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#1 Le 06/01/2015, à 20:40

mako

Plus de wifi et connection filiaire instable avec Ubuntu 14.04 LTS

Bonsoir,

J'ai lancé un autre post resté sans réponse sur le même sujet, mais il concernait la mise en service d'une ligne internet qui n'est pas la mienne (je travaillerai dessus plus tard quand je serai sur place et si j'ai des réponses).
Depuis quelques jours mon PC, un Lenovo G580 ne capte plus du tout la wifi chez moi. Par connexion filiaire, j'ai internet, mais ça coupe environ chaque minute. Il faut alors que je débranche et rebranche le câble pour peut-être retrouver internet. En résumé, c'est l'horreur.
Sans un internet sûr, je suis handicapé au quotidien.

Je vais donner le résultat des commandes que j'ai trouvées sur le post d'introduction de la section :

cat /etc/lsb-release
résultat :

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.1 LTS"

lsusb
résultat :

Bus 002 Device 003: ID 04f2:b2e1 Chicony Electronics Co., Ltd 
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 003: ID 0489:e032 Foxconn / Hon Hai 
Bus 001 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 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 003 Device 002: ID 04f2:0111 Chicony Electronics Co., Ltd KU-9908 Keyboard
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

lspci
résultat :

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)
00:1a.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.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (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)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
01:00.0 Ethernet controller: Qualcomm Atheros AR8162 Fast Ethernet (rev 08)
02:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01)

lspci -nn | grep -i net
résultat :

01:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8162 Fast Ethernet [1969:1090] (rev 08)
02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)

lspci -k
résultat :

00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
	Subsystem: Lenovo Device 3977
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
	Subsystem: Lenovo Device 3977
	Kernel driver in use: i915
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
	Subsystem: Lenovo Device 3977
	Kernel driver in use: xhci_hcd
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
	Subsystem: Lenovo Device 3977
	Kernel driver in use: mei_me
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
	Subsystem: Lenovo Device 3977
	Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
	Subsystem: Lenovo Device 3977
	Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
	Kernel driver in use: pcieport
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
	Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
	Subsystem: Lenovo Device 3977
	Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
	Subsystem: Lenovo Device 3977
	Kernel driver in use: lpc_ich
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
	Subsystem: Lenovo Device 3977
	Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
	Subsystem: Lenovo Device 3977
01:00.0 Ethernet controller: Qualcomm Atheros AR8162 Fast Ethernet (rev 08)
	Subsystem: Lenovo Device 3979
	Kernel driver in use: alx
02:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01)
	Subsystem: Broadcom Corporation Device 0587
	Kernel driver in use: wl

sudo lshw -C network
résultat :

  *-network               
       description: Ethernet interface
       produit: AR8162 Fast Ethernet
       fabriquant: Qualcomm Atheros
       identifiant matériel: 0
       information bus: pci@0000:01:00.0
       nom logique: eth0
       version: 08
       numéro de série: b8:88:e3:80:45:7a
       taille: 100Mbit/s
       capacité: 100Mbit/s
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=alx duplex=full ip=192.168.0.10 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       ressources: irq:45 mémoire:e0500000-e053ffff portE/S:2000(taille=128)
  *-network
       description: Interface réseau sans fil
       produit: BCM4313 802.11bgn Wireless Network Adapter
       fabriquant: Broadcom Corporation
       identifiant matériel: 0
       information bus: pci@0000:02:00.0
       nom logique: wlan0
       version: 01
       numéro de série: c0:14:3d:c7:94:53
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.30.223.141 (r415941) latency=0 multicast=yes wireless=IEEE 802.11abg
       ressources: irq:17 mémoire:e0400000-e0403fff

lsmod
résultat :

Module                  Size  Used by
rfcomm                 69160  8 
bnep                   19624  2 
binfmt_misc            17468  1 
nls_iso8859_1          12713  1 
snd_hda_codec_hdmi     46368  1 
snd_hda_codec_conexant    57441  1 
snd_hda_intel          56451  3 
snd_hda_codec         192906  3 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel
snd_hwdep              13602  1 snd_hda_codec
rts5139               335409  0 
snd_pcm               102099  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
btusb                  32412  0 
bluetooth             391136  22 bnep,btusb,rfcomm
uvcvideo               80885  0 
videobuf2_vmalloc      13216  1 uvcvideo
videobuf2_memops       13362  1 videobuf2_vmalloc
videobuf2_core         40664  1 uvcvideo
videodev              134688  2 uvcvideo,videobuf2_core
snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
snd_seq_midi           13324  0 
snd_seq_midi_event     14899  1 snd_seq_midi
snd_rawmidi            30144  1 snd_seq_midi
intel_rapl             18773  0 
lib80211_crypt_tkip    17619  0 
x86_pkg_temp_thermal    14205  0 
intel_powerclamp       14705  0 
coretemp               13435  0 
kvm                   455785  0 
crct10dif_pclmul       14289  0 
crc32_pclmul           13113  0 
ghash_clmulni_intel    13216  0 
snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
wl                   4207846  0 
aesni_intel            55624  0 
aes_x86_64             17131  1 aesni_intel
lib80211               14381  2 wl,lib80211_crypt_tkip
lrw                    13286  1 aesni_intel
gf128mul               14951  1 lrw
glue_helper            13990  1 aesni_intel
ablk_helper            13597  1 aesni_intel
cryptd                 20359  3 ghash_clmulni_intel,aesni_intel,ablk_helper
joydev                 17381  0 
serio_raw              13462  0 
snd_timer              29482  2 snd_pcm,snd_seq
cfg80211              484040  1 wl
snd                    69322  17 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
i915                  784207  3 
mei_me                 18627  0 
soundcore              12680  1 snd
lpc_ich                21080  0 
drm_kms_helper         55071  1 i915
mei                    82276  1 mei_me
drm                   303102  4 i915,drm_kms_helper
i2c_algo_bit           13413  1 i915
ideapad_laptop         18216  0 
sparse_keymap          13948  1 ideapad_laptop
mac_hid                13205  0 
video                  19476  1 i915
parport_pc             32701  0 
ppdev                  17671  0 
lp                     17759  0 
parport                42348  3 lp,ppdev,parport_pc
hid_generic            12548  0 
usbhid                 52659  0 
hid                   106148  2 hid_generic,usbhid
psmouse               106714  0 
ahci                   25819  4 
alx                    32452  0 
libahci                32716  1 ahci
mdio                   13807  1 alx

iwconfig
résultat :

eth0      no wireless extensions.

lo        no wireless extensions.

wlan0     IEEE 802.11abg  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:on

ifconfig
résultat :

eth0      Link encap:Ethernet  HWaddr b8:88:e3:80:45:7a  
          inet adr:192.168.0.10  Bcast:192.168.0.255  Masque:255.255.255.0
          adr inet6: fe80::ba88:e3ff:fe80:457a/64 Scope:Lien
          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)
          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:65536  Metric:1
          Packets reçus:4927 erreurs:0 :0 overruns:0 frame:0
          TX packets:4927 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0 
          Octets reçus:523470 (523.4 KB) Octets transmis:523470 (523.4 KB)

wlan0     Link encap:Ethernet  HWaddr c0:14:3d:c7:94:53  
          adr inet6: fe80::c214:3dff:fec7:9453/64 Scope:Lien
          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 

sudo iwlist scan
résultat :

eth0      Interface doesn't support scanning.

lo        Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: 00:11:24:A7:D4:3A
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=51/70  Signal level=-59 dBm  
                    Encryption key:on
                    ESSID:"absolutelyfree"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 000E6162736F6C7574656C7966726565
                    IE: Unknown: 010482848B96
                    IE: Unknown: 030101
                    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: 32080C1218243048606C
                    IE: Unknown: DD0700039301030000
                    IE: Unknown: DD06001018020000
          Cell 02 - Address: D0:AE:EC:2B:6E:71
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=44/70  Signal level=-66 dBm  
                    Encryption key:on
                    ESSID:"maisondenous"
                    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=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 000C6D6169736F6E64656E6F7573
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    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
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
                    IE: Unknown: 2D1A0C101BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606000900000000000000000000000000000000000000
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD0A00037F04010000000000
                    IE: Unknown: 0706465220010D14
          Cell 03 - Address: 00:19:70:32:27:D6
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=44/70  Signal level=-66 dBm  
                    Encryption key:on
                    ESSID:"Livebox-c004"
                    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=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 000C4C697665626F782D63303034
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 03010B
                    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
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
                    IE: Unknown: 2D1A0C101BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160B000900000000000000000000000000000000000000
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD0A00037F04010000000000
                    IE: Unknown: 0706465220010D14
                    IE: Unknown: DD8B0050F204104A0001101044000102103B00010310470010000000000000100000000019703227D610210005536167656D1023000F4C697665626F78204654544820763210240007422E312E302E301042000F4C4B313030343044503239303635361054000800060050F20400011011000F4C697665626F782046545448207632100800020086103C000101
          Cell 04 - Address: F4:CA:E5:FE:FD:A9
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=42/70  Signal level=-68 dBm  
                    Encryption key:off
                    ESSID:"FreeWifi"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                              6 Mb/s; 9 Mb/s; 12 Mb/s
                    Bit Rates:18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 00084672656557696669
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 030101
                    IE: Unknown: 050401020000
                    IE: Unknown: 2A0104
                    IE: Unknown: 3205243048606C
                    IE: Unknown: 2D1AEC0003FFFFFF0001000000000000000100000000000000000000
                    IE: Unknown: 3D1601000400000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
          Cell 05 - Address: F4:CA:E5:FE:FD:A8
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=44/70  Signal level=-66 dBm  
                    Encryption key:on
                    ESSID:"Freebox-Cat"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                              6 Mb/s; 9 Mb/s; 12 Mb/s
                    Bit Rates:18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 000B46726565626F782D436174
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 030101
                    IE: Unknown: 050401020000
                    IE: Unknown: 2A0104
                    IE: Unknown: 3205243048606C
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2D1AEC0003FFFFFF0001000000000000000100000000000000000000
                    IE: Unknown: 3D1601000400000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
          Cell 06 - Address: F4:CA:E5:FE:FD:AA
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=35/70  Signal level=-75 dBm  
                    Encryption key:on
                    ESSID:"FreeWifi_secure"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                              6 Mb/s; 9 Mb/s; 12 Mb/s
                    Bit Rates:18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 000F46726565576966695F736563757265
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 030101
                    IE: Unknown: 050400020000
                    IE: Unknown: 2A0104
                    IE: Unknown: 3205243048606C
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : 802.1x
                    IE: Unknown: 2D1AEC0003FFFFFF0001000000000000000100000000000000000000
                    IE: Unknown: 3D1601000400000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
          Cell 07 - Address: 00:24:D4:CF:C4:FE
                    Channel:8
                    Frequency:2.447 GHz (Channel 8)
                    Quality=35/70  Signal level=-75 dBm  
                    Encryption key:on
                    ESSID:"FreeWifi_secure"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                              6 Mb/s; 9 Mb/s; 12 Mb/s
                    Bit Rates:18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 000F46726565576966695F736563757265
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 030108
                    IE: Unknown: 050400020000
                    IE: Unknown: 2A0104
                    IE: Unknown: 3205243048606C
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : 802.1x
                    IE: Unknown: 2D1AEC0003FFFFFF0001000000000000000100000000000000000000
                    IE: Unknown: 3D1608000400000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
          Cell 08 - Address: BE:5E:6F:A2:FC:85
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=33/70  Signal level=-77 dBm  
                    Encryption key:off
                    ESSID:"FreeWifi"
                    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=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 00084672656557696669
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 03010B
                    IE: Unknown: 32040C183060
                    IE: Unknown: 33082001020304050607
                    IE: Unknown: 33082105060708090A0B
                    IE: Unknown: 050400010006
                    IE: Unknown: 2A0104
                    IE: Unknown: 2D1A6E1017FFFF000001000000000000000000000000000000000000
                    IE: Unknown: 3D160B000000000000000000000000000000000000000000
                    IE: Unknown: 7F0101
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B0500002C127A
                    IE: Unknown: DD1E00904C336E1017FFFF000001000000000000000000000000000000000000
                    IE: Unknown: DD1A00904C340B000000000000000000000000000000000000000000
                    IE: Unknown: DD07000C4300000000
          Cell 09 - Address: 00:24:D4:CF:C4:FD
                    Channel:8
                    Frequency:2.447 GHz (Channel 8)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:off
                    ESSID:"FreeWifi"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                              6 Mb/s; 9 Mb/s; 12 Mb/s
                    Bit Rates:18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 00084672656557696669
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 030108
                    IE: Unknown: 050400020000
                    IE: Unknown: 2A0104
                    IE: Unknown: 3205243048606C
                    IE: Unknown: 2D1AEC0003FFFFFF0001000000000000000100000000000000000000
                    IE: Unknown: 3D1608000400000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
          Cell 10 - Address: BE:5E:6F:A2:FC:84
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"love"
                    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=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 00046C6F7665
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0104
                    IE: Unknown: 32040C183060
                    IE: Unknown: 2D1A6E1017FFFF000001000000000000000000000000000000000000
                    IE: Unknown: 3D160B000000000000000000000000000000000000000000
                    IE: Unknown: 3E0100
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 7F0101
                    IE: Unknown: DD07000C4300000000
                    IE: Unknown: DD1E00904C336E1017FFFF000001000000000000000000000000000000000000
                    IE: Unknown: DD1A00904C340B000000000000000000000000000000000000000000
          Cell 11 - Address: 24:95:04:71:0E:F4
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"SFR_0EF0"
                    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=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 00085346525F30454630
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AEC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606000000000000000000000000000000000000000000
                    IE: Unknown: DD870050F204104A0001101044000102103B00010310470010000000000000000000000000000000001021000B4E4236562D4658432D72301023000B4E4236562D4658432D72301024000B4E4236562D4658432D72301042000C3234393530343731304546301054000800060050F2040001101100085346525F30454630100800020084103C000101
                    IE: Unknown: DD090010180200F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 12 - Address: D0:AE:EC:7C:F2:B4
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=33/70  Signal level=-77 dBm  
                    Encryption key:on
                    ESSID:"Livebox-30a4"
                    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=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 000C4C697665626F782D33306134
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    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
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
                    IE: Unknown: 2D1A0C101BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606080800000000000000000000000000000000000000
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD0A00037F04010000000000
                    IE: Unknown: 0706465220010D14
                    IE: Unknown: DD8B0050F204104A0001101044000102103B0001031047001000000000000010000000D0AEEC7CF2B410210005536167656D1023000F4C697665626F78204654544820763210240007422E312E312E311042000F4C4B313333333744503334303434391054000800060050F20400011011000F4C697665626F782046545448207632100800020086103C000101
          Cell 13 - Address: 24:95:04:76:8D:9C
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=24/70  Signal level=-86 dBm  
                    Encryption key:on
                    ESSID:"la_ruche"
                    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=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 00086C615F7275636865
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030101
                    IE: Unknown: 050400030100
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AEC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1601001500000000000000000000000000000000000000
                    IE: Unknown: DD0E0050F204104A0001101044000102
                    IE: Unknown: DD090010180205F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 14 - Address: F4:CA:E5:BE:44:D0
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:on
                    ESSID:"Free_Fi"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                              6 Mb/s; 9 Mb/s; 12 Mb/s
                    Bit Rates:18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 100ms ago
                    IE: Unknown: 0007467265655F4669
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 03010B
                    IE: Unknown: 050400020000
                    IE: Unknown: 2A0104
                    IE: Unknown: 3205243048606C
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2D1A6C0003FFFFFF0001000000000000000100000000000000000000
                    IE: Unknown: 3D160B001300000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00

uname -r -m
résultat :

3.13.0-40-generic x86_64

cat  /etc/network/interfaces
résultat :

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

nm-tool
résultat :

NetworkManager Tool

State: connected (global)

- Device: wlan0 ----------------------------------------------------------------
  Type:              802.11 WiFi
  Driver:            wl
  State:             disconnected
  Default:           no
  HW Address:        C0:14:3D:C7:94:53

  Capabilities:

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

  Wireless Access Points 
    absolutelyfree:  Infra, 00:11:24:A7:D4:3A, Freq 2412 MHz, Rate 54 Mb/s, Strength 70 WPA2
    Livebox-c004:    Infra, 00:19:70:32:27:D6, Freq 2462 MHz, Rate 54 Mb/s, Strength 65 WPA WPA2
    FreeWifi_secure: Infra, F4:CA:E5:FE:FD:AA, Freq 2412 MHz, Rate 54 Mb/s, Strength 55 WPA2 Enterprise
    maisondenous:    Infra, D0:AE:EC:2B:6E:71, Freq 2437 MHz, Rate 54 Mb/s, Strength 55 WPA WPA2
    FreeWifi_secure: Infra, 00:24:D4:CF:C4:FE, Freq 2447 MHz, Rate 54 Mb/s, Strength 57 WPA2 Enterprise
    j0j0p4t0u:       Infra, 00:24:D4:CF:C4:FC, Freq 2447 MHz, Rate 54 Mb/s, Strength 54 WPA
    Freebox-Cat:     Infra, F4:CA:E5:FE:FD:A8, Freq 2412 MHz, Rate 54 Mb/s, Strength 54 WPA2
    love:            Infra, BE:5E:6F:A2:FC:84, Freq 2462 MHz, Rate 54 Mb/s, Strength 45 WPA
    Livebox-30a4:    Infra, D0:AE:EC:7C:F2:B4, Freq 2437 MHz, Rate 54 Mb/s, Strength 45 WPA WPA2
    Bbox-00FBFE1E:   Infra, DC:71:44:CD:A7:C8, Freq 2412 MHz, Rate 54 Mb/s, Strength 37 WPA WPA2
    FreeWifi:        Infra, F4:CA:E5:FE:FD:A9, Freq 2412 MHz, Rate 54 Mb/s, Strength 55
    FreeWifi:        Infra, 00:24:D4:CF:C4:FD, Freq 2447 MHz, Rate 54 Mb/s, Strength 55
    FreeWifi:        Infra, BE:5E:6F:A2:FC:85, Freq 2462 MHz, Rate 54 Mb/s, Strength 35
    FreeWifi_secure: Infra, F4:CA:E5:E5:70:BE, Freq 2427 MHz, Rate 54 Mb/s, Strength 37 WPA2 Enterprise
    FreeWifi:        Infra, F4:CA:E5:E5:70:BD, Freq 2427 MHz, Rate 54 Mb/s, Strength 30
    Free_Fi:         Infra, F4:CA:E5:BE:44:D0, Freq 2462 MHz, Rate 54 Mb/s, Strength 45 WPA
    SFR WiFi Mobile: Infra, 82:95:04:71:0E:F7, Freq 2412 MHz, Rate 54 Mb/s, Strength 44 WPA2 Enterprise
    FreeWifi_secure: Infra, F4:CA:E5:ED:78:3E, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA2 Enterprise
    FreeWifi:        Infra, F4:CA:E5:BE:44:D1, Freq 2462 MHz, Rate 54 Mb/s, Strength 44
    freeboxB165:     Infra, 00:24:D4:D0:1A:60, Freq 2462 MHz, Rate 54 Mb/s, Strength 35 WPA
    FreeWifi:        Infra, 0E:76:6B:29:10:4A, Freq 2462 MHz, Rate 54 Mb/s, Strength 25
    FreeWifi:        Infra, F4:CA:E5:ED:78:3D, Freq 2462 MHz, Rate 54 Mb/s, Strength 24
    FreeWifi_secure: Infra, BE:5E:6F:A2:FC:86, Freq 2462 MHz, Rate 54 Mb/s, Strength 45 WPA Enterprise
    SFR_0EF0:        Infra, 24:95:04:71:0E:F4, Freq 2437 MHz, Rate 54 Mb/s, Strength 45 WPA
    FreeWifi:        Infra, F4:CA:E5:A2:26:61, Freq 2462 MHz, Rate 54 Mb/s, Strength 39
    FreeWifi:        Infra, 00:24:D4:D0:1A:61, Freq 2462 MHz, Rate 54 Mb/s, Strength 32
    SFR WiFi FON:    Infra, 82:95:04:71:0E:F5, Freq 2437 MHz, Rate 54 Mb/s, Strength 45
    la_ruche:        Infra, 24:95:04:76:8D:9C, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA
    NUMERICABLE-FA24:Infra, 2C:B0:5D:E8:80:8B, Freq 2437 MHz, Rate 54 Mb/s, Strength 42 WPA WPA2
    HP-Print-3F-Deskjet 3520 series: Infra, 2C:44:FD:6D:CE:3F, Freq 2412 MHz, Rate 54 Mb/s, Strength 22 WPA2
    SFR WiFi Mobile: Infra, 9A:25:15:27:5B:AF, Freq 2412 MHz, Rate 54 Mb/s, Strength 15 WPA2 Enterprise
    airYogen:        Infra, F4:CA:E5:E5:70:BC, Freq 2427 MHz, Rate 54 Mb/s, Strength 35 WEP
    SFR WiFi Mobile: Infra, 82:95:04:71:0E:F7, Freq 2437 MHz, Rate 54 Mb/s, Strength 45 WPA2 Enterprise
    FreeWifi_secure: Infra, 00:24:D4:D0:1A:62, Freq 2462 MHz, Rate 54 Mb/s, Strength 27 WPA2 Enterprise
    FreeWifi_secure: Infra, 0E:76:6B:29:10:4B, Freq 2462 MHz, Rate 54 Mb/s, Strength 30 WPA Enterprise
    FREEBOX_RICHARD_WC: Infra, F4:CA:E5:A2:26:60, Freq 2462 MHz, Rate 54 Mb/s, Strength 25 WPA
    Bbox-00F38027:   Infra, DC:71:44:C5:0F:D8, Freq 2427 MHz, Rate 54 Mb/s, Strength 14 WPA WPA2


- Device: eth0  [Ethernet automatique] -----------------------------------------
  Type:              Wired
  Driver:            alx
  State:             connected
  Default:           yes
  HW Address:        B8:88:E3:80:45:7A

  Capabilities:
    Carrier Detect:  yes
    Speed:           100 Mb/s

  Wired Properties
    Carrier:         on

  IPv4 Settings:
    Address:         192.168.0.10
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.0.254

    DNS:             212.27.40.241
    DNS:             212.27.40.240

sudo rfkill list
résultat :

0: ideapad_wlan: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: ideapad_bluetooth: Bluetooth
	Soft blocked: yes
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
3: brcmwl-0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
4: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

"Je sais, un peu partout, tout le monde s'entretue, c'est pas gai, mais d'autres s'entrevivent, j'irai les retrouver." Jacques Prévert

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