Probleme wifi

arthur@Pc-de-Arthur:~$ sudo modprobe b43
[sudo] password for arthur:
arthur@Pc-de-Arthur:~$ sudo modprobe ssb
arthur@Pc-de-Arthur:~$

  *-network                                
       description: Ethernet interface     
       product: 88E8040 PCI-E Fast Ethernet Controller
       vendor: Marvell Technology Group Ltd.          
       physical id: 0                                 
       bus info: pci@0000:09:00.0                     
       logical name: eth0                             
       version: 12                                    
       serial: 00:1d:09:5c:6d:25                      
       size: 100MB/s                                  
       capacity: 100MB/s                              
       width: 64 bits                                 
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.22 duplex=full firmware=N/A ip=192.168.1.26 latency=0 link=yes module=sky2 multicast=yes port=twisted pair speed=100MB/s
  *-network
       description: Network controller
       product: BCM4312 802.11a/b/g
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:0b:00.0
       version: 01
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=b43-pci-bridge latency=0 module=ssb
  *-network:0 DISABLED
       description: Ethernet interface
       physical id: 2
       logical name: pan0
       serial: 5a:c6:ca:74:58:d0
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes
  *-network:1 DISABLED
       description: Wireless interface
       physical id: 3
       logical name: wlan0
       serial: 00:1f:e1:3b:97:5d
       capabilities: ethernet physical wireless
       configuration: broadcast=yes multicast=yes wireless=IEEE 802.11bg

arthur@Pc-de-Arthur:~$ sudo lsmod |egrep "b43|ssb"
b43                   131356  0
ssb                    40580  1 b43
rfkill                 17176  2 rfkill_input,b43
mac80211              216820  1 b43
led_class              12164  1 b43
input_polldev          11912  1 b43

# This file lists those modules which we don't want to be loaded by
# alias expansion, usually so some other driver will be loaded for the
# device instead.

# evbug is a debug tool that should be loaded explicitly
blacklist evbug

# these drivers are very simple, the HID drivers are usually preferred
blacklist usbmouse
blacklist usbkbd

# replaced by e100
blacklist eepro100

# replaced by tulip
blacklist de4x5

# causes no end of confusion by creating unexpected network interfaces
blacklist eth1394

# snd_intel8x0m can interfere with snd_intel8x0, doesn't seem to support much
# hardware on its own (Ubuntu bug #2011, #6810)
blacklist snd_intel8x0m

# Conflicts with dvb driver (which is better for handling this device)
blacklist snd_aw2

# causes failure to suspend on HP compaq nc6000 (Ubuntu: #10306)
blacklist i2c_i801

# replaced by p54pci
blacklist prism54

# replaced by b43 and ssb.
blacklist bcm43xx

# most apps now use garmin usb driver directly (Ubuntu: #114565)
blacklist garmin_gps

# replaced by asus-laptop (Ubuntu: #184721)
blacklist asus_acpi

# low-quality, just noise when being used for sound playback, causes
# hangs at desktop session start (Ubuntu: #246969)
blacklist snd_pcsp

# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.

fuse
lp
b43