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#1 Le 30/10/2008, à 11:10

Dushmol

Signal Wifi très bas (~1-20%)

Bonjour tout le monde, j'ai un problème avec le wifi, mon signal oscille autour de 5-6% avec des pics a 20%.
J'utilise une carte Wifi PCI, j'espère que les resultats des commandes ci-dessous vous en diront plus sur model.
Ce problème est apparu hier apres tout un tas d'erreurs dans les mises à jours, J'ai du réinstaller compiz ainsi que mes pilotes graphiques et depuis j'ai ce signal très faible, est-ce lié? hmm
Avant j'avais 98%, ce qui est toujours le cas sur ma PSP, qui détecte environ 100% du signal en ce moment même.

cat /etc/lsb-release

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu 8.04.1"
lsusb

Bus 006 Device 004: ID 0bda:0111 Realtek Semiconductor Corp.
Bus 006 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 004: ID 04f2:0111 Chicony Electronics Co., Ltd KU-9908 Keyboard
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 002: ID 147a:e00d Formosa Industrial Computing, Inc.
Bus 004 Device 001: ID 0000:0000
lspci

00:00.0 Host bridge: ATI Technologies Inc Unknown device 7930
00:02.0 PCI bridge: ATI Technologies Inc Unknown device 7933
00:06.0 PCI bridge: ATI Technologies Inc Unknown device 7936
00:12.0 SATA controller: ATI Technologies Inc SB600 Non-Raid-5 SATA
00:13.0 USB Controller: ATI Technologies Inc SB600 USB (OHCI0)
00:13.1 USB Controller: ATI Technologies Inc SB600 USB (OHCI1)
00:13.2 USB Controller: ATI Technologies Inc SB600 USB (OHCI2)
00:13.3 USB Controller: ATI Technologies Inc SB600 USB (OHCI3)
00:13.4 USB Controller: ATI Technologies Inc SB600 USB (OHCI4)
00:13.5 USB Controller: ATI Technologies Inc SB600 USB Controller (EHCI)
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 14)
00:14.1 IDE interface: ATI Technologies Inc SB600 IDE
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia
00:14.3 ISA bridge: ATI Technologies Inc SB600 PCI to LPC Bridge
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
01:00.0 VGA compatible controller: ATI Technologies Inc RV610 video device [Radeon HD 2400 PRO]
01:00.1 Audio device: ATI Technologies Inc RV610 audio device [Radeon HD 2400 PRO]
02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit Ethernet Controller (rev 12)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8185 IEEE 802.11a/b/g Wireless LAN Controller (rev 20)
03:02.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link)
sudo lshw -C network

*-network
       description: Ethernet interface
       product: 88E8056 PCI-E Gigabit Ethernet Controller
       vendor: Marvell Technology Group Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 12
       serial: 00:19:db:d5:4a:dc
       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=sky2 driverversion=1.20 firmware=N/A latency=0 link=no module=sky2 multicast=yes port=twisted pair
  *-network
       description: Wireless interface
       product: RTL-8185 IEEE 802.11a/b/g Wireless LAN Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wmaster0
       version: 20
       serial: 00:1d:0f:b7:78:84
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list logical ethernet physical wireless
       configuration: broadcast=yes driver=rtl8180 ip=192.168.1.69 latency=64 maxlatency=64 mingnt=32 module=rtl8180 multicast=yes wireless=IEEE 802.11bg
lsmod

Module                  Size  Used by
ipv6                  267780  18
af_packet              23812  4
snd_rtctimer            4640  1
binfmt_misc            12808  1
rfcomm                 41744  2
l2cap                  25728  13 rfcomm
bluetooth              61156  4 rfcomm,l2cap
tun                    12672  0
vboxdrv                76736  0
nfsd                  228848  13
auth_rpcgss            43424  1 nfsd
exportfs                6016  1 nfsd
ppdev                  10372  0
acpi_cpufreq           10796  0
cpufreq_userspace       5284  0
cpufreq_powersave       2688  0
cpufreq_stats           7104  0
cpufreq_ondemand        9740  4
freq_table              5536  3 acpi_cpufreq,cpufreq_stats,cpufreq_ondemand
cpufreq_conservative     8712  0
container               5632  0
video                  19856  0
output                  4736  1 video
sbs                    15112  0
sbshc                   7680  1 sbs
dock                   11280  0
battery                14212  0
nfs                   262540  0
lockd                  67720  3 nfsd,nfs
nfs_acl                 4608  2 nfsd,nfs
sunrpc                185500  11 nfsd,auth_rpcgss,nfs,lockd,nfs_acl
iptable_filter          3840  0
ip_tables              14820  1 iptable_filter
x_tables               16132  1 ip_tables
aes_i586               33536  0
dm_crypt               15364  0
dm_mod                 62660  1 dm_crypt
ac                      6916  0
ndiswrapper           192920  0
sbp2                   24072  0
lp                     12324  0
snd_seq_dummy           4868  0
snd_seq_oss            35584  0
snd_hda_intel         344856  7
snd_seq_midi            9376  0
snd_pcm_oss            42144  0
arc4                    2944  2
snd_mixer_oss          17920  2 snd_pcm_oss
joydev                 13120  0
ecb                     4480  2
blkcipher               8324  1 ecb
snd_rawmidi            25760  1 snd_seq_midi
snd_seq_midi_event      8320  2 snd_seq_oss,snd_seq_midi
snd_pcm                78596  3 snd_hda_intel,snd_pcm_oss
snd_seq                54224  7 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer              24836  4 snd_rtctimer,snd_pcm,snd_seq
snd_page_alloc         11400  2 snd_hda_intel,snd_pcm
snd_hwdep              10500  1 snd_hda_intel
rtl8180                32256  0
snd_seq_device          9612  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
fglrx                1721908  28
usbhid                 32128  0
usb_storage            73664  0
lbm_cw_mac80211       233204  1 rtl8180
led_class               6020  0
libusual               19108  1 usb_storage
sky2                   47620  0
hid                    38784  1 usbhid
parport_pc             36260  1
ati_agp                 9996  0
i2c_piix4               9612  0
wmi_acer                9644  0
snd                    56996  23 snd_rtctimer,snd_seq_dummy,snd_seq_oss,snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_rawmidi,snd_pcm,snd_seq,snd_timer,snd_hwdep,snd_seq_device
lbm_cw_cfg80211        36448  2 rtl8180,lbm_cw_mac80211
agpgart                34760  2 fglrx,ati_agp
i2c_core               24832  1 i2c_piix4
serio_raw               7940  0
parport                37832  3 ppdev,lp,parport_pc
button                  9232  0
shpchp                 34452  0
pci_hotplug            30880  1 shpchp
evdev                  13056  5
eeprom_93cx6            3200  1 rtl8180
soundcore               8800  2 snd
psmouse                40336  0
pcspkr                  4224  0
ext3                  136840  2
jbd                    48404  1 ext3
mbcache                 9600  1 ext3
ide_cd                 32544  0
cdrom                  37408  1 ide_cd
pata_acpi               8320  0
pata_atiixp             8960  0
ata_generic             8324  0
sg                     36880  0
sd_mod                 30720  4
ohci1394               33584  0
floppy                 59588  0
ieee1394               93752  2 sbp2,ohci1394
ehci_hcd               37900  0
atiixp                  5648  0 [permanent]
ohci_hcd               26640  0
ide_core              113996  2 ide_cd,atiixp
ahci                   28548  3
libata                159344  4 pata_acpi,pata_atiixp,ata_generic,ahci
scsi_mod              151436  5 sbp2,usb_storage,sg,sd_mod,libata
usbcore               146412  7 ndiswrapper,usbhid,usb_storage,libusual,ehci_hcd,ohci_hcd
thermal                16796  0
processor              37384  2 acpi_cpufreq,thermal
fan                     5636  0
fbcon                  42912  0
tileblit                3456  1 fbcon
font                    9472  1 fbcon
bitblit                 6784  1 fbcon
softcursor              3072  1 bitblit
fuse                   50708  1
iwconfig

lo        no wireless extensions.

eth0      no wireless extensions.

wmaster0  no wireless extensions.

wlan1     IEEE 802.11bg  ESSID:"SpeedTouchAB79C5"
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:14:7F:D9:73:2B
          Bit Rate=54 Mb/s   Tx-Power=27 dBm
          Retry min limit:7   RTS thr:off   Fragment thr=2352 B
          Power Management:off
          Link Quality=6/100  Signal level:15/65
          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 00:19:db:d5:4a:dc
          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:19

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:378 erreurs:0 :0 overruns:0 frame:0
          TX packets:378 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0
          Octets reçus:22340 (21.8 KB) Octets transmis:22340 (21.8 KB)

wlan1     Link encap:Ethernet  HWaddr 00:1d:0f:b7:78:84
          inet adr:192.168.1.69  Bcast:192.168.1.255  Masque:255.255.255.0
          adr inet6: fe80::21d:fff:feb7:7884/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:15687 erreurs:0 :0 overruns:0 frame:0
          TX packets:15392 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000
          Octets reçus:9085300 (8.6 MB) Octets transmis:4029380 (3.8 MB)

wmaster0  Link encap:UNSPEC  HWaddr 00-1D-0F-B7-78-84-00-00-00-00-00-00-00-00-00-00
          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)
iwlist scan

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

wmaster0  Interface doesn't support scanning.

wlan1     Scan completed :
          Cell 01 - Address: 00:14:7F:D9:73:2B
                    ESSID:"SpeedTouchAB79C5"
                    Mode:Master
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=8/100  Signal level:15/65
                    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
                    Extra:tsf=0000000c1754b3d8
                    Extra: Last beacon: 12ms ago
uname -r -m

2.6.24-21-generic i686
cat  /etc/network/interfaces

auto lo
iface lo inet loopback
address 127.0.0.1
netmask 255.0.0.0
nm-tool

NetworkManager Tool

State: connected

- Device: wlan1 ----------------------------------------------------------------
  NM Path:           /org/freedesktop/NetworkManager/Devices/wlan1
  Type:              802.11 Wireless
  Driver:            rtl8180
  Active:            yes
  HW Address:        00:1D:0F:B7:78:84

  Capabilities:
    Supported:       yes
    Speed:           54 Mb/s

  Wireless Settings
    Scanning:        yes
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Networks (* = Current Network)
    *SpeedTouchAB79C5: Infrastructure Mode, Freq 2.412 MHz, Rate 62 Mb/s, Strength 15%, Encrypted (WEP)

  IP Settings:
    IP Address:      192.168.1.69
    Subnet Mask:     255.255.255.0
    Broadcast:       192.168.1.255
    Gateway:         192.168.1.254
    Primary DNS:     192.168.1.254
    Secondary DNS:   0.0.0.0


- Device: eth0 ----------------------------------------------------------------
  NM Path:           /org/freedesktop/NetworkManager/Devices/eth0
  Type:              Wired
  Driver:            sky2
  Active:            no
  HW Address:        00:19:DB:D5:4A:DC

  Capabilities:
    Supported:       yes
    Carrier Detect:  yes

  Wired Settings
    Hardware Link:   no

Pfiouu voilà big_smile
Merci d'avance.

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