http://forum.ubuntu-fr.org/viewtopic.php?id=582051
et plus globalement:
http://www.google.fr/search?q=Network+c … ntu-fr.org

je suis en possession d'un dell inspiron 1720 et je fonctionne sur 11.10 32 bit.

j'ai actuellement un problème avec le wifi étant donné qu'il ne scanne aucun réseau. j'ai déja regardé ce qu'on pouvait faire sur internet, mais mes tentatives se sont montrées infructueuses... à la liste de manips à faire avant de poster j'ai ceci:

dave@dave-Inspiron-1720:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.10
DISTRIB_CODENAME=oneiric
DISTRIB_DESCRIPTION="Ubuntu 11.10"
dave@dave-Inspiron-1720:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 05a9:2640 OmniVision Technologies, Inc. OV2640 Webcam
Bus 003 Device 006: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 003 Device 007: ID 413c:8126 Dell Computer Corp. Wireless 355 Bluetooth
Bus 003 Device 008: ID 0a5c:4502 Broadcom Corp. Keyboard (Boot Interface Subclass)
Bus 003 Device 009: ID 0a5c:4503 Broadcom Corp. Mouse (Boot Interface Subclass)
dave@dave-Inspiron-1720:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c)
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 0c)
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (secondary) (rev 0c)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f2)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA IDE Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02)
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
03:01.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
03:01.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)
0c:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)
dave@dave-Inspiron-1720:~$ lspci -nn | grep -i net
03:00.0 Ethernet controller [0200]: Broadcom Corporation BCM4401-B0 100Base-TX [14e4:170c] (rev 02)
0c:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)
dave@dave-Inspiron-1720:~$ sudo lshw -C network
[sudo] password for dave:
  *-network               
       description: Network controller
       product: BCM4311 802.11b/g WLAN
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:0c:00.0
       version: 01
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=b43-pci-bridge latency=0
       resources: irq:17 memory:fe8fc000-fe8fffff
  *-network
       description: Ethernet interface
       product: BCM4401-B0 100Base-TX
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth0
       version: 02
       serial: 00:1d:09:bf:ae:4a
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=b44 driverversion=2.0 duplex=full ip=192.168.1.3 latency=64 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:17 memory:fe5fe000-fe5fffff
dave@dave-Inspiron-1720:~$ lsmod
Module                  Size  Used by
parport_pc             32114  0
ppdev                  12849  0
bnep                   17923  2
rfcomm                 38408  8
joydev                 17393  0
snd_hda_codec_idt      60049  1
dell_wmi               12601  0
sparse_keymap          13658  1 dell_wmi
b44                    31443  0
uvcvideo               67271  0
videodev               85626  1 uvcvideo
binfmt_misc            17292  1
ssb                    50682  1 b44
r852                   17901  0
sm_common              16737  1 r852
nand                   49706  2 r852,sm_common
nand_ids                8547  1 nand
psmouse                73673  0
wl                   2646601  0
nand_bch               13003  1 nand
bch                    21757  1 nand_bch
r592                   17808  0
serio_raw              12990  0
nand_ecc               13070  1 nand
memstick               15857  1 r592
mtd                    35852  2 sm_common,nand
snd_hda_intel          24262  2
snd_hda_codec          91859  2 snd_hda_codec_idt,snd_hda_intel
snd_hwdep              13276  1 snd_hda_codec
btusb                  18160  2
snd_pcm                80435  2 snd_hda_intel,snd_hda_codec
bluetooth             148839  23 bnep,rfcomm,btusb
snd_seq_midi           13132  0
snd_rawmidi            25241  1 snd_seq_midi
snd_seq_midi_event     14475  1 snd_seq_midi
snd_seq                51567  2 snd_seq_midi,snd_seq_midi_event
i915                  509519  3
wmi                    18744  1 dell_wmi
lib80211               14570  1 wl
snd_timer              28932  2 snd_pcm,snd_seq
snd_seq_device         14172  3 snd_seq_midi,snd_rawmidi,snd_seq
drm_kms_helper         32889  1 i915
drm                   192194  4 i915,drm_kms_helper
snd                    55902  13 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
i2c_algo_bit           13199  1 i915
video                  18908  1 i915
soundcore              12600  1 snd
snd_page_alloc         14115  2 snd_hda_intel,snd_pcm
lp                     17455  0
parport                40930  3 parport_pc,ppdev,lp
usbhid                 41905  0
hid                    77367  1 usbhid
sdhci_pci              13658  0
sdhci                  27360  1 sdhci_pci
firewire_ohci          35854  0
firewire_core          56937  1 firewire_ohci
crc_itu_t              12627  1 firewire_core
dave@dave-Inspiron-1720:~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

dave@dave-Inspiron-1720:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1d:09:bf:ae:4a 
          inet adr:192.168.1.3  Bcast:192.168.1.255  Masque:255.255.255.0
          adr inet6: fe80::21d:9ff:febf:ae4a/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:20869 erreurs:0 :0 overruns:0 frame:0
          TX packets:15532 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000
          Octets reçus:28009528 (28.0 MB) Octets transmis:1694454 (1.6 MB)
          Interruption:17

lo        Link encap:Boucle locale 
          inet adr:127.0.0.1  Masque:255.0.0.0
          adr inet6: ::1/128 Scope:Hôte
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          Packets reçus:944 erreurs:0 :0 overruns:0 frame:0
          TX packets:944 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0
          Octets reçus:76280 (76.2 KB) Octets transmis:76280 (76.2 KB)

dave@dave-Inspiron-1720:~$ sudo iwlist scan
lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

dave@dave-Inspiron-1720:~$ uname -r -m
3.0.0-16-generic i686
dave@dave-Inspiron-1720:~$ cat  /etc/network/interfaces
auto lo
iface lo inet loopback

dave@dave-Inspiron-1720:~$ nm-tool

NetworkManager Tool

State: connected (global)

- Device: eth0  [Wired connection 1] -------------------------------------------
  Type:              Wired
  Driver:            b44
  State:             connected
  Default:           yes
  HW Address:        00:1D:09:BF:AE:4A

  Capabilities:
    Carrier Detect:  yes
    Speed:           100 Mb/s

  Wired Properties
    Carrier:         on

  IPv4 Settings:
    Address:         192.168.1.3
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.1.1

    DNS:             192.168.1.1

dave@dave-Inspiron-1720:~$ sudo rfkill list
1: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
dave@dave-Inspiron-1720:~$

est-ce que quelqu'un pourrait m'aider? merci d'avance, David