salut la communaute ,
quand j'ai installé ubuntu la premiére fois ,la connexion wifi a été bien détecter au début ,mais 2 jours aprés je l'ai pérdue.je n'ai pas chercher a résourdre mon probléme avant puisque je me connecte avec un medem sagem chez moi,mais dans un cafe cyber ou dans mon ecole j'arrive pas a me connecter.
j'ai formater mon pc pour virer windowsXP et garder que ubuntu,et je me trouve avec le meme probléme ,la connexion est détecter que la premiere journée !!!
je vous passe les commandes suivantes:
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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supzero@supzero-laptop:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.10
DISTRIB_CODENAME=intrepid
DISTRIB_DESCRIPTION="Ubuntu 8.10"
supzero@supzero-laptop:~$ lsusb
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 032: ID 15d9:0a37  
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
supzero@supzero-laptop:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
05:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)
06:01.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
06:04.0 CardBus bridge: ENE Technology Inc CB-712/4 Cardbus Controller (rev 10)
06:04.1 FLASH memory: ENE Technology Inc ENE PCI Memory Stick Card Reader Controller (rev 01)
06:04.2 SD Host controller: ENE Technology Inc ENE PCI Secure Digital Card Reader Controller (rev 01)
06:04.3 FLASH memory: ENE Technology Inc FLASH memory: ENE Technology Inc: (rev 01)
06:04.4 FLASH memory: ENE Technology Inc SD/MMC Card Reader Controller (rev 01)
supzero@supzero-laptop:~$ sudo lshw -C network
[sudo] password for supzero: 
  *-network               
       description: Wireless interface
       product: BCM4311 802.11b/g WLAN
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: eth1
       version: 01
       serial: 00:19:7e:9f:d0:7b
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=5.10.27.12 latency=0 module=wl multicast=yes wireless=IEEE 802.11bg
  *-network
       description: Ethernet interface
       product: BCM4401-B0 100Base-TX
       vendor: Broadcom Corporation
       physical id: 1
       bus info: pci@0000:06:01.0
       logical name: eth0
       version: 02
       serial: 00:16:d4:e0:d9:99
       size: 100MB/s
       capacity: 100MB/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=192.168.0.253 latency=64 link=yes module=ssb multicast=yes port=twisted pair speed=100MB/s
supzero@supzero-laptop:~$ lsmod
Module                  Size  Used by
i915                   38656  2 
drm                    86056  3 i915
af_packet              25728  4 
binfmt_misc            16904  1 
vboxdrv               124328  0 
ppdev                  15748  0 
cpufreq_ondemand       14988  0 
cpufreq_stats          13188  0 
cpufreq_userspace      11396  0 
cpufreq_powersave       9856  0 
cpufreq_conservative    14600  0 
freq_table             12672  2 cpufreq_ondemand,cpufreq_stats
pci_slot               12680  0 
sbs                    19464  0 
sbshc                  13440  1 sbs
ipv6                  263972  25 
pppoatm                12032  0 
ppp_generic            32668  1 pppoatm
slhc                   14208  1 ppp_generic
parport_pc             39332  0 
lp                     17156  0 
parport                42604  3 ppdev,parport_pc,lp
joydev                 18368  0 
pcmcia                 43052  0 
acer_wmi               19008  0 
led_class              12164  1 acer_wmi
pcspkr                 10624  0 
serio_raw              13444  0 
psmouse                45200  0 
sdhci_pci              15360  0 
sdhci                  23940  1 sdhci_pci
mmc_core               58268  1 sdhci
yenta_socket           31756  1 
rsrc_nonstatic         19072  1 yenta_socket
pcmcia_core            43412  3 pcmcia,yenta_socket,rsrc_nonstatic
evdev                  17696  10 
iTCO_wdt               18596  0 
iTCO_vendor_support    11652  1 iTCO_wdt
b44                    35984  0 
ssb                    40580  1 b44
mii                    13440  1 b44
ieee80211_crypt_tkip    17024  0 
wl                   1080212  0 
snd_hda_intel         384176  3 
ieee80211_crypt        13572  2 ieee80211_crypt_tkip,wl
snd_pcm_oss            46848  0 
snd_mixer_oss          22784  1 snd_pcm_oss
snd_pcm                83204  2 snd_hda_intel,snd_pcm_oss
snd_seq_dummy          10884  0 
battery                18436  0 
container              11520  0 
ac                     12292  0 
video                  25232  0 
output                 11008  1 video
snd_seq_oss            38528  0 
snd_seq_midi           14336  0 
snd_rawmidi            29824  1 snd_seq_midi
snd_seq_midi_event     15232  2 snd_seq_oss,snd_seq_midi
wmi                    14504  1 acer_wmi
snd_seq                57776  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer              29960  2 snd_pcm,snd_seq
snd_seq_device         15116  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
button                 14224  0 
snd                    63268  15 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore              15328  1 snd
snd_page_alloc         16136  2 snd_hda_intel,snd_pcm
shpchp                 38036  0 
pci_hotplug            34976  1 shpchp
intel_agp              33724  1 
agpgart                42184  3 drm,intel_agp
iptable_nat            13448  0 
nf_nat                 25368  1 iptable_nat
nf_conntrack_ipv4      21900  3 iptable_nat,nf_nat
nf_conntrack           72032  3 iptable_nat,nf_nat,nf_conntrack_ipv4
iptable_mangle         10880  0 
iptable_filter         10752  0 
ip_tables              19600  3 iptable_nat,iptable_mangle,iptable_filter
x_tables               22916  2 iptable_nat,ip_tables
ext3                  133256  2 
jbd                    55828  1 ext3
mbcache                16004  1 ext3
usbhid                 35840  0 
hid                    50560  1 usbhid
sr_mod                 22212  0 
cdrom                  43168  1 sr_mod
sd_mod                 42392  4 
crc_t10dif              9984  1 sd_mod
sg                     39732  0 
ata_generic            12932  0 
ata_piix               24708  3 
pata_acpi              12160  0 
libata                178208  3 ata_generic,ata_piix,pata_acpi
scsi_mod              155212  4 sr_mod,sd_mod,sg,libata
dock                   16656  1 libata
ehci_hcd               43788  0 
uhci_hcd               30864  0 
usbcore               149488  4 usbhid,ehci_hcd,uhci_hcd
thermal                23708  0 
processor              42156  2 thermal
fan                    12548  0 
fbcon                  47648  0 
tileblit               10880  1 fbcon
font                   16512  1 fbcon
bitblit                13824  1 fbcon
softcursor              9984  1 bitblit
fuse                   60828  1 
supzero@supzero-laptop:~$ iwconfig
lo        no wireless extensions.
 
eth1      IEEE 802.11  Nickname:""
          Access Point: Not-Associated   
 
eth0      no wireless extensions.
 
supzero@supzero-laptop:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:d4:e0:d9:99  
          inet addr:192.168.0.253  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::216:d4ff:fee0:d999/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:16823 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14068 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:17437576 (17.4 MB)  TX bytes:1606950 (1.6 MB)
          Interrupt:21 
 
eth1      Link encap:Ethernet  HWaddr 00:19:7e:9f:d0:7b  
          inet6 addr: fe80::219:7eff:fe9f:d07b/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  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:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:19 
 
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:17 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:2011 (2.0 KB)  TX bytes:2011 (2.0 KB)
 
supzero@supzero-laptop:~$ sudo iwlist scan
lo        Interface doesn't support scanning.
 
eth1      Failed to read scan data : Invalid argument
 
eth0      Interface doesn't support scanning.
 
supzero@supzero-laptop:~$ uname -r -m 
2.6.27-11-generic i686
supzero@supzero-laptop:~$ cat  /etc/network/interfaces
auto lo
iface lo inet loopback
 
 
auto ppp0
iface ppp0 inet ppp
pre-up /etc/usbatm-iface/usbatm-updown $IFACE
provider adslusb
supzero@supzero-laptop:~$ nm-tool
 
NetworkManager Tool
 
State: connected
 
- Device: eth0 ----------------------------------------------------------------
  Type:              Wired
  Driver:            NULL(info.linux.driver)
  State:             connected
  Default:           yes
  HW Address:        00:16:D4:E0:D9:99
 
  Capabilities:
    Supported:       yes
    Carrier Detect:  yes
    Speed:           100 Mb/s
 
  Wired Settings
 
  IPv4 Settings:
    Address:         192.168.0.253
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.0.1
 
    DNS:             192.168.0.1
 
 
- Device: eth1 ----------------------------------------------------------------
  Type:              802.11 WiFi
  Driver:            wl
  State:             disconnected
  Default:           no
  HW Address:        00:19:7E:9F:D0:7B
 
  Capabilities:
    Supported:       yes
 
  Wireless Settings
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes
 
  Wireless Access Points
et pour le driver j'utilise :
Broadcom STA wireless driver
merci d'avance de m'avoir aider