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accès internet wifi

Bi0m4n

Bonjour,

nous avons un ordinateur portable de marque LENOVO G510 avec ubuntu, et depuis quelques temps nous ne pouvons plus acceder à internet depuis la connexion wifi. Dans un premier temps l'ordi ne pouvait pas du tout se connecter au wifi, puis j'ai utilisé une connexion par cable ethernet pour mettre à jour le système et maintenant l'ordi arrive à se connecter à la box mais quand on va sur le navigateur firefox il n'y a pas moyen d'accéder à internet.

J'ai cherché un peu sur le forum, je n'ai pas trouvé de sujets similaires.

J'ai fait les test demandés sur la console :

zitus@zitus-Lenovo-G510:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS"

zitus@zitus-Lenovo-G510:~$ lsusb
Bus 002 Device 002: ID 8087:8000 Intel Corp. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp. 
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 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 003 Device 002: ID 0bda:5728 Realtek Semiconductor Corp. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

zitus@zitus-Lenovo-G510:~$ lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #2 (rev d5)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
02:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
03:00.0 Ethernet controller: Qualcomm Atheros QCA8172 Fast Ethernet (rev 10)

zitus@zitus-Lenovo-G510:~$ sudo lshw -C network
  *-network               
       description: Wireless interface
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 01
       serial: 14:2d:27:fd:66:77
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) ip=192.168.0.10 latency=0 multicast=yes wireless=IEEE 802.11
       resources: irq:17 memory:b0500000-b0507fff
  *-network
       description: Ethernet interface
       product: QCA8172 Fast Ethernet
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: enp3s0
       version: 10
       serial: f8:a9:63:4c:ff:2f
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: 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 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:18 memory:b0400000-b043ffff ioport:3000(size=128)

zitus@zitus-Lenovo-G510:~$ lsmod
Module                  Size  Used by
hid_generic            16384  0
usbhid                 49152  0
hid                   118784  2 hid_generic,usbhid
nls_iso8859_1          16384  1
rtsx_usb_ms            20480  0
memstick               16384  1 rtsx_usb_ms
uvcvideo               90112  0
videobuf2_vmalloc      16384  1 uvcvideo
videobuf2_memops       16384  1 videobuf2_vmalloc
videobuf2_v4l2         24576  1 uvcvideo
videobuf2_core         40960  2 uvcvideo,videobuf2_v4l2
videodev              172032  3 uvcvideo,videobuf2_core,videobuf2_v4l2
media                  40960  2 uvcvideo,videodev
wl                   6447104  0
snd_hda_codec_hdmi     49152  1
intel_rapl             20480  0
x86_pkg_temp_thermal    16384  0
intel_powerclamp       16384  0
coretemp               16384  0
kvm                   585728  0
snd_hda_codec_conexant    24576  1
snd_hda_codec_generic    73728  1 snd_hda_codec_conexant
irqbypass              16384  1 kvm
crct10dif_pclmul       16384  0
crc32_pclmul           16384  0
ghash_clmulni_intel    16384  0
cryptd                 24576  1 ghash_clmulni_intel
intel_cstate           20480  0
intel_rapl_perf        16384  0
snd_hda_intel          40960  7
snd_hda_codec         126976  4 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_codec_generic
snd_hda_core           81920  5 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec,snd_hda_codec_hdmi,snd_hda_codec_generic
snd_hwdep              20480  1 snd_hda_codec
snd_pcm                98304  5 snd_hda_intel,snd_hda_codec,snd_hda_core,snd_hda_codec_hdmi
joydev                 20480  0
input_leds             16384  0
snd_seq_midi           16384  0
serio_raw              16384  0
snd_seq_midi_event     16384  1 snd_seq_midi
snd_rawmidi            32768  1 snd_seq_midi
snd_seq                65536  2 snd_seq_midi_event,snd_seq_midi
snd_seq_device         16384  3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer              32768  2 snd_seq,snd_pcm
cfg80211              614400  1 wl
lpc_ich                24576  0
snd                    81920  24 snd_hda_intel,snd_hwdep,snd_hda_codec_conexant,snd_seq,snd_hda_codec,snd_timer,snd_rawmidi,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_seq_device,snd_pcm
shpchp                 36864  0
mei_me                 40960  0
ideapad_laptop         32768  0
mei                    98304  1 mei_me
soundcore              16384  1 snd
ie31200_edac           16384  0
sparse_keymap          16384  1 ideapad_laptop
wmi                    24576  1 ideapad_laptop
mac_hid                16384  0
parport_pc             32768  0
ppdev                  20480  0
lp                     20480  0
parport                49152  3 lp,parport_pc,ppdev
autofs4                40960  2
rtsx_usb_sdmmc         28672  0
rtsx_usb               20480  2 rtsx_usb_sdmmc,rtsx_usb_ms
i915                 1806336  158
i2c_algo_bit           16384  1 i915
drm_kms_helper        167936  1 i915
psmouse               143360  0
syscopyarea            16384  1 drm_kms_helper
sysfillrect            16384  1 drm_kms_helper
sysimgblt              16384  1 drm_kms_helper
ahci                   36864  3
fb_sys_fops            16384  1 drm_kms_helper
libahci                32768  1 ahci
alx                    45056  0
drm                   356352  11 i915,drm_kms_helper
mdio                   16384  1 alx
video                  40960  2 i915,ideapad_laptop

zitus@zitus-Lenovo-G510:~$ iwconfig
lo        no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:"SFR-a59a"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 40:65:A3:E1:A5:A0   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          
enp3s0    no wireless extensions.

zitus@zitus-Lenovo-G510:~$ ifconfig
enp3s0    Link encap:Ethernet  HWaddr f8:a9:63:4c:ff:2f  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:1015424 errors:0 dropped:0 overruns:0 frame:0
          TX packets:544096 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1366596861 (1.3 GB)  TX bytes:51988811 (51.9 MB)
          Interrupt:18 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:21333 errors:0 dropped:0 overruns:0 frame:0
          TX packets:21333 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1679815 (1.6 MB)  TX bytes:1679815 (1.6 MB)

wlp2s0    Link encap:Ethernet  HWaddr 14:2d:27:fd:66:77  
          inet addr:192.168.0.10  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::9234:a49a:9b40:56e1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3281 errors:0 dropped:0 overruns:0 frame:69654
          TX packets:688 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:252911 (252.9 KB)  TX bytes:105577 (105.5 KB)
          Interrupt:17

zitus@zitus-Lenovo-G510:~$ sudo iwlist scan
lo        Interface doesn't support scanning.

wlp2s0    Scan completed :
          Cell 01 - Address: 40:65:A3:E1:A5:A0
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=66/70  Signal level=-44 dBm  
                    Encryption key:on
                    ESSID:"SFR-a59a"
                    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: 4ms ago
                    IE: Unknown: 00085346522D61353961
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    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: 0B050000120000
                    IE: Unknown: 2D1ABC191BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160B080000000000000000000000000000000000000000
                    IE: Unknown: 7F080400080000000040
                    IE: Unknown: DD830050F204104A0001101044000102103B00010310470010E37F066AC2658E4F1E7E38601B78E4BB10210008536167656D636F6D10230008536167656D636F6D1024000631323334353610420007303030303030311054000800060050F20400011011000A536167656D636F6D4150100800022008103C0001031049000600372A000120
                    IE: Unknown: DD090010180200000C0000
                    IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
                    IE: Unknown: 46057208010000
          Cell 02 - Address: D8:6C:E9:8E:2F:70
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=21/70  Signal level=-89 dBm  
                    Encryption key:on
                    ESSID:"Bbox-4C0AE9EE"
                    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: 4ms ago
                    IE: Unknown: 000D42626F782D3443304145394545
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0104
                    IE: Unknown: 32040C183060
                    IE: Unknown: 2D1AEC0103FFFFFF00000000000000000000000000000C1846471100
                    IE: Unknown: 3D160B000400000000000000000000000000000000000000
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B05010006127A
                    IE: Unknown: 7F0101
                    IE: Unknown: DD07000C4307000000
                    IE: Unknown: 0706465220010D10
          Cell 03 - Address: 6C:38:A1:5F:B7:18
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=32/70  Signal level=-78 dBm  
                    Encryption key:on
                    ESSID:"CARIBOU"
                    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: 4ms ago
                    IE: Unknown: 000743415249424F55
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: Unknown: 32040C183060
                    IE: Unknown: 2D1AEC0103FFFFFF00000000000000000000000000000C1846471100
                    IE: Unknown: 3D1601000400000000000000000000000000000000000000
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B05020048127A
                    IE: Unknown: 7F0101
                    IE: Unknown: DD07000C4307000000
                    IE: Unknown: 0706465220010D10
          Cell 04 - Address: 68:A3:78:CC:B2:A4
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=53/70  Signal level=-57 dBm  
                    Encryption key:on
                    ESSID:"Freebox-66704F"
                    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: 4ms ago
                    IE: Unknown: 000E46726565626F782D363637303446
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 030101
                    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: 3D1601000000000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
          Cell 05 - Address: 68:A3:78:CC:B2:A5
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=55/70  Signal level=-55 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: 4ms ago
                    IE: Unknown: 00084672656557696669
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: Unknown: 3205243048606C
                    IE: Unknown: 2D1AEC0003FFFFFF0001000000000000000100000000000000000000
                    IE: Unknown: 3D1601000000000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
          Cell 06 - Address: 68:A3:78:CC:B2:A6
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=54/70  Signal level=-56 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: 4ms ago
                    IE: Unknown: 000F46726565576966695F736563757265
                    IE: Unknown: 010882848B962C0C1218
                    IE: Unknown: 030101
                    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: 3D1601000000000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
          Cell 07 - Address: F0:82:61:C8:73:C0
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=56/70  Signal level=-54 dBm  
                    Encryption key:on
                    ESSID:"Livebox-73C0"
                    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: 4ms ago
                    IE: Unknown: 000C4C697665626F782D37334330
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 0706465220010D14
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 2D1AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 331AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 3D1606080400000000000000000000000000000000000000
                    IE: Unknown: 341606080400000000000000000000000000000000000000
                    IE: Unknown: DD180050F2020101890003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0900037F01010000FF7F
                    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: DD8F0050F204104A0001101044000102103B000103104700104D373F393D38FA3FFE3A4A374D373F3910210008536167656D636F6D10230016536167656D636F6D46617374333936355F4C42322E381024000C53475F4C42335F312E322E31104200094E51313430373246461054000800060050F204000110110000100800020006103C0001011049000600372A000120
          Cell 08 - Address: 92:82:61:C8:73:C0
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=50/70  Signal level=-60 dBm  
                    Encryption key:off
                    ESSID:"orange"
                    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: 4ms ago
                    IE: Unknown: 00066F72616E6765
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 0706465220010D14
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 2D1AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 331AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 3D1606080400000000000000000000000000000000000000
                    IE: Unknown: 341606080400000000000000000000000000000000000000
                    IE: Unknown: DD180050F2020101890003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0900037F01010000FF7F
          Cell 09 - Address: 68:15:90:1B:7B:AE
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=27/70  Signal level=-83 dBm  
                    Encryption key:on
                    ESSID:"Livebox-7BAE"
                    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: 4ms ago
                    IE: Unknown: 000C4C697665626F782D37424145
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 0706465220010D14
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 2D1AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 331AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 3D1606080400000000000000000000000000000000000000
                    IE: Unknown: 341606080400000000000000000000000000000000000000
                    IE: Unknown: DD180050F2020101880003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD8F0050F204104A0001101044000102103B000103104700103D3F383C4037F849FE49484C3D3F383C10210008536167656D636F6D10230016536167656D636F6D46617374333936355F4C42322E381024000C53475F4C42335F312E322E31104200094C4B313332363146461054000800060050F204000110110000100800020006103C0001011049000600372A000120
                    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
          Cell 10 - Address: D0:84:B0:6F:12:F0
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=40/70  Signal level=-70 dBm  
                    Encryption key:on
                    ESSID:"Livebox-12F0"
                    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: 4ms ago
                    IE: Unknown: 000C4C697665626F782D31324630
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 0706465220010D14
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 2D1AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 331AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 3D1606080000000000000000000000000000000000000000
                    IE: Unknown: 341606080000000000000000000000000000000000000000
                    IE: Unknown: DD180050F2020101880003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0900037F01010000FF7F
                    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: DD8F0050F204104A0001101044000102103B000103104700104B373F3B4937FD4DF8394D374B373F3B10210008536167656D636F6D10230016536167656D636F6D46617374333936355F4C42322E381024000C53475F4C42335F312E322E33104200094E51313530343246461054000800060050F204000110110000100800020006103C0001011049000600372A000120
          Cell 11 - Address: 92:84:B0:6F:12:F0
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=40/70  Signal level=-70 dBm  
                    Encryption key:off
                    ESSID:"orange"
                    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: 4ms ago
                    IE: Unknown: 00066F72616E6765
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 0706465220010D14
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 2D1AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 331AAD011BFFFF0000000000000000000000000000000406E4A70C00
                    IE: Unknown: 3D1606080000000000000000000000000000000000000000
                    IE: Unknown: 341606080000000000000000000000000000000000000000
                    IE: Unknown: DD180050F2020101880003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0900037F01010000FF7F

enp3s0    Interface doesn't support scanning.

zitus@zitus-Lenovo-G510:~$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

zitus@zitus-Lenovo-G510:~$ nm-tool
No command 'nm-tool' found, did you mean:
 Command 'dm-tool' from package 'lightdm' (main)
nm-tool: command not found

zitus@zitus-Lenovo-G510:~$ uname -r -m
4.13.0-26-generic x86_64

zitus@zitus-Lenovo-G510:~$ sudo rfkill list
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

zitus@zitus-Lenovo-G510:~$ nmcli connection show
NAME                   UUID                                  TYPE             DEVICE 
SFR-a59a               19381f6a-a17f-416c-8bd8-257f234889fb  802-11-wireless  wlp2s0 
Ethernet connection 1  aaa83aab-2fe9-4de1-85c5-6b90d187986b  802-3-ethernet   --     
FreeWifi               266d851b-e873-4d57-ac17-9c9a8c2ee4c8  802-11-wireless  --     
Livebox-96C0           93175eb4-3493-49d0-a00f-c104f46383c9  802-11-wireless  --     
Livebox-FC22           28f32f88-c97c-4c0a-85d1-f10f9c201d11  802-11-wireless  --     
Livebox-e10c           36f55854-fb98-4d29-89d7-0d32c1ed3baf  802-11-wireless  --     
Wired connection 1     220f0a2f-e888-3f5f-a10d-c3e57901a26e  802-3-ethernet   --     
orange                 da71b121-4eb7-4510-845f-8c7b0dc1e5ac  802-11-wireless  --

Merci beaucoup pour votre aide !

Je précise, je ne sais pas si c'est important, mais l'install de ubuntu est tout en anglais.

xubu1957

Bonjour,

Pour la carte wifi :

Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)

Voir § 2 et documentation au début du § 3 > [Tuto] Pas de Wi-fi ? Eléments importants à vérifier pour désactiver le secure-boot.

sudo rfkill list
0: ideapad_wlan: Wireless LAN
	Soft blocked: no
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no

Désactiver un module WLAN :

echo "blacklist ideapad_laptop" | sudo tee /etc/modprobe.d/ideapad.conf

Bi0m4n

merci de la réponse rapide,

je ne comprends pas comment aller désactiver le secure-boot : je suis allé dans la config uefi et je ne vois pas d'option concernant le secure-boot.

et par rapport aux discussions sur ce sujet, mon ordi arrive bien à se connecter à la box, et le wifi semble actif, ma box apparait dans la fenetre de dialogue, c'est ensuite que je n'arrive pas à aller sur internet.

xubu1957

Tu as regardé l'assistance de Firefox > sites-chargent-pas-investiguer-corriger-erreur ?

Bi0m4n

oui j'ai d'abord cherché dans cette direction. je n'arrive à acceder à aucun site, j'arrive seulement à me connecter à ma box via l'IP 192.168.0.1, ce qui montre que le wifi fonctionne quand même un peu ..

après les solutions proposées par mozilla sont sur windows, je ne peux donc pas tester tout ce qui est pare-feu, serveur DNS, etc

xubu1957

Vu > cannot-connect-to-wifi-with-lenovo-g510-wireless-under-ubuntu

Tente :

sudo apt-get install --reinstall bcmwl-kernel-source

Bi0m4n

la ligne de commande indiquée ne fontionne pas : la réponse est "Command line option --reinstal is not understood in combination with the other options"

Est-ce que ça pourrait être lié au paramètres de passerelle ou de DNS ? ou de l'attrib automatique de l'adresse IP ?

dans le fichier /etc/network/interfaces il n'y as pas de traces de la connection wifi telle qu'elle existe quand on fait ifconfig

et même question quand je compare le resultat de ifconfig avec ce que me dit ma box sur l'IP 192.168.0.1 : on ne retrouve pas les mêmes IP

je sais pas si c'est très clair ce que je veux dire mais j'ai comme l'impression que le pc et la box arrivent à se connecter, mais après ils n'arrivent pas à se parler comme il faut ..

xubu1957

Tu as une Box SFR > sfr/interface-gestion-box

Je lis :

Dans la barre d'adresse, saisissez "http://monmodem" ou "http://192.168.0.1" puis validez par la touche "Entrée" du clavier,

Bi0m4n

Oui c'est ça, je peux consulter cette adresse IP depuis mon navigateur. et je n'ai changé aucun paramètre puisque j'ai un autre portable windows 10 qui utilise aussi ce wifi..

xubu1957

Tu peux regarder si tu peux ajouter un pilote additionnel en te servant de la Doc > [doc]gestionnaire_de_pilotes_proprietaires[/doc]

Bi0m4n

il n'y a pas de pilotes additionnels de proposés dans cette liste.

concernant ce que j'ai dit sur les paramètres de connexions (IP, DNS, etc), qu'en penses tu ?

xubu1957

uname -r -m
4.13.0-26-generic x86_64

pour le noyau copié sur la version 17.10, voir > Anomalies réseaux en Ethernet sur la version 17.10

Bi0m4n

alors la commande "sudo dpkg-reconfigure resolvconf" n'a pas résolu le problème..

en revanche, en fouillant dans le même topic et en testant le "sudo dhclient eth0" d'un usager appliqué à ma connexion wifi apparaissant dans "ifconfig" = "sudo dhclient wlp2s0", j'accède aux sites internet !

cependant, après redémarage de l'ordi, toujours le même problème, qui se regle de la même façon quand je tape dans la console la commande "sudo dhclient wlp2s0"

J'ai pas trop envie de devoir faire ça à chaque démarage ! il doit bien y avoir un moyen de configurer ça proprement ..

xubu1957

Essaye cette commande :

sudo ifdown --exclude=lo -a && sudo ifup --exclude=lo -a

Bi0m4n

aucun effet de cette commande, la console ne dit rien de plus après avoir tapé le mot de passe et le problème persiste.

Je vais être hors-ligne pour le reste de l'après midi, merci pour l'aide en tout cas, j'essaierai de regler ce problème plus tard.

Peut-être que cette discussion aurait plus sa place dans le répertoire "Accès internet et réseaux" ? Je ne sais pas si je peux déplacer une conversation.

xubu1957

Tu fais ta demande de déplacement, en te servant du bouton Signaler aux modérateurs, en bas du message.