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#1 Le 07/08/2009, à 03:06
- bilbo-le-hobbit
wifi rtl8187 faiblarde
Salut, ça fait plusieurs jours que j'essaie d'installer un dongle omenex à base de rtl8187, même si elle était reconnu par l'ordi, je n'arrivais toujours pas à capter le moindre réseau avec. j'ai tenté de l'installer sur mon portable, ça marche... mais faut voir comment !
J'explique. Je destinais ce dongle à l'ordi fixe dans la chambre. sans succès. le l'installe sur le portable du salon, ça marche. Il faut dire que la livebox est à 3 mètres de là. Problème : le signal est à 15%, alors que d'habitude, évidemment, la wifi intégrée du portable atteint les 100%. Je comprends mieux pourquoi je ne captais rien de la chambre (qui est loin, loin.... 7 mètres de la box, une paille)
D'où vient le pb de cette portée si faible ? Est-ce que la clé a un défaut, ou est-ce un problème logiciel ?
J'ai suivi le tuto (rtl8187) de la doc, je tourne sous jaunty (32bits pour le fixe, 64 pour le portable)
voici les infos techniques du portable
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=9.04
DISTRIB_CODENAME=jaunty
DISTRIB_DESCRIPTION="Ubuntu 9.04"
lsusb
Bus 002 Device 009: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 002: ID 08ff:1600 AuthenTec, Inc. AES1600
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 002: ID 046d:c019 Logitech, Inc. Optical Tilt Wheel Mouse
Bus 006 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 001 Device 002: ID 174f:5a31 Syntek
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 0b05:1712 ASUSTek Computer, Inc. BT-183 Bluetooth 2.0+EDR adapter
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
lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation GeForce 9500M GS (rev a1)
02:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit Ethernet Adapter (rev b0)
03:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
09:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
09:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
09:01.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
09:01.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)
*-network
description: Ethernet interface
product: L1 Gigabit Ethernet Adapter
vendor: Attansic Technology Corp.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: b0
serial: 00:1e:8c:ed:2e:73
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=atl1 driverversion=2.1.3 firmware=N/A latency=0 link=no module=atl1 multicast=yes port=twisted pair
*-network
description: Wireless interface
product: PRO/Wireless 4965 AG or AGN [Kedron] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wmaster0
version: 61
serial: 00:1d:e0:49:d0:c7
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=iwlagn latency=0 module=iwlagn multicast=yes wireless=IEEE 802.11abgn
*-network:0 DISABLED
description: Ethernet interface
physical id: 2
logical name: vboxnet0
serial: 0a:00:27:00:00:00
capabilities: ethernet physical
configuration: broadcast=yes multicast=yes
*-network:1 DISABLED
description: Ethernet interface
physical id: 3
logical name: pan0
serial: e6:6e:89:23:4d:93
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes
*-network:2
description: Wireless interface
physical id: 4
logical name: wlan1
serial: 00:e0:60:09:03:75
capabilities: ethernet physical wireless
configuration: broadcast=yes ip=192.168.1.19 multicast=yes wireless=IEEE 802.11bg
lsmod
Module Size Used by
aes_x86_64 16384 1
aes_generic 36264 1 aes_x86_64
binfmt_misc 18572 1
ppdev 16904 0
bridge 63904 0
stp 11140 1 bridge
bnep 22912 2
vboxnetadp 109356 0
vboxnetflt 116972 0
vboxdrv 1721612 1 vboxnetflt
input_polldev 12688 0
nfsd 285728 17
auth_rpcgss 52512 1 nfsd
exportfs 13440 1 nfsd
nfs 304848 0
lockd 83924 2 nfsd,nfs
nfs_acl 11776 2 nfsd,nfs
sunrpc 227304 15 nfsd,auth_rpcgss,nfs,lockd,nfs_acl
vfat 21120 0
fat 65592 1 vfat
joydev 20864 0
lp 19588 0
parport 49584 2 ppdev,lp
snd_hda_intel 557492 2
snd_pcm_oss 52352 0
snd_mixer_oss 24960 1 snd_pcm_oss
snd_pcm 99464 2 snd_hda_intel,snd_pcm_oss
arc4 10240 4
snd_seq_dummy 11524 0
ecb 11392 4
snd_seq_oss 41984 0
snd_seq_midi 15744 0
snd_rawmidi 33920 1 snd_seq_midi
snd_seq_midi_event 16512 2 snd_seq_oss,snd_seq_midi
snd_seq 66272 7 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 34064 2 snd_pcm,snd_seq
snd_seq_device 16276 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
iwlagn 114820 0
iwlcore 106496 1 iwlagn
snd 78920 14 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
rtl8187 54400 0
video 29204 6
uvcvideo 69640 0
psmouse 64028 0
compat_ioctl32 18304 1 uvcvideo
videodev 45184 2 uvcvideo,compat_ioctl32
mac80211 251528 3 iwlagn,iwlcore,rtl8187
soundcore 16800 1 snd
pcspkr 11136 0
sdhci_pci 16896 0
sdhci 27396 1 sdhci_pci
serio_raw 14468 0
output 11648 1 video
btusb 21784 2
intel_agp 39408 0
usbhid 47040 0
v4l1_compat 23940 2 uvcvideo,videodev
asus_laptop 27740 0
led_class 13064 2 iwlcore,asus_laptop
iTCO_wdt 21712 0
iTCO_vendor_support 12420 1 iTCO_wdt
eeprom_93cx6 10624 1 rtl8187
snd_page_alloc 18704 2 snd_hda_intel,snd_pcm
cfg80211 43680 4 iwlagn,iwlcore,rtl8187,mac80211
nvidia 8123768 52
ohci1394 42164 0
ieee1394 108288 1 ohci1394
atl1 45448 0
mii 14464 1 atl1
fbcon 49792 0
tileblit 11264 1 fbcon
font 17024 1 fbcon
bitblit 14464 1 fbcon
softcursor 10368 1 bitblit
iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11abgn ESSID:"xxxxxxxxxxxx"
Mode:Managed Frequency:2.437 GHz Access Point: 00:10:C6:CA:7A:52
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Power Management:off
Link Quality=100/100 Signal level:-51 dBm Noise level=-95 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
vboxnet0 no wireless extensions.
pan0 no wireless extensions.
wmaster1 no wireless extensions.
wlan1 IEEE 802.11bg ESSID:"xxxxxxxxxxx"
Mode:Managed Frequency:2.437 GHz Access Point: 00:10:C6:CA:7A:52
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=14/100 Signal level:65/65
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
ifconfig
eth0 Link encap:Ethernet HWaddr 00:1e:8c:ed:2e:73
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)
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:41788 erreurs:0 :0 overruns:0 frame:0
TX packets:41788 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
Octets reçus:10009471 (10.0 MB) Octets transmis:10009471 (10.0 MB)
wlan0 Link encap:Ethernet HWaddr 00:1d:e0:49:d0:c7
inet adr:192.168.1.10 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::21d:e0ff:fe49:d0c7/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:1044 erreurs:0 :0 overruns:0 frame:0
TX packets:1277 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:565972 (565.9 KB) Octets transmis:411184 (411.1 KB)
wlan1 Link encap:Ethernet HWaddr 00:e0:60:09:03:75
inet adr:192.168.1.19 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::2e0:60ff:fe09:375/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:958 erreurs:0 :0 overruns:0 frame:0
TX packets:954 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:711479 (711.4 KB) Octets transmis:188810 (188.8 KB)
wmaster0 Link encap:UNSPEC HWaddr 00-1D-E0-49-D0-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)
wmaster1 Link encap:UNSPEC HWaddr 00-E0-60-09-03-75-00-00-00-00-00-00-00-00-00-00
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
lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
wmaster0 Interface doesn't support scanning.
wlan0 Scan completed :
Cell 01 - Address: 00:10:C6:CA:7A:52
ESSID:"xxxxxxxx"
Mode:Master
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=86/100 Signal level:-47 dBm Noise level=-127 dBm
Encryption key:on
IE: Unknown: 000C57616E61646F6F5F34636135
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: Unknown: 32040C121860
IE: Unknown: DD060010180200F0
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
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=000000007bbe2187
Extra: Last beacon: 188ms ago
Cell 02 - Address: 00:19:15:16:3D:37
ESSID:"yyyyyyyy"
Mode:Master
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=71/100 Signal level:-63 dBm Noise level=-127 dBm
Encryption key:on
IE: Unknown: 000C414C4943452D313633443243
IE: Unknown: 010882848B962430486C
IE: Unknown: 03010B
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: Unknown: 32040C121860
IE: Unknown: DD06001018020000
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=000000d01abe6185
Extra: Last beacon: 836ms ago
vboxnet0 Interface doesn't support scanning.
pan0 Interface doesn't support scanning.
wmaster1 Interface doesn't support scanning.
wlan1 Scan completed :
Cell 01 - Address: 00:10:C6:CA:7A:52
ESSID:"xxxxxxxx"
Mode:Master
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=15/100 Signal level:65/65
Encryption key:on
IE: Unknown: 000C57616E61646F6F5F34636135
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: Unknown: 32040C121860
IE: Unknown: DD060010180200F0
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
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=000000007bdd6187
Extra: Last beacon: 1996ms ago
Cell 02 - Address: 00:19:15:16:3D:37
ESSID:"yyyyyyyy"
Mode:Master
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=14/100 Signal level:65/65
Encryption key:on
IE: Unknown: 000C414C4943452D313633443243
IE: Unknown: 010882848B962430486C
IE: Unknown: 03010B
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: Unknown: 32040C121860
IE: Unknown: DD06001018020000
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=000000d01af20d6d
Extra: Last beacon: 1304ms ago
cat /etc/network/interfaces
auto lo
iface lo inet loopback
nm-tool
NetworkManager Tool
State: connected
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: atl1
State: unavailable
Default: no
HW Address: 00:1E:8C:ED:2E:73
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
- Device: wlan0 [Auto xxxxxxxx] -------------------------------------------
Type: 802.11 WiFi
Driver: iwlagn
State: connected
Default: yes
HW Address: 00:1D:E0:49:D0:C7
Capabilities:
Speed: 54 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
*xxxxxxxx: Infra, 00:10:C6:CA:7A:52, Freq 2437 MHz, Rate 54 Mb/s, Strength 100 WPA
yyyyyyyy: Infra, 00:19:15:16:3D:37, Freq 2462 MHz, Rate 54 Mb/s, Strength 67 WEP
IPv4 Settings:
Address: 192.168.1.10
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
- Device: wlan1 [Auto xxxxxxxx] -------------------------------------------
Type: 802.11 WiFi
Driver: rtl8187
State: connected
Default: no
HW Address: 00:E0:60:09:03:75
Capabilities:
Speed: 54 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
*xxxxxxxx: Infra, 00:10:C6:CA:7A:52, Freq 2437 MHz, Rate 54 Mb/s, Strength 15 WPA
yyyyyyyy: Infra, 00:19:15:16:3D:37, Freq 2462 MHz, Rate 54 Mb/s, Strength 14 WEP
IPv4 Settings:
Address: 192.168.1.19
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
uname -r -m
2.6.28-14-generic x86_64Bonne lecture! 
Hors ligne
#2 Le 07/08/2009, à 10:32
- Qid
Re : wifi rtl8187 faiblarde
bah t'a pas de bol ...
avant la 9.04 j'avais pas dutout de wifi
mais depuis, ma carte (rtl8187B je crois)
reconnue sans rien faire
est meme plus performante
sous ubuntu que sous windows ...
je suis desolé je vois pas quoi te proposer
"GNU/Linux c'est que du bon mais M$ Windows ce n'est pas si mal"
Référent technique Ubuntu d'un Groupe d'Utilisateur du Libre
plus d'info sur mon profil
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