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floriann

Broadcom 4313 : problème de débit

Bonjour,

J'ai récemment acheté un Samsung NP305U, qui est équipé d'une carte Wi-Fi Broadcom 4313.

Malheureusement, je fais face à des débits relativement faibles lorsque j'utilise le Wi-Fi. À titre d'exemple, dans les mêmes conditions de tests, un transfert de fichier en local entre ma Freebox et mon PC est près de 10 fois moins rapide sur Ubuntu que sous Windows 7.

J'ai effectué quelques recherches sur le net et testé différentes procédures (notamment les changements de pilotes), mais je n'ai pas jusqu'à présent pas eu de très grand succès (si ce n'est de constater que les cartes Broadcom étaient visiblement assez capricieuses sous Linux).

Je me tourne donc vers vous en espérant que vous puissiez avoir des idées pour améliorer la situation.

En vous remerciant d'avance pour votre aide.

/etc/lsb-release

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="florian@florian-305U1A:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS"

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 003 Device 002: ID 13ee:0003 MosArt Optical Mouse
Bus 003 Device 003: ID 0a5c:219c B Corp.
Bus 002 Device 002: ID 2232:1008 

lspci

00:00.0 Host bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Wrestler [Radeon HD 6320]
00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI Wrestler HDMI Audio [Radeon HD 6250/6310]
00:04.0 PCI bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Port
00:11.0 SATA controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode]
00:12.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller (rev 42)
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40)
00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 LPC host controller (rev 40)
00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge (rev 40)
00:14.5 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:15.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB700/SB800/SB900 PCI to PCI bridge (PCIE port 0)
00:15.1 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB700/SB800/SB900 PCI to PCI bridge (PCIE port 1)
00:15.2 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB900 PCI to PCI bridge (PCIE port 2)
00:15.3 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB900 PCI to PCI bridge (PCIE port 3)
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6
00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5
00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7
03:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)

lspci -nn | grep -i net

03:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
05:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 06)

lspci -k

00:00.0 Host bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Complex
    Subsystem: Samsung Electronics Co Ltd Device c600
00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Wrestler [Radeon HD 6320]
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: fglrx_pci
    Kernel modules: fglrx_updates, radeon
00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI Wrestler HDMI Audio [Radeon HD 6250/6310]
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd-hda-intel
00:04.0 PCI bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Port
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:11.0 SATA controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode]
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: ahci
00:12.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: ohci_hcd
00:12.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: ehci_hcd
00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: ohci_hcd
00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: ehci_hcd
00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller (rev 42)
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: piix4_smbus
    Kernel modules: sp5100_tco, i2c-piix4
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40)
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd-hda-intel
00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 LPC host controller (rev 40)
    Subsystem: Samsung Electronics Co Ltd Device c600
00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge (rev 40)
00:14.5 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: ohci_hcd
00:15.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB700/SB800/SB900 PCI to PCI bridge (PCIE port 0)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:15.1 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB700/SB800/SB900 PCI to PCI bridge (PCIE port 1)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:15.2 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB900 PCI to PCI bridge (PCIE port 2)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:15.3 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB900 PCI to PCI bridge (PCIE port 3)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3
    Kernel driver in use: k10temp
    Kernel modules: k10temp
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6
00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5
00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7
03:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
    Subsystem: Wistron NeWeb Corp. Device 051a
    Kernel driver in use: wl
    Kernel modules: wl, bcma, brcmsmac
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
    Subsystem: Samsung Electronics Co Ltd Device c600
    Kernel driver in use: r8169
    Kernel modules: r8169

lshw -C network

  *-network              
       description: Interface réseau sans fil
       produit: BCM4313 802.11b/g/n Wireless LAN Controller
       fabriquant: Broadcom Corporation
       identifiant matériel: 0
       information bus: pci@0000:03:00.0
       nom logique: eth1
       version: 01
       numéro de série: 30:14:4a:1b:92:0a
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=5.100.82.38 ip=192.168.1.2 latency=0 multicast=yes wireless=IEEE 802.11
       ressources: irq:16 mémoire:fea00000-fea03fff
  *-network
       description: Ethernet interface
       produit: RTL8111/8168B PCI Express Gigabit Ethernet controller
       fabriquant: Realtek Semiconductor Co., Ltd.
       identifiant matériel: 0
       information bus: pci@0000:05:00.0
       nom logique: eth0
       version: 06
       numéro de série: e8:03:9a:07:52:08
       taille: 10Mbit/s
       capacité: 1Gbit/s
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       ressources: irq:40 portE/S:e000(taille=256) mémoire:d0004000-d0004fff mémoire:d0000000-d0003fff

lsmod

Module                  Size  Used by
vesafb                 13844  1
joydev                 17693  0
lib80211_crypt_tkip    17390  0
wl                   2568210  0
uvcvideo               72627  0
videodev               98259  1 uvcvideo
sp5100_tco             13791  0
psmouse                97443  0
v4l2_compat_ioctl32    17128  1 videodev
rfcomm                 47604  12
k10temp                13166  0
bnep                   18281  2
serio_raw              13211  0
parport_pc             32866  0
ppdev                  17113  0
btusb                  18288  2
snd_hda_codec_realtek   224173  1
lib80211               14381  2 lib80211_crypt_tkip,wl
i2c_piix4              13301  0
snd_hda_codec_hdmi     32474  1
bluetooth             180104  23 rfcomm,bnep,btusb
snd_hda_intel          33773  5
snd_hda_codec         127706  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep              13668  1 snd_hda_codec
snd_pcm                97188  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi           13324  0
snd_rawmidi            30748  1 snd_seq_midi
snd_seq_midi_event     14899  1 snd_seq_midi
snd_seq                61896  2 snd_seq_midi,snd_seq_midi_event
snd_timer              29990  2 snd_pcm,snd_seq
snd_seq_device         14540  3 snd_seq_midi,snd_rawmidi,snd_seq
fglrx                3263886  166
video                  19596  0
snd                    78855  20 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
mac_hid                13253  0
soundcore              15091  1 snd
snd_page_alloc         18529  2 snd_hda_intel,snd_pcm
lp                     17799  0
parport                46562  3 parport_pc,ppdev,lp
usbhid                 47199  0
hid                    99559  1 usbhid
r8169                  62099  0

iwconfig

lo        no wireless extensions.

eth1      IEEE 802.11  Access Point: Not-Associated  
          Link Quality:5  Signal level:235  Noise level:165
          Rx invalid nwid:0  invalid crypt:0  invalid misc:0

eth0      no wireless extensions.

ifconfig

eth0      Link encap:Ethernet  HWaddr e8:03:9a:07:52:08 
          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:40 Adresse de base:0x8000

eth1      Link encap:Ethernet  HWaddr 30:14:4a:1b:92:0a 
          inet adr:192.168.1.2  Bcast:192.168.1.255  Masque:255.255.255.0
          adr inet6: 2a01:e35:2ed2:2f10:3214:4aff:fe1b:920a/64 Scope:Global
          adr inet6: fe80::3214:4aff:fe1b:920a/64 Scope:Lien
          adr inet6: 2a01:e35:2ed2:2f10:b57b:4e6a:8ace:927e/64 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:4037 erreurs:0 :0 overruns:0 frame:130232
          TX packets:3076 errors:18 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000
          Octets reçus:3779327 (3.7 MB) Octets transmis:382179 (382.1 KB)
          Interruption:16

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:722 erreurs:0 :0 overruns:0 frame:0
          TX packets:722 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0
          Octets reçus:61556 (61.5 KB) Octets transmis:61556 (61.5 KB)

iwlist scan

lo        Interface doesn't support scanning.

eth1      Scan completed :
          Cell 01 - Address: F4:CA:E5:BE:4F:F8
                    ESSID:"fbx"
                    Mode:Managed
                    Frequency:2.427 GHz (Channel 4)
                    Quality:5/5  Signal level:-18 dBm  Noise level:-87 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 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
          Cell 02 - Address: F4:CA:E5:BE:4F:F9
                    ESSID:"FreeWifi"
                    Mode:Managed
                    Frequency=2.427 GHz (Channel 4)
                    Quality:5/5  Signal level:-17 dBm  Noise level:-87 dBm
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 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
          Cell 03 - Address: F4:CA:E5:BE:4F:FA
                    ESSID:"FreeWifi_secure"
                    Mode:Managed
                    Frequency:2.427 GHz (Channel 4)
                    Quality:5/5  Signal level:-17 dBm  Noise level:-87 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : 802.1x
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 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
          Cell 04 - Address: 00:14:F2:FC:06:10
                    ESSID:"\x00"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality:1/5  Signal level:-80 dBm  Noise level:-92 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
          Cell 05 - Address: 00:16:CF:AE:26:85
                    ESSID:"Livebox-A718"
                    Mode:Managed
                    Frequency=2.442 GHz (Channel 7)
                    Quality:1/5  Signal level:-80 dBm  Noise level:-92 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    Encryption key:on
                    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
          Cell 06 - Address: 36:87:24:79:2A:61
                    ESSID:""
                    Mode:Managed
                    Frequency=2.452 GHz (Channel 9)
                    Quality:2/5  Signal level:-74 dBm  Noise level:-92 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Encryption key:on
                    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
          Cell 07 - Address: 36:87:24:79:2A:62
                    ESSID:"FreeWifi"
                    Mode:Managed
                    Frequency:2.452 GHz (Channel 9)
                    Quality:2/5  Signal level:-73 dBm  Noise level:-92 dBm
                    Encryption key:off
                    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
          Cell 08 - Address: 8A:A1:D7:2B:FE:8F
                    ESSID:"SFR WiFi Mobile"
                    Mode:Managed
                    Frequency=2.462 GHz (Channel 11)
                    Quality:2/5  Signal level:-76 dBm  Noise level:-92 dBm
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : 802.1x
                    Encryption key:on
                    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
          Cell 09 - Address: E0:A1:D7:2B:FE:8C
                    ESSID:"1023"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality:2/5  Signal level:-75 dBm  Noise level:-92 dBm
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    Encryption key:on
                    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
          Cell 10 - Address: 8A:A1:D7:2B:FE:8D
                    ESSID:"SFR WiFi Public"
                    Mode:Managed
                    Frequency=2.462 GHz (Channel 11)
                    Quality:2/5  Signal level:-73 dBm  Noise level:-92 dBm
                    Encryption key:off
                    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

eth0      Interface doesn't support scanning.

uname -r -m

3.2.0-32-generic x86_64

/etc/network/interfaces

auto lo
iface lo inet loopback

nm-tool

NetworkManager Tool

State: connected (global)

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        E8:03:9A:07:52:08

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off


- Device: eth1  [fbx] -------------------------------------------------
  Type:              802.11 WiFi
  Driver:            wl
  State:             connected
  Default:           yes
  HW Address:        30:14:4A:1B:92:0A

  Capabilities:
    Speed:           72 Mb/s

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

  Wireless Access Points (* = current AP)
    FreeWifi_secure: Infra, F4:CA:E5:BE:4F:FA, Freq 2427 MHz, Rate 0 Mb/s, Strength 100 WPA2 Enterprise
    FreeWifi:        Infra, F4:CA:E5:BE:4F:F9, Freq 2427 MHz, Rate 54 Mb/s, Strength 100
    *fbx:   		 Infra, F4:CA:E5:BE:4F:F8, Freq 2427 MHz, Rate 54 Mb/s, Strength 100 WPA2
    Livebox-A718:    Infra, 00:16:CF:AE:26:85, Freq 2442 MHz, Rate 54 Mb/s, Strength 39 WPA
    1023:            Infra, E0:A1:D7:2B:FE:8C, Freq 2462 MHz, Rate 0 Mb/s, Strength 47 WPA
    TELE2BOX_913A:   Infra, 00:1D:19:AD:C4:27, Freq 2422 MHz, Rate 54 Mb/s, Strength 34 WEP
    SFR WiFi Public: Infra, 8A:A1:D7:2B:FE:8D, Freq 2462 MHz, Rate 54 Mb/s, Strength 40
    SFR WiFi Mobile: Infra, 8A:A1:D7:2B:FE:8F, Freq 2462 MHz, Rate 54 Mb/s, Strength 40 WPA2 Enterprise
    Livebox-131E:    Infra, E8:F1:B0:CF:13:22, Freq 2412 MHz, Rate 0 Mb/s, Strength 32 WPA WPA2
    FreeWifi:        Infra, 36:87:24:79:2A:62, Freq 2452 MHz, Rate 54 Mb/s, Strength 45

  IPv4 Settings:
    Address:         192.168.1.2
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.1.254

    DNS:             192.168.1.254

  IPv6 Settings:
    Address:         2a01:e35:2ed2:2f10:b57b:4e6a:8ace:927e
    Prefix:          64
    Gateway:         fe80::f6ca:e5ff:fe51:bf2a

    Address:         2a01:e35:2ed2:2f10:3214:4aff:fe1b:920a
    Prefix:          64
    Gateway:         fe80::f6ca:e5ff:fe51:bf2a

    Address:         fe80::3214:4aff:fe1b:920a
    Prefix:          64
    Gateway:         fe80::f6ca:e5ff:fe51:bf2a

    DNS:             2a01:e00::2
    DNS:             2a01:e00::1

rfkill list

0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
1: brcmwl-0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
Ubuntu 12.04.1 LTS"

tcharlss

Re : Broadcom 4313 : problème de débit

Bonjour,

Désolé, je n'ai pas de réponse à ta question, par contre j'ai le même portable sous ubuntu 12.10 et le wifi ne marche pas du tout.
As-tu fait une manip spéciale pour le faire fonctionner ?
Toutes les solutions indiquées dans la doc, sur le forum ou ailleurs sur le net se sont révélées infructueuses et se contredisent parfois.
Utilises-tu le pilote libre ou proprio ? Et si c'est le libre, quelle version ?

floriann

Re : Broadcom 4313 : problème de débit

Ça fonctionnait après avoir installé Ubuntu (avec la 12.04), que ce soit avec les pilotes libres ou avec les pilotes propriétaires.

Personne n'a d'idées concernant ce problème ? Je suis actuellement à 6ko/s sur du transfert local, malgré une vitesse de connexion de 72Mb/s.

Edit : par contre, j'ai remarqué (et c'est peut-être la raison de ton problème), que la désactivation du bluetooth rend le Wifi totalement non opérationnel.

Dernière modification par floriann (Le 27/10/2012, à 23:29)