Wifi BCM4318 : bit rate mystérieux

Antho33 · Le 26/08/2009, à 21:41

bonsoir, d'habitude j'arrive à me débrouille seul avec ma distrib mais là ! Je bloque... Je me permet donc d'ouvrir ce sujet.

J'ai une cate wifi Broadcom BCM4318 contrôlé par "Broadcom B43 wireless driver" (installé avec le module "Système / Admin / Pilotes de Périphérique" et fwcutter).

Problème
Ma carte wifi se comporte bizarrement,
- chez mes parents : aucun problème (9box SFR - pas de clefs WEP ou WPA - filtrage par adresse MAC)
- chez moi : le bit rate tombe inexplicablement à 1 (freebox - cle WEP)

Solution testées
- Côté ubuntu
J'ai évidemment essayé de fixer manuellement le bit-rate
J'ai essayé de changer de pilote

- Coté box
J'ai essayé de changer le canal
J'ai essayé le WPA

Sans succès
Est-ce quelqu'un à une explication sur ce comportement ma foi assez embêtent
Quelqu'un a éventuellement une idée pour tenter de résoudre ça ?

Résultat des commandes basiques
:~$ 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 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

:~$ lspci

00:00.0 Host bridge: Silicon Integrated Systems [SiS] 760/M760 Host (rev 03)
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SG86C202
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS963 [MuTIOL Media IO] (rev 25)
00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2 SMBus Controller
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE]
00:02.6 Modem: Silicon Integrated Systems [SiS] AC'97 Modem Controller (rev a0)
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] AC'97 Sound Controller (rev a0)
00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller
00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet (rev 91)
00:06.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 02)
00:0b.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN 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
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter

:~$ sudo lshw -C network

*-network:0
description: Ethernet interface
product: SiS900 PCI Fast Ethernet
vendor: Silicon Integrated Systems [SiS]
physical id: 4
bus info: pci@0000:00:04.0
logical name: eth0
version: 91
serial: 00:c0:9f:a9:fc:e7
size: 100MB/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=sis900 driverversion=v1.08.10 Apr. 2 2006 duplex=full ip=192.168.0.33 latency=173 link=yes maxlatency=11 mingnt=52 module=sis900 multicast=yes port=MII speed=100MB/s
*-network:1
description: Network controller
product: BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller
vendor: Broadcom Corporation
physical id: b
bus info: pci@0000:00:0b.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: eth1
serial: 00:0e:9b:d5:67:c7
capabilities: ethernet physical wireless
configuration: broadcast=yes ip=192.168.0.33 multicast=yes wireless=IEEE 802.11bg
*-network:1 DISABLED
description: Ethernet interface
physical id: 2
logical name: pan0
serial: fe:06:53:db:a8:db
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
ppdev 15620 0
bridge 56212 0
stp 10500 1 bridge
bnep 20224 2
video 25360 0
output 11008 1 video
lp 17156 0
parport 42220 2 ppdev,lp
arc4 9856 2
ecb 10752 2
snd_intel8x0m 22028 0
snd_seq_dummy 10756 0
b43 131484 0
snd_seq_oss 37760 0
snd_intel8x0 37532 4
pcmcia 44748 0
snd_seq_midi 14336 0
snd_ac97_codec 112292 2 snd_intel8x0m,snd_intel8x0
joydev 18496 0
sis_agp 15360 0
mac80211 217592 1 b43
snd_rawmidi 29696 1 snd_seq_midi
snd_seq_midi_event 15104 2 snd_seq_oss,snd_seq_midi
ac97_bus 9856 1 snd_ac97_codec
snd_pcm_oss 46336 0
snd_mixer_oss 22656 1 snd_pcm_oss
amd64_agp 18184 1
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
snd_pcm 83076 5 snd_intel8x0m,snd_intel8x0,snd_ac97_codec,snd_pcm_oss
sisfb 251988 1
yenta_socket 32396 1
rsrc_nonstatic 19328 1 yenta_socket
cfg80211 38288 1 mac80211
snd_timer 29704 2 snd_seq,snd_pcm
i2c_sis96x 12420 0
shpchp 40212 0
k8temp 12416 0
pcmcia_core 43540 3 pcmcia,yenta_socket,rsrc_nonstatic
agpgart 42696 2 sis_agp,amd64_agp
led_class 12036 1 b43
psmouse 61972 0
pcspkr 10496 0
snd 62756 18 snd_intel8x0m,snd_seq_oss,snd_intel8x0,snd_ac97_codec,snd_rawmidi,snd_pcm_oss,snd_mixer_oss,snd_seq,snd_seq_device,snd_pcm,snd_timer
soundcore 15200 1 snd
snd_page_alloc 16904 3 snd_intel8x0m,snd_intel8x0,snd_pcm
serio_raw 13444 0
input_polldev 11912 1 b43
evbug 10752 0
ssb 41220 1 b43
sis900 28288 0
mii 13312 1 sis900
fbcon 46112 72
tileblit 10752 1 fbcon
font 16384 1 fbcon
bitblit 13824 1 fbcon
softcursor 9984 1 bitblit
vesafb 13828 0

:~$ iwconfig

lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
eth1 IEEE 802.11bg ESSID:"Shaken"
Mode:Managed Frequency:2.462 GHz Access Point: 12:39:7D:5D:B6:AC
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=61/100 Signal level:0 dBm Noise level=-11 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:c0:9f:a9:fc:e7
inet adr:192.168.0.33 Bcast:192.168.0.255 Masque:255.255.255.0
adr inet6: fe80::2c0:9fff:fea9:fce7/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:8755 erreurs:0 :0 overruns:0 frame:0
TX packets:8822 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:6768396 (6.7 MB) Octets transmis:1649806 (1.6 MB)
Interruption:19 Adresse de base:0x1800
eth1 Link encap:Ethernet HWaddr 00:0e:9b:d5:67:c7
inet adr:192.168.0.33 Bcast:192.168.0.255 Masque:255.255.255.0
adr inet6: fe80::20e:9bff:fed5:67c7/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:1963 erreurs:0 :0 overruns:0 frame:0
TX packets:1772 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:1453359 (1.4 MB) Octets transmis:503043 (503.0 KB)
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:142 erreurs:0 :0 overruns:0 frame:0
TX packets:142 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
Octets reçus:20091 (20.0 KB) Octets transmis:20091 (20.0 KB)
wmaster0 Link encap:UNSPEC HWaddr 00-0E-9B-D5-67-C7-00-00-00-00-00-00-00-00-00-00
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

eth1 Scan completed :
Cell 01 - Address: 12:39:7D:5D:B6:AC
ESSID:"Shaken"
Mode:Master
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=73/100 Signal level:0 dBm Noise level=-11 dBm
Encryption key:on
IE: Unknown: 000D5368616B656E5F4C616E643333
IE: Unknown: 010882848B961224486C
IE: Unknown: 03010B
IE: Unknown: 2A0104
IE: Unknown: 32040C183060
IE: Unknown: 2D1A6E1017FFFF000001000000000000000000000000000000000000
IE: Unknown: 3D160B070700000000000000000000000000000000000000
IE: Unknown: 3E0100
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
IE: Unknown: 7F0101
IE: Unknown: DD07000C4300000000
IE: Unknown: DD1E00904C336E1017FFFF000001000000000000000000000000000000000000
IE: Unknown: DD1A00904C340B070700000000000000000000000000000000000000
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 12 Mb/s
24 Mb/s; 48 Mb/s
Extra:tsf=000000011edca542
Extra: Last beacon: 800ms ago

:~$ uname -r -m

uname -r -m

:~$ cat /etc/network/interfaces

cat /etc/network/interfaces
auto lo
iface lo inet loopback

:~$ nm-tool

State: connected
- Device: eth0 [Auto eth0] ----------------------------------------------------
Type: Wired
Driver: sis900
State: connected
Default: yes
HW Address: 00:C0:9F:A9:FC:E7
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.0.33
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.254
DNS: 212.27.40.241
DNS: 212.27.40.240

- Device: eth1 [Auto Shaken] -------------------------------------------
Type: 802.11 WiFi
Driver: b43
State: connected
Default: no
HW Address: 00:0E:9B:D5:67:C7
Capabilities:
Speed: 54 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
SpeedTouch0CDAF6:Infra, 00:14:7F:B3:81:99, Freq 2437 MHz, Rate 54 Mb/s, Strength 66 WEP
*Shaken: Infra, 12:39:7D:5D:B6:AC, Freq 2462 MHz, Rate 54 Mb/s, Strength 71 WEP
FreeWifi: Infra, 12:39:7D:5D:B6:AE, Freq 2462 MHz, Rate 54 Mb/s, Strength 73
freephonie: Infra, 12:39:7D:5D:B6:AF, Freq 2462 MHz, Rate 54 Mb/s, Strength 80 WPA Enterprise
IPv4 Settings:
Address: 192.168.0.33
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.254
DNS: 212.27.40.241
DNS: 212.27.40.240

Antho33 · Le 30/08/2009, à 21:21

je me permet un petit up.
maladresse dans mon post ou ça inspire personne ?

toutafai · Le 30/08/2009, à 23:06

peut etre un bitrate reglé en mode auto (qui s'adapte (mal) aux conditions)...

Je ne garatie rien, mais essaye de fixer le biterate avec

sudo iwconfig wlan0 rate 54M

vois si cela change quelque chose

Ubuntu-fr

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#1 Le 26/08/2009, à 21:41

Wifi BCM4318 : bit rate mystérieux

#2 Le 30/08/2009, à 21:21

Re : Wifi BCM4318 : bit rate mystérieux

#3 Le 30/08/2009, à 23:06

Re : Wifi BCM4318 : bit rate mystérieux

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