias: "pci:v00008086d00004222sv00008086sd00001021bc02sc80i00"
  Driver Info #0:
    Driver Status: iwl3945 is active
    Driver Activation Cmd: "modprobe iwl3945"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #18 (PCI bridge)

sudo lsmod |grep iwl3945
iwl3945                84100  0 
iwlcore               112768  1 iwl3945
lbm_cw_mac80211       227492  2 iwl3945,iwlcore
lbm_cw_cfg80211        73760  3 iwl3945,iwlcore,lbm_cw_mac80211
led_class              12036  2 iwl3945,iwlcore

yo@yo:~$ sudo dpkg -l |grep firmware
ii  linux-firmware                             1.11                                      Firmware for Linux kernel drivers

 yo@yo:~$ sudo ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1d:09:5b:20:3f  
          inet addr:192.168.1.100  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::21d:9ff:fe5b:203f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1947 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1755 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2184713 (2.1 MB)  TX bytes:198042 (198.0 KB)
          Interrupt:16 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

yo@yo:~$ sudo modinfo iwl3945
filename:       /lib/modules/2.6.28-13-generic/updates/iwl3945.ko
firmware:       lbm-iwlwifi-3945-2.ucode
license:        GPL
author:         Copyright(c) 2003-2009 Intel Corporation <ilw@linux.intel.com>
version:        1.2.26ks
description:    Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux
srcversion:     6D2DCA16AE42ED29975784D
alias:          pci:v00008086d00004227sv*sd*bc*sc*i*
alias:          pci:v00008086d00004222sv*sd*bc*sc*i*
alias:          pci:v00008086d00004227sv*sd00001014bc*sc*i*
alias:          pci:v00008086d00004222sv*sd00001044bc*sc*i*
alias:          pci:v00008086d00004222sv*sd00001034bc*sc*i*
alias:          pci:v00008086d00004222sv*sd00001005bc*sc*i*
depends:        lbm_cw-mac80211,iwlcore,led-class,lbm_cw-cfg80211
vermagic:       2.6.28-13-generic SMP mod_unload modversions 586 
parm:           antenna:select antenna (1=Main, 2=Aux, default 0 [both]) (int)
parm:           disable:manually disable the radio (default 0 [radio on]) (int)
parm:           swcrypto:using software crypto (default 1 [software])
 (int)
parm:           debug:debug output mask (uint)
parm:           disable_hw_scan:disable hardware scanning (default 0) (int)
parm:           queues_num:number of hw queues. (int)
parm:           fw_restart3945:restart firmware in case of error (int)