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[Résolu]Connexion Wi-fi : débit ultra-lent

Bonjour à tous,
j'ai pas mal parcouru la docs et différents topics avant de me résoudre à faire ce post,
voici mon soucis : depuis que j'ai écrasé Vista sur le laptop de ma femme pour installer Kubuntu10.04, sa connexion Wi-fi est extrèmement lente (plusieurs minutes pour transférer un fichier de 4.5 Mo.). N'étant moi même pas depuis très longtemps sur Ubuntu, je n'arrive vraiment pas à trouver de solution, si quelqu'un à une idée pouvant m'éclairer, votre aide sera la bienvenue, et je vous en remercie d'avance.
Voici donc, comme préciser dans les consignes du topic, le résultat de différentes commandes :

lydie@VENUSIA:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.04
DISTRIB_CODENAME=lucid
DISTRIB_DESCRIPTION="Ubuntu 10.04 LTS"

lydie@VENUSIA:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
05:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)
09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5764M Gigabit Ethernet PCIe (rev 10)

lydie@VENUSIA:~$ lspci -nn |grep -i net
05:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
09:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5764M Gigabit Ethernet PCIe [14e4:1684] (rev 10)

lydie@VENUSIA:~$ sudo lshw -C network
  *-network               
       description: Wireless interface
       product: BCM4312 802.11b/g
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: eth1
       version: 01
       serial: 00:23:4e:04:30:16
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=5.60.48.36 ip=192.168.1.12 latency=0 multicast=yes wireless=IEEE 802.11bg
       resources: irq:17 memory:c0400000-c0403fff
  *-network
       description: Ethernet interface
       product: NetXtreme BCM5764M Gigabit Ethernet PCIe
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:09:00.0
       logical name: eth0
       version: 10
       serial: 00:23:8b:45:c3:a1
       capacity: 1GB/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.102 firmware=sb v2.18 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:30 memory:c0c00000-c0c0ffff

lydie@VENUSIA:~$ lsmod
Module                  Size  Used by
michael_mic             1732  8 
arc4                    1153  4 
ppdev                   5259  0 
snd_hda_codec_realtek   203168  1 
fbcon                  35102  71 
tileblit                2031  1 fbcon
font                    7557  1 fbcon
bitblit                 4707  1 fbcon
softcursor              1189  1 bitblit
vga16fb                11385  0 
lib80211_crypt_tkip     7596  0 
vgastate                8961  1 vga16fb
snd_hda_intel          21877  2 
snd_hda_codec          74201  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep               5412  1 snd_hda_codec
snd_pcm_oss            35308  0 
snd_mixer_oss          13746  1 snd_pcm_oss
snd_pcm                70662  3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_seq_dummy           1338  0 
snd_seq_oss            26726  0 
snd_seq_midi            4557  0 
joydev                  8708  0 
snd_rawmidi            19056  1 snd_seq_midi
snd_seq_midi_event      6003  2 snd_seq_oss,snd_seq_midi
snd_seq                47263  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer              19098  2 snd_pcm,snd_seq
snd_seq_device          5700  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
wl                   1959598  0 
i915                  282354  2 
drm_kms_helper         29297  1 i915
uvcvideo               56990  0 
lib80211                5046  2 lib80211_crypt_tkip,wl
videodev               34361  1 uvcvideo
v4l1_compat            13251  2 uvcvideo,videodev
snd                    54148  16 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
drm                   162471  3 i915,drm_kms_helper
psmouse                63245  0 
serio_raw               3978  0 
lp                      7028  0 
soundcore               6620  1 snd
intel_agp              24177  2 i915
snd_page_alloc          7076  2 snd_hda_intel,snd_pcm
agpgart                31724  2 drm,intel_agp
i2c_algo_bit            5028  1 i915
video                  17375  1 i915
output                  1871  1 video
parport                32635  2 ppdev,lp
usbhid                 36110  0 
hid                    67032  1 usbhid
tg3                   109292  0 
ahci                   32008  3

lydie@VENUSIA:~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

eth1      IEEE 802.11  Access Point: Not-Associated   
          Link Quality:4  Signal level:192  Noise level:174
          Rx invalid nwid:0  invalid crypt:115  invalid misc:0

lydie@VENUSIA:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:23:8b:45:c3:a1  
          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:17 

eth1      Link encap:Ethernet  HWaddr 00:23:4e:04:30:16  
          inet adr:192.168.1.12  Bcast:192.168.1.255  Masque:255.255.255.0
          adr inet6: fe80::223:4eff:fe04:3016/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:8754 erreurs:0 :0 overruns:0 frame:5082
          TX packets:7720 errors:6 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:9002808 (9.0 MB) Octets transmis:1174803 (1.1 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:68 erreurs:0 :0 overruns:0 frame:0
          TX packets:68 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0 
          Octets reçus:3960 (3.9 KB) Octets transmis:3960 (3.9 KB)

lydie@VENUSIA:~$ sudo iwlist scan
lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

eth1      Scan completed :
          Cell 01 - Address: 00:1F:9F:F8:88:F5
                    ESSID:"Bbox-F83DE3"
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality:4/5  Signal level:-63 dBm  Noise level:-82 dBm
                    IE: Unknown: DD810050F204104A0001101044000102103B00010310470010A2A3498DD9135C1B806778FAD330A0031021000754484F4D534F4E1023000A54686F6D736F6E20544710240003373837104200093039323941485050561054000800060050F20400011011000D54686F6D736F6E20544737383710080002008410570001001041000100
                    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 02 - Address: 00:17:33:B2:C6:CD
                    ESSID:"Neuf WiFi"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality:1/5  Signal level:-87 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
          Cell 03 - Address: 00:17:33:B2:C6:CE
                    ESSID:"SFR WiFi Public"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality:1/5  Signal level:-88 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
          Cell 04 - Address: 00:17:33:B2:C6:CC
                    ESSID:"NEUF_C6C8"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality:1/5  Signal level:-86 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

lydie@VENUSIA:~$ uname -r -m
2.6.32-22-generic i686

lydie@VENUSIA:~$ cat /etc/network/interfaces
auto lo
iface lo inet loopback

lydie@VENUSIA:~$ nm-tool

NetworkManager Tool

State: connected

- Device: eth1  [Nouvelle connexion sans fil] ----------------------------------
  Type:              802.11 WiFi
  Driver:            wl
  State:             connected
  Default:           yes
  HW Address:        00:23:4E:04:30:16

  Capabilities:
    Speed:           54 Mb/s

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

  Wireless Access Points (* = current AP)
    SFR WiFi Public: Infra, 00:25:15:54:43:BE, Freq 2462 MHz, Rate 54 Mb/s, Strength 20
    Neuf WiFi:       Infra, 00:25:15:54:43:BD, Freq 2462 MHz, Rate 54 Mb/s, Strength 20
    NEUF_43B8:       Infra, 00:25:15:54:43:BC, Freq 2462 MHz, Rate 0 Mb/s, Strength 20 WPA
    *Bbox-F83DE3:    Infra, 00:1F:9F:F8:88:F5, Freq 2412 MHz, Rate 0 Mb/s, Strength 80 WPA

  IPv4 Settings:
    Address:         192.168.1.12
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.1.254

    DNS:             192.168.1.254


- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            tg3
  State:             unavailable
  Default:           no
  HW Address:        00:23:8B:45:C3:A1

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

Voilà donc pour l'ensemble des commandes demandées en instruction du topic, en espérant qu'au moins l'un d'entre vous aura une réponse à mon problème. En attendant, je continue moi même mes recherches.
Merci à tous.

Dernière modification par golgoth42 (Le 15/05/2010, à 12:41)

Compte anonymisé

Re : [Résolu]Connexion Wi-fi : débit ultra-lent

Bon, ben j'ai trouvé dans un ou deux sujets cette commande :

sudo apt-get install linux-firmware-nonfree

que je n'avait pas vu avant, et là, ça va, débit correct.
Même un problème de son qui avait perdu de la puissance depuis l'install est réglé, et je sais pas trop si ça viens de toutes mes bidouilles ou si cette commande est une solution miracle !!!
Un petit edit du permeir post pour passer en résolu.