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#1 Le 31/08/2014, à 17:56

cyr_b

wifi très capricieux

Bonjour. depuis 3 jours, mon ordinateur n'arrive pas toujours à bien capter le wifi : cela change assez souvent : lorsque je ping un site j'obtiens rarement du 100% de paquets transmis, et souvent je suis à 0% !

exemple : au moment même :

ping 213.95.41.11 -c5
PING 213.95.41.11 (213.95.41.11) 56(84) bytes of data.
64 bytes from 213.95.41.11: icmp_req=1 ttl=53 time=207 ms
64 bytes from 213.95.41.11: icmp_req=2 ttl=53 time=327 ms
64 bytes from 213.95.41.11: icmp_req=3 ttl=53 time=347 ms
64 bytes from 213.95.41.11: icmp_req=4 ttl=53 time=169 ms

--- 213.95.41.11 ping statistics ---
5 packets transmitted, 4 received, 20% packet loss, time 4004ms
rtt min/avg/max/mdev = 169.555/262.858/347.005/76.009 ms

et le temps de faire un copier coller et de relancer le ping :

ping 213.95.41.11 -c5
PING 213.95.41.11 (213.95.41.11) 56(84) bytes of data.

--- 213.95.41.11 ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4030ms

encore le temps d'un copier-collé et :

ping google -c5
PING google.home.network (127.0.53.53) 56(84) bytes of data.
64 bytes from 127.0.53.53: icmp_req=1 ttl=64 time=0.021 ms
64 bytes from 127.0.53.53: icmp_req=2 ttl=64 time=0.030 ms
64 bytes from 127.0.53.53: icmp_req=3 ttl=64 time=0.026 ms
64 bytes from 127.0.53.53: icmp_req=4 ttl=64 time=0.022 ms
64 bytes from 127.0.53.53: icmp_req=5 ttl=64 time=0.025 ms

--- google.home.network ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 30577ms
rtt min/avg/max/mdev = 0.021/0.024/0.030/0.007 ms

puis

ping 213.95.41.11 -c5
PING 213.95.41.11 (213.95.41.11) 56(84) bytes of data.
64 bytes from 213.95.41.11: icmp_req=2 ttl=53 time=1009 ms
64 bytes from 213.95.41.11: icmp_req=5 ttl=53 time=1739 ms

--- 213.95.41.11 ping statistics ---
5 packets transmitted, 2 received, 60% packet loss, time 4023ms
rtt min/avg/max/mdev = 1009.988/1374.905/1739.823/364.919 ms, pipe 2

J'en arrive à me poser la question de : "est-ce que ce ne serait pas un problème materiel."

Enfin, voilà le max d'info que je peux donner :

cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.5 LTS"
uname -r -m
3.13.0-35-generic i686
lsusb 
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
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:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 061: ID 8087:07da Intel Corp. 
Bus 001 Device 003: ID 1bcf:288e Sunplus Innovation Technology Inc. 
Bus 002 Device 003: ID 08ff:168b AuthenTec, Inc. 
lspci 
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
01:00.0 System peripheral: Ricoh Co Ltd PCIe SDXC/MMC Host Controller (rev 07)
02:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)
sudo lshw -C network
*-network               
       description: Ethernet interface
       produit: 82579V Gigabit Network Connection
       fabriquant: Intel Corporation
       identifiant matériel: 19
       information bus: pci@0000:00:19.0
       nom logique: eth0
       version: 04
       numéro de série: e8:e0:b7:f0:9a:5f
       taille: 1Gbit/s
       capacité: 1Gbit/s
       bits: 32 bits
       horloge: 33MHz
       fonctionnalités: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k duplex=full firmware=0.13-4 ip=10.0.0.3 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       ressources: irq:42 mémoire:e0600000-e061ffff mémoire:e063b000-e063bfff portE/S:2080(taille=32)
  *-network
       description: Interface réseau sans fil
       produit: Centrino Wireless-N 2230
       fabriquant: Intel Corporation
       identifiant matériel: 0
       information bus: pci@0000:02:00.0
       nom logique: wlan0
       version: c4
       numéro de série: 68:5d:43:91:39:80
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-35-generic firmware=18.168.6.1 ip=10.0.0.4 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
lsmod
Module                  Size  Used by
ctr                    13025  1 
ccm                    17596  1 
coretemp               13352  0 
nvram                  14070  0 
uvcvideo               72275  0 
videobuf2_core         39510  1 uvcvideo
videodev              108952  2 uvcvideo,videobuf2_core
snd_hda_codec_hdmi     45939  1 
videobuf2_vmalloc      13048  1 uvcvideo
videobuf2_memops       13170  1 videobuf2_vmalloc
snd_hda_codec_realtek    59921  1 
btusb                  27671  0 
joydev                 17299  0 
rfcomm                 59026  12 
snd_hda_intel          43398  3 
bnep                   19107  2 
snd_hda_codec         169779  3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
bluetooth             356727  24 btusb,rfcomm,bnep
parport_pc             32114  0 
snd_hwdep              13276  1 snd_hda_codec
snd_pcm                90501  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
ppdev                  17423  0 
snd_seq_midi           13132  0 
binfmt_misc            13172  1 
arc4                   12509  2 
iwldvm                221597  0 
snd_rawmidi            25198  1 snd_seq_midi
mac80211              564446  1 iwldvm
psmouse                97578  0 
snd_seq_midi_event     14475  1 snd_seq_midi
iwlwifi               157434  1 iwldvm
i915                  733074  4 
snd_seq                55716  2 snd_seq_midi,snd_seq_midi_event
toshiba_acpi           18382  0 
snd_timer              28971  2 snd_pcm,snd_seq
sparse_keymap          13658  1 toshiba_acpi
snd_seq_device         14137  3 snd_seq_midi,snd_rawmidi,snd_seq
mac_hid                13077  0 
wmi                    18827  1 toshiba_acpi
serio_raw              13230  0 
drm_kms_helper         47561  1 i915
mei_me                 18234  0 
cfg80211              423921  3 iwldvm,mac80211,iwlwifi
drm                   249595  5 i915,drm_kms_helper
lpc_ich                16987  0 
intel_rst              12770  0 
snd                    61383  17 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq_midi,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
mei                    71468  1 mei_me
toshiba_bluetooth      12748  0 
i2c_algo_bit           13316  1 i915
soundcore              12600  1 snd
video                  19330  1 i915
snd_page_alloc         18398  2 snd_hda_intel,snd_pcm
lp                     13359  0 
parport                40945  3 parport_pc,ppdev,lp
e1000e                225784  0 
ahci                   25703  3 
sdhci_pci              18609  0 
libahci                31395  1 ahci
sdhci                  38093  1 sdhci_pci
ptp                    18488  1 e1000e
pps_core               18768  1 ptp
 iwconfig 
wlan0     IEEE 802.11bgn  ESSID:"Echo"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 44:32:C8:CF:77:20   
          Bit Rate=54 Mb/s   Tx-Power=16 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=70/70  Signal level=-34 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:62  Invalid misc:63   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.
ifconfig
eth0      Link encap:Ethernet  HWaddr e8:e0:b7:f0:9a:5f  
          inet adr:10.0.0.3  Bcast:10.0.0.255  Masque:255.255.255.0
          adr inet6: fe80::eae0:b7ff:fef0:9a5f/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:11282 erreurs:0 :0 overruns:0 frame:0
          TX packets:10305 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:9282646 (9.2 MB) Octets transmis:1621730 (1.6 MB)
          Interruption:20 Mémoire:e0600000-e0620000 

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:65536  Metric:1
          Packets reçus:2720 erreurs:0 :0 overruns:0 frame:0
          TX packets:2720 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0 
          Octets reçus:245441 (245.4 KB) Octets transmis:245441 (245.4 KB)

wlan0     Link encap:Ethernet  HWaddr 68:5d:43:91:39:80  
          inet adr:10.0.0.4  Bcast:10.0.0.255  Masque:255.255.255.0
          adr inet6: fe80::6a5d:43ff:fe91:3980/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:3915 erreurs:0 :0 overruns:0 frame:0
          TX packets:3983 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:1779624 (1.7 MB) Octets transmis:643189 (643.1 KB)
sudo iwlist scan

$La liste est trop longue! j'arrive pas à tout copier!$

                    IE: Unknown: 2A0104
                    IE: Unknown: 2D1A8E1117FFFF000001000000000000000000000000000000000000
                    IE: Unknown: 3D1606050500000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B05020058127A
                    IE: Unknown: DD07000C4303000000
          Cell 07 - Address: 46:32:C8:CF:77:21
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=67/70  Signal level=-43 dBm  
                    Encryption key:on
                    ESSID:"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000001f8661501d
                    Extra: Last beacon: 1340ms ago
                    IE: Unknown: 000C000000000000000000000000
                    IE: Unknown: 010882848B9624B0486C
                    IE: Unknown: 030101
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32048C129860
                    IE: Unknown: 2D1ABD181BFFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D1601081500000000000000000000000000000000000000
                    IE: Unknown: DD090010180200001C0000
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
          Cell 08 - Address: 5A:23:8C:42:6A:C6
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=54/70  Signal level=-56 dBm  
                    Encryption key:on
                    ESSID:"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000441c365b41
                    Extra: Last beacon: 27596ms ago
                    IE: Unknown: 000C000000000000000000000000
                    IE: Unknown: 010882848B9624B0486C
                    IE: Unknown: 030101
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32048C129860
                    IE: Unknown: 2D1ABD181BFFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D1601081100000000000000000000000000000000000000
                    IE: Unknown: DD090010180200001C0000
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
          Cell 09 - Address: C6:A4:62:F8:CE:B0
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=29/70  Signal level=-81 dBm  
                    Encryption key:off
                    ESSID:"xfinitywifi"
                    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
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000679ae5022e
                    Extra: Last beacon: 928ms ago
                    IE: Unknown: 000B7866696E69747977696669
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030106
                    IE: Unknown: 32048C98B060
                    IE: Unknown: 0706555320010B14
                    IE: Unknown: 050400010002
                    IE: Unknown: 2A0104
                    IE: Unknown: 2D1A0C0017FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606000500000000000000000000000000000000000000
                    IE: Unknown: 7F0101
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B05030045127A
                    IE: Unknown: DD07000C4303000000
          Cell 10 - Address: 22:73:55:8D:B9:70
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=37/70  Signal level=-73 dBm  
                    Encryption key:on
                    ESSID:""
                    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
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000679a841ba5
                    Extra: Last beacon: 868ms ago
                    IE: Unknown: 0000
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030106
                    IE: Unknown: 32048C98B060
                    IE: Unknown: 0706555320010B14
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0104
                    IE: Unknown: 2D1A8E1117FFFF000001000000000000000000000000000000000000
                    IE: Unknown: 3D1606050500000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B05020058127A
                    IE: Unknown: DD07000C4303000000
          Cell 11 - Address: 8C:7F:3B:44:A8:00
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"HOME1876"
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000679c708a26
                    Extra: Last beacon: 12ms ago
                    IE: Unknown: 0008484F4D4531383736
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1A7C181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1601081100000000000000000000000000000000000000
                    IE: Unknown: DD090010180201F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 12 - Address: 06:1D:D1:5B:F2:A0
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:off
                    ESSID:"xfinitywifi"
                    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
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000679adec733
                    Extra: Last beacon: 1532ms ago
                    IE: Unknown: 000B7866696E69747977696669
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030101
                    IE: Unknown: 32048C98B060
                    IE: Unknown: 0706555320010B14
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0104
                    IE: Unknown: 2D1A0C0017FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1601000500000000000000000000000000000000000000
                    IE: Unknown: 7F0101
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B050300AC127A
                    IE: Unknown: DD07000C4303000000
          Cell 13 - Address: 88:F7:C7:67:AB:67
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=33/70  Signal level=-77 dBm  
                    Encryption key:on
                    ESSID:"HOME-AB67"
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000002350505187
                    Extra: Last beacon: 1512ms ago
                    IE: Unknown: 0009484F4D452D41423637
                    IE: Unknown: 010882848B9624B0486C
                    IE: Unknown: 030101
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32048C129860
                    IE: Unknown: 2D1ABD181BFFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D1601081500000000000000000000000000000000000000
                    IE: Unknown: DD180050F204104A00011010440001021049000600372A000120
                    IE: Unknown: DD090010180201001C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
          Cell 14 - Address: 8A:F7:C7:67:AB:68
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=34/70  Signal level=-76 dBm  
                    Encryption key:on
                    ESSID:"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000002350505a43
                    Extra: Last beacon: 1508ms ago
                    IE: Unknown: 000C000000000000000000000000
                    IE: Unknown: 010882848B9624B0486C
                    IE: Unknown: 030101
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32048C129860
                    IE: Unknown: 2D1ABD181BFFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D1601081500000000000000000000000000000000000000
                    IE: Unknown: DD090010180200001C0000
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
          Cell 15 - Address: 46:32:C8:D2:DF:39
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=37/70  Signal level=-73 dBm  
                    Encryption key:on
                    ESSID:"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000441e4040b9
                    Extra: Last beacon: 1500ms ago
                    IE: Unknown: 000C000000000000000000000000
                    IE: Unknown: 010882848B9624B0486C
                    IE: Unknown: 030101
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32048C129860
                    IE: Unknown: 2D1ABD181BFFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D1601081100000000000000000000000000000000000000
                    IE: Unknown: DD090010180200001C0000
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
          Cell 16 - Address: 02:1D:D1:5B:F2:A0
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=32/70  Signal level=-78 dBm  
                    Encryption key:on
                    ESSID:""
                    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
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000679ae1db99
                    Extra: Last beacon: 1332ms ago
                    IE: Unknown: 0000
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030101
                    IE: Unknown: 32048C98B060
                    IE: Unknown: 0706555320010B14
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0104
                    IE: Unknown: 2D1A0C0017FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1601000500000000000000000000000000000000000000
                    IE: Unknown: 7F0101
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B050300AC127A
                    IE: Unknown: DD07000C4303000000
          Cell 17 - Address: 60:C3:97:02:08:09
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=35/70  Signal level=-75 dBm  
                    Encryption key:on
                    ESSID:"2WIRE064"
                    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
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000002841eaa6a84
                    Extra: Last beacon: 1076ms ago
                    IE: Unknown: 00083257495245303634
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 05040001002C
                    IE: Unknown: 0706555320010B1B
                    IE: Unknown: 2A0102
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32043048606C
          Cell 18 - Address: AC:5D:10:96:C1:69
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"2WIRE993"
                    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
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000679a2e2f5a
                    Extra: Last beacon: 1072ms ago
                    IE: Unknown: 00083257495245393933
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 050400010018
                    IE: Unknown: 0706555320010B1B
                    IE: Unknown: 2A0102
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32043048606C
          Cell 19 - Address: 84:1B:5E:DA:10:18
                    Channel:8
                    Frequency:2.447 GHz (Channel 8)
                    Quality=35/70  Signal level=-75 dBm  
                    Encryption key:on
                    ESSID:"NETGEAR80"
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000679ca7611f
                    Extra: Last beacon: 12ms ago
                    IE: Unknown: 00094E4554474541523830
                    IE: Unknown: 010882840B162430486C
                    IE: Unknown: 030108
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AF0181FFF00000000000000000000000000000000000000000000
                    IE: Unknown: 3D1608080000000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD890050F204104A0001101044000102103B0001031047001060BBF38F98B3E0B25E251674916766DE1021000D4E4554474541522C20496E632E1023000A574E44523334303076321024000A574E44523334303076321042000230311054000800060050F20400011011000A574E4452333430307632100800020004103C0001031049000600372A000120
                    IE: Unknown: DD090010180200F0040000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 20 - Address: C0:83:0A:F4:65:61
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=46/70  Signal level=-64 dBm  
                    Encryption key:on
                    ESSID:"2WIRE768"
                    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
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000679a5be793
                    Extra: Last beacon: 12ms ago
                    IE: Unknown: 00083257495245373638
                    IE: Unknown: 010882848B0C12961824
                    IE: Unknown: 03010B
                    IE: Unknown: 0706555320010B1B
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
          Cell 21 - Address: 78:96:84:08:A2:40
                    Channel:10
                    Frequency:2.457 GHz (Channel 10)
                    Quality=34/70  Signal level=-76 dBm  
                    Encryption key:on
                    ESSID:"Jackson "
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000009933385183
                    Extra: Last beacon: 664ms ago
                    IE: Unknown: 00084A61636B736F6E20
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010A
                    IE: Unknown: 050400030100
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1A7C181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160A081500000000000000000000000000000000000000
                    IE: Unknown: DD090010180202F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 22 - Address: 08:86:3B:FC:2D:2A
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=32/70  Signal level=-78 dBm  
                    Encryption key:on
                    ESSID:"belkin.d2a"
                    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
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000679ece77e6
                    Extra: Last beacon: 12ms ago
                    IE: Unknown: 000A62656C6B696E2E643261
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1A6C181BFF00000000000000000000000000000000000000000000
                    IE: Unknown: 3D160B081100000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD090010180200100C0000
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: DD9D0050F204104A00011010440001021041000100103B000103104700100000000000000001000308863BFC2D2A1021001242656C6B696E20436F72706F726174696F6E1023000946394B31303031763410240007342E30302E30361042000E31323132313747423432393439381054000800060050F20400011011001B42656C6B696E20576972656C65737320526F757465722857464129100800020080

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.
cat  /etc/network/interfaces
auto lo
iface lo inet loopback
nm-tool

NetworkManager Tool

State: connected (global)

- Device: wlan0  [Auto Echo] ---------------------------------------------------
  Type:              802.11 WiFi
  Driver:            iwlwifi
  State:             connected
  Default:           no
  HW Address:        68:5D:43:91:39:80

  Capabilities:
    Speed:           54 Mb/s

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

  Wireless Access Points (* = current AP)
    *Echo:           Infra, 44:32:C8:CF:77:20, Freq 2412 MHz, Rate 54 Mb/s, Strength 92 WPA WPA2
    ATT4w357Pi:      Infra, 94:62:69:20:5F:F0, Freq 2462 MHz, Rate 54 Mb/s, Strength 44 WPA WPA2
    HOME-6AC5:       Infra, 58:23:8C:42:6A:C5, Freq 2412 MHz, Rate 54 Mb/s, Strength 77 WPA WPA2
    HOME1876:        Infra, 8C:7F:3B:44:A8:00, Freq 2412 MHz, Rate 54 Mb/s, Strength 77 WPA WPA2
    2WIRE057:        Infra, 64:0F:28:17:53:91, Freq 2412 MHz, Rate 54 Mb/s, Strength 75 WPA WPA2
    Wireless90:      Infra, 20:4E:7F:99:1B:52, Freq 2427 MHz, Rate 54 Mb/s, Strength 64 WPA2
    2roses:          Infra, 20:73:55:8D:B9:70, Freq 2437 MHz, Rate 54 Mb/s, Strength 60 WPA WPA2
    2WIRE768:        Infra, C0:83:0A:F4:65:61, Freq 2462 MHz, Rate 54 Mb/s, Strength 57 WPA WPA2
    Stafford H207:   Infra, 1C:1B:68:D6:BE:40, Freq 2437 MHz, Rate 54 Mb/s, Strength 52 WPA WPA2
    2WIRE531:        Infra, 00:1B:5B:0E:4F:A1, Freq 2437 MHz, Rate 54 Mb/s, Strength 52 WPA WPA2
    2WIRE604:        Infra, 00:26:50:3C:14:D9, Freq 2437 MHz, Rate 54 Mb/s, Strength 45 WPA WPA2
    2WIRE993:        Infra, AC:5D:10:96:C1:69, Freq 2437 MHz, Rate 54 Mb/s, Strength 45 WPA WPA2
    Jackson :        Infra, 78:96:84:08:A2:40, Freq 2457 MHz, Rate 54 Mb/s, Strength 45 WPA WPA2
    2WIRE323:        Infra, B8:E6:25:66:28:61, Freq 2412 MHz, Rate 54 Mb/s, Strength 42 WPA WPA2
    NETGEAR80:       Infra, 84:1B:5E:DA:10:18, Freq 2447 MHz, Rate 54 Mb/s, Strength 42 WPA2
    2WIRE917:        Infra, 00:1E:C7:F7:A7:41, Freq 2457 MHz, Rate 54 Mb/s, Strength 40 WPA WPA2
    2WIRE013:        Infra, 28:16:2E:6A:DC:69, Freq 2462 MHz, Rate 54 Mb/s, Strength 40 WPA WPA2
    2WIRE816:        Infra, 00:23:51:DD:E9:21, Freq 2437 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
    HOME-6C62:       Infra, 0C:F8:93:B1:6C:60, Freq 2462 MHz, Rate 54 Mb/s, Strength 34 WPA WPA2
    xfinitywifi:     Infra, 26:73:55:8D:B9:70, Freq 2437 MHz, Rate 54 Mb/s, Strength 60
    xfinitywifi:     Infra, 06:1D:D1:5B:F2:A0, Freq 2412 MHz, Rate 54 Mb/s, Strength 44
    xfinitywifi:     Infra, 06:F8:93:B1:6C:60, Freq 2462 MHz, Rate 54 Mb/s, Strength 34
    xfinitywifi:     Infra, 06:1D:D3:24:23:20, Freq 2462 MHz, Rate 54 Mb/s, Strength 29
    xfinitywifi:     Infra, C6:A4:62:F8:CE:B0, Freq 2437 MHz, Rate 54 Mb/s, Strength 40
    2WIRE064:        Infra, 60:C3:97:02:08:09, Freq 2437 MHz, Rate 54 Mb/s, Strength 42 WPA WPA2
    HOME-AB67:       Infra, 88:F7:C7:67:AB:67, Freq 2412 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
    belkin.d2a:      Infra, 08:86:3B:FC:2D:2A, Freq 2462 MHz, Rate 54 Mb/s, Strength 37 WPA2
    2WIRE440:        Infra, 3C:EA:4F:D4:34:B1, Freq 2437 MHz, Rate 54 Mb/s, Strength 50 WPA WPA2
    HOME-CEB2:       Infra, CC:A4:62:F8:CE:B0, Freq 2437 MHz, Rate 54 Mb/s, Strength 47 WPA WPA2
    2WIRE171:        Infra, 00:1E:C7:D5:C9:79, Freq 2437 MHz, Rate 54 Mb/s, Strength 37 WPA WPA2
    HOME-69D2:       Infra, 00:1D:D1:89:69:D0, Freq 2462 MHz, Rate 54 Mb/s, Strength 35 WPA WPA2

  IPv4 Settings:
    Address:         10.0.0.4
    Prefix:          24 (255.255.255.0)
    Gateway:         10.0.0.1

    DNS:             75.75.76.76
    DNS:             75.75.75.75


- Device: eth0  [Connexion filaire 1] ------------------------------------------
  Type:              Wired
  Driver:            e1000e
  State:             connected
  Default:           yes
  HW Address:        E8:E0:B7:F0:9A:5F

  Capabilities:
    Carrier Detect:  yes
    Speed:           1000 Mb/s

  Wired Properties
    Carrier:         on

  IPv4 Settings:
    Address:         10.0.0.3
    Prefix:          24 (255.255.255.0)
    Gateway:         10.0.0.1

    DNS:             75.75.76.76
    DNS:             75.75.75.75
sudo rfkill list
0: Toshiba Bluetooth: Bluetooth
	Soft blocked: yes
	Hard blocked: no
1: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
393: hci0: Bluetooth
	Soft blocked: yes
	Hard blocked: no

voilà. si quelqu'un peut m'aider, ce ne serait pas de refus.
Merci.

Hors ligne

#2 Le 01/09/2014, à 23:19

Compte anonymisé

Re : wifi très capricieux

Bonsoir,
Tu peux essayer de faire :

sudo gedit /etc/modprobe.d/options.conf

Ajoute la ligne suivante dans l’éditeur qui c'est ouvert :

options iwlwifi  11n_disable=1

Sauve, ferme, redémarre et vois si c'est mieux...

#3 Le 03/09/2014, à 01:50

cyr_b

Re : wifi très capricieux

Il semblerait qu'il y ait du mieux, mais je ne préfère pas m'avancer trop vite.

Je vais tester pendant quelques jours, et je vous tiens au courant.

alx : tu peux me dire en quoi correspond

cette commande?

options iwlwifi  11n_disable=1

Hors ligne

#4 Le 03/09/2014, à 04:42

Oni_Shadow

Re : wifi très capricieux

cela désactive la norme 'n' du wifi, qui est instable sur certaines cartes. En gros sur sacrifie de la rapidité au profit de la stabilité. De toute façon la norme g (précédant la n ) te permet d'avoir des débits suffisant pour la plupart des applications.


Rouillé

Hors ligne