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mikaeltb

Wifi instable...

Bonjour à tous,

et merci d'avance de m'éclairer...

Ma femme a un mac sur lequel j'ai branché en USB en modem à large bande passante. J'ai configuré son ordi afin de mettre un réseau wifi sécurisé (clé wep...). Mon ordi est un pc portable qui fonctionne sous linux avec wifi intégré. Il voit le réseau de ma femme. Des problèmes se posent alors :

1° mon pc a du mal à se connecter. Il y a un problème de clé wep : je tape le mot de passe de ma femme mais il ne se connecte pas. Une fenêtre apparait me demandant une clé wep. À cet emplacement, il y a un code caché que l'on peut voir (en cliquant sur "afficher la clé") qui ne correspond pas à ce que j'ai tapé... C'est un code qui apparaît et qui est toujours le même...

2° quand j'arrive enfin à me connecter, alors qu'il me dit que je suis connecté au réseau à 70%, mon internet est instable. Il se coupe toutes les 30 secondes environ. Donc c'est le bazar pour msn, skype,ou le poker...

J'ai lu des choses sur le net mais rien n'y fait. De plus, je ne peux connecter le modem directement sur mon ordi car comme j'habite à l'étranger (en Syrie), le pays n'apparaît dans la liste des réseaux connus par ubuntu.

Je vous envoie également les résultats de commande dans le terminal, je crois que ça aide.

Merci d'avance.

cat /etc/lsb-release

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=9.04
DISTRIB_CODENAME=jaunty
DISTRIB_DESCRIPTION="Ubuntu 9.04"

lsusb

Bus 001 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 002 Device 002: ID 04f3:0230 Elan Microelectronics Corp. 
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

lspci

00:00.0 Host bridge: ATI Technologies Inc RS480 Host Bridge (rev 01)
00:01.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:13.0 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller
00:13.1 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller
00:13.2 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller
00:14.0 SMBus: ATI Technologies Inc IXP SB400 SMBus Controller (rev 11)
00:14.1 IDE interface: ATI Technologies Inc IXP SB400 IDE Controller
00:14.3 ISA bridge: ATI Technologies Inc IXP SB400 PCI-ISA Bridge
00:14.4 PCI bridge: ATI Technologies Inc IXP SB400 PCI-PCI Bridge
00:14.5 Multimedia audio controller: ATI Technologies Inc IXP SB400 AC'97 Audio Controller (rev 02)
00:14.6 Modem: ATI Technologies Inc SB400 AC'97 Modem Controller (rev 02)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: ATI Technologies Inc Radeon XPRESS 200M 5955 (PCIE)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
05:02.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
05:09.0 CardBus bridge: Texas Instruments PCIxx21/x515 Cardbus Controller
05:09.2 FireWire (IEEE 1394): Texas Instruments OHCI Compliant IEEE 1394 Host Controller
05:09.3 Mass storage controller: Texas Instruments PCIxx21 Integrated FlashMedia Controller
05:09.4 SD Host controller: Texas Instruments PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller

sudo lshw -C network

  *-network:0             
       description: Ethernet interface
       product: RTL-8139/8139C/8139C+
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: eth0
       version: 10
       serial: 00:16:36:5e:c4:33
       size: 10MB/s
       capacity: 100MB/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=half latency=64 link=no maxlatency=64 mingnt=32 module=8139too multicast=yes port=MII speed=10MB/s
  *-network:1
       description: Network controller
       product: BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller
       vendor: Broadcom Corporation
       physical id: 2
       bus info: pci@0000:05:02.0
       version: 02
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master
       configuration: driver=b43-pci-bridge latency=64 module=ssb
  *-network:0
       description: Wireless interface
       physical id: 1
       logical name: wlan0
       serial: 00:90:4b:f7:be:e9
       capabilities: ethernet physical wireless
       configuration: broadcast=yes ip=10.0.2.2 multicast=yes wireless=IEEE 802.11bg
  *-network:1 DISABLED
       description: Ethernet interface
       physical id: 2
       logical name: pan0
       serial: ca:cb:06:b5:b2:19
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes

lsmod

Module                  Size  Used by
rfkill_input           12800  0 
binfmt_misc            16776  1 
radeon                342816  2 
drm                    96424  3 radeon
ppdev                  15620  0 
bridge                 56212  0 
stp                    10500  1 bridge
bnep                   20224  2 
lp                     17156  0 
parport                42220  2 ppdev,lp
snd_atiixp             24204  1 
snd_atiixp_modem       20360  0 
joydev                 18496  0 
snd_ac97_codec        112292  2 snd_atiixp,snd_atiixp_modem
arc4                    9856  2 
snd_seq_dummy          10756  0 
ecb                    10752  2 
ac97_bus                9856  1 snd_ac97_codec
snd_seq_oss            37760  0 
snd_pcm_oss            46336  0 
snd_mixer_oss          22656  1 snd_pcm_oss
snd_seq_midi           14336  0 
pcmcia                 44748  0 
b43                   131484  0 
snd_rawmidi            29696  1 snd_seq_midi
snd_seq_midi_event     15104  2 snd_seq_oss,snd_seq_midi
snd_pcm                83076  4 snd_atiixp,snd_atiixp_modem,snd_ac97_codec,snd_pcm_oss
snd_seq                56880  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_seq_device         14988  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
mac80211              217592  1 b43
snd_timer              29704  2 snd_pcm,snd_seq
cfg80211               38288  1 mac80211
sdhci_pci              15232  0 
tifm_7xx1              13824  0 
yenta_socket           32396  1 
rsrc_nonstatic         19328  1 yenta_socket
snd                    62756  13 snd_atiixp,snd_atiixp_modem,snd_ac97_codec,snd_seq_oss,snd_pcm_oss,snd_mixer_oss,snd_rawmidi,snd_pcm,snd_seq,snd_seq_device,snd_timer
soundcore              15200  1 snd
led_class              12036  1 b43
psmouse                61972  0 
video                  25360  0 
sdhci                  23940  1 sdhci_pci
tifm_core              15900  1 tifm_7xx1
pcmcia_core            43540  3 pcmcia,yenta_socket,rsrc_nonstatic
k8temp                 12416  0 
ati_agp                14988  0 
snd_page_alloc         16904  3 snd_atiixp,snd_atiixp_modem,snd_pcm
input_polldev          11912  1 b43
serio_raw              13444  0 
i2c_piix4              18448  0 
output                 11008  1 video
shpchp                 40212  0 
agpgart                42696  2 drm,ati_agp
usbhid                 42336  0 
ohci1394               38576  0 
ieee1394               94660  1 ohci1394
ssb                    41220  1 b43
8139too                32128  0 
8139cp                 27776  0 
mii                    13312  2 8139too,8139cp
fbcon                  46112  0 
tileblit               10752  1 fbcon
font                   16384  1 fbcon
bitblit                13824  1 fbcon
softcursor              9984  1 bitblit

iwconfig

lo        no wireless extensions.

eth0      no wireless extensions.

wmaster0  no wireless extensions.

wlan0     IEEE 802.11bg  ESSID:"iBook G4 de Fanny"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:14:51:85:3B:4B   
          Bit Rate=1 Mb/s   Tx-Power=20 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr=2352 B   
          Power Management:off
          Link Quality=70/100  Signal level:-38 dBm  Noise level=-71 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

pan0      no wireless extensions.

ifconfig

eth0      Link encap:Ethernet  HWaddr 00:16:36:5e:c4:33  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)
          Interruption:18 Adresse de base:0xa000 

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:1037 erreurs:0 :0 overruns:0 frame:0
          TX packets:1037 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0 
          Octets reçus:74876 (74.8 KB) Octets transmis:74876 (74.8 KB)

wlan0     Link encap:Ethernet  HWaddr 00:90:4b:f7:be:e9  
          inet adr:10.0.2.2  Bcast:10.0.2.255  Masque:255.255.255.0
          adr inet6: fe80::290:4bff:fef7:bee9/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:1837 erreurs:0 :0 overruns:0 frame:0
          TX packets:1815 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:1169174 (1.1 MB) Octets transmis:318304 (318.3 KB)

wmaster0  Link encap:UNSPEC  HWaddr 00-90-4B-F7-BE-E9-65-65-00-00-00-00-00-00-00-00  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)

sudo iwlist scan

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

wmaster0  Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: 00:0A:3B:F3:00:00
                    ESSID:""
                    Mode:Ad-Hoc
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=38/100  Signal level:-71 dBm  Noise level=-72 dBm
                    Encryption key:off
                    IE: Unknown: 00083735323030313632
                    IE: Unknown: 010116
                    IE: Unknown: 030101
                    IE: Unknown: 0406000300FF00FF
                    IE: Unknown: 06020000
                    IE: Unknown: 0000
                    IE: Unknown: 0000
                    IE: Unknown: 0000
                    IE: Unknown: 0000
                    IE: Unknown: 0000
                    Bit Rates:11 Mb/s
                    Extra:tsf=00000137322e5da2
                    Extra: Last beacon: 1484ms ago
          Cell 02 - Address: 00:1E:58:B6:9B:DC
                    ESSID:"kkah"
                    Mode:Master
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=31/100  Signal level:-78 dBm  Noise level=-72 dBm
                    Encryption key:on
                    IE: Unknown: 00046B6B6168
                    IE: Unknown: 010582848B962C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0100
                    IE: Unknown: 32080C1218243048606C
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                              6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Extra:tsf=0000004a68f981b7
                    Extra: Last beacon: 1228ms ago
          Cell 03 - Address: 00:14:51:85:3B:4B
                    ESSID:"iBook G4 de Fanny"
                    Mode:Master
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=68/100  Signal level:-40 dBm  Noise level=-72 dBm
                    Encryption key:on
                    IE: Unknown: 001969426F6F6B2047342064652046616E6E792042657373617264
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: Unknown: 32040C121860
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                              12 Mb/s; 48 Mb/s
                    Extra:tsf=00000000a15a4188
                    Extra: Last beacon: 604ms ago

pan0      Interface doesn't support scanning.

cat  /etc/network/interfaces

auto lo
iface lo inet loopback

nm-tool

NetworkManager Tool

State: connected

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            8139too
  State:             unavailable
  Default:           no
  HW Address:        00:16:36:5E:C4:33

  Capabilities:
    Carrier Detect:  yes
    Speed:           10 Mb/s

  Wired Properties
    Carrier:         off


- Device: wlan0  [Auto iBook G4 de Fanny] ------------------------------
  Type:              802.11 WiFi
  Driver:            b43
  State:             connected
  Default:           yes
  HW Address:        00:90:4B:F7:BE:E9

  Capabilities:
    Speed:           54 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    75200162:        Ad-Hoc, 00:0A:3B:F3:00:00, Freq 2412 MHz, Rate 11 Mb/s, Strength 38
    *iBook G4 de Fanny: Infra, 00:14:51:85:3B:4B, Freq 2462 MHz, Rate 54 Mb/s, Strength 70 WEP
    kkah:            Infra, 00:1E:58:B6:9B:DC, Freq 2437 MHz, Rate 54 Mb/s, Strength 31 WEP

  IPv4 Settings:
    Address:         10.0.2.2
    Prefix:          24 (255.255.255.0)
    Gateway:         10.0.2.1

    DNS:             10.0.2.1

uname -r -m

2.6.28-15-generic i686

Je ne sais pas si ça va vous aider, mais en tout cas merci d'avance.

mikaeltb

Re : Wifi instable...

je cherche le nom de ma carte wifi intégrée. Je crois que c'est (je l'ai trouvée dans périphériques et pilotes) :

Broadcom B43 wireless driver.

Je ne sais pas si ça peut aider et surtout si c'est la bonne info : est-ce la carte ou le pilote ??? S'il y a une chose qui manque, dites moi la manip à effectuer pour trouver les renseignements demandés.

Merci.

mikaeltb

Re : Wifi instable...

Encore des renseignements...

lspci | grep -i net

05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
05:02.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)