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[abandonné]wifi très faible voire nul

jbmuffat

Bonsoir,
depuis quelques jours ma réception wifi chez moi est très faible, alors que je suis près de ma borne et que pour les autres appareils elle est correcte.
Au lycée, le réseau n'est plus détecté.
Ma carte "wifi" est une Broadcom 43142.
Je précise si besoin que secure boot est désactivé.
Que faire?

Zakhar

jbmuffat a écritQue faire?

Commencer par mettre le résultat des commandes indiquées en tête de la section Wifi afin que les gens puissent t'aider.

jbmuffat

Voilà:

jb@jb-HP-Pavilion-Notebook:~$ lspci | grep -i net
08:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 0a)

xubu1957

Bonjour,

Il faut donner, en se servant du : Retour utilisable de commande, ces informations : Configuration wifi ou un [doc]wificheck[/doc]

Nota : un fichier wificheck.log est créé dans votre répertoire personnel, collez l'intégralité de son contenu dans votre discussion.

jbmuffat

Alors on y va:

jb@jb-HP-Pavilion-Notebook:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS"
jb@jb-HP-Pavilion-Notebook:~$

lsusb

jb@jb-HP-Pavilion-Notebook:~$ lspci
00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
00:04.0 Signal processing controller: Intel Corporation Broadwell-U Camarillo Device (rev 09)
00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03)
00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3)
00:1c.1 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #2 (rev e3)
00:1c.2 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3)
00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3)
00:1c.4 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #5 (rev e3)
00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03)
00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
08:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 0a)
0a:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 940M] (rev a2)

jb@jb-HP-Pavilion-Notebook:~$ lspci -k -nn | grep -A 3 -i net
08:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
	DeviceName: Broadcom BCM43142 802.11 b/g/n 1x1Wi-Fi + BT4.0 M.2 Combo Adapter
	Subsystem: Hewlett-Packard Company BCM43142 802.11b/g/n [103c:804a]
	Kernel driver in use: wl
--
09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 0a)
	DeviceName: Realtek PCIe FE Family Controller
	Subsystem: Hewlett-Packard Company RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [103c:8097]
	Kernel driver in use: r8169
	Kernel modules: r8169
0a:00.0 3D controller [0302]: NVIDIA Corporation GM108M [GeForce 940M] [10de:1347] (rev a2)

jb@jb-HP-Pavilion-Notebook:~$ lspci -k
00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
	Subsystem: Hewlett-Packard Company Broadwell-U Host Bridge -OPI
	Kernel driver in use: bdw_uncore
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
	DeviceName: Intel(R) Graphics GT2
	Subsystem: Hewlett-Packard Company Broadwell-U Integrated Graphics
	Kernel driver in use: i915
	Kernel modules: i915
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
	Subsystem: Hewlett-Packard Company Broadwell-U Audio Controller
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel
00:04.0 Signal processing controller: Intel Corporation Broadwell-U Camarillo Device (rev 09)
	Subsystem: Hewlett-Packard Company Broadwell-U Processor Thermal Subsystem
	Kernel driver in use: proc_thermal
	Kernel modules: processor_thermal_device
00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03)
	Subsystem: Hewlett-Packard Company Wildcat Point-LP USB xHCI Controller
	Kernel driver in use: xhci_hcd
00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
	Subsystem: Hewlett-Packard Company Wildcat Point-LP MEI Controller
	Kernel driver in use: mei_me
	Kernel modules: mei_me
00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
	Subsystem: Hewlett-Packard Company Wildcat Point-LP High Definition Audio Controller
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1c.1 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #2 (rev e3)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1c.2 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1c.4 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #5 (rev e3)
	Kernel driver in use: pcieport
	Kernel modules: shpchp
00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
	Subsystem: Hewlett-Packard Company Wildcat Point-LP LPC Controller
	Kernel driver in use: lpc_ich
	Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03)
	Subsystem: Hewlett-Packard Company Wildcat Point-LP SATA Controller [AHCI Mode]
	Kernel driver in use: ahci
	Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
	Subsystem: Hewlett-Packard Company Wildcat Point-LP SMBus Controller
	Kernel modules: i2c_i801
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
	Subsystem: Hewlett-Packard Company RTS522A PCI Express Card Reader
	Kernel driver in use: rtsx_pci
	Kernel modules: rtsx_pci
08:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
	DeviceName: Broadcom BCM43142 802.11 b/g/n 1x1Wi-Fi + BT4.0 M.2 Combo Adapter
	Subsystem: Hewlett-Packard Company BCM43142 802.11b/g/n
	Kernel driver in use: wl
	Kernel modules: bcma, wl
09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 0a)
	DeviceName: Realtek PCIe FE Family Controller
	Subsystem: Hewlett-Packard Company RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
	Kernel driver in use: r8169
	Kernel modules: r8169
0a:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 940M] (rev a2)
	DeviceName: NVIDIA GeForce 940M
	Subsystem: Hewlett-Packard Company GM108M [GeForce 940M]
	Kernel modules: nvidiafb, nouveau

b@jb-HP-Pavilion-Notebook:~$ sudo lshw -C network
[sudo] Mot de passe de jb : 
  *-network               
       description: Interface réseau sans fil
       produit: BCM43142 802.11b/g/n
       fabriquant: Broadcom Corporation
       identifiant matériel: 0
       information bus: pci@0000:08:00.0
       nom logique: wlo1
       version: 01
       numéro de série: 60:6d:c7:d4:5e:ff
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) ip=192.168.1.64 latency=0 multicast=yes wireless=IEEE 802.11abg
       ressources: irq:18 mémoire:c6100000-c6107fff
  *-network
       description: Ethernet interface
       produit: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       fabriquant: Realtek Semiconductor Co., Ltd.
       identifiant matériel: 0
       information bus: pci@0000:09:00.0
       nom logique: eth0
       version: 0a
       numéro de série: 94:57:a5:dd:a2:26
       taille: 100Mbit/s
       capacité: 100Mbit/s
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8107e-2_0.0.2 02/26/15 ip=192.168.1.54 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       ressources: irq:49 portE/S:4000(taille=256) mémoire:c6004000-c6004fff mémoire:c6000000-c6003fff
jb@jb-HP-Pavilion-Notebook:~$

jbmuffat

La suite:

Module                  Size  Used by
rfcomm                 69632  14
pci_stub               16384  1
vboxpci                24576  0
vboxnetadp             28672  0
vboxnetflt             28672  0
vboxdrv               454656  3 vboxnetadp,vboxnetflt,vboxpci
appletalk              36864  0
ipx                    28672  0
p8023                  16384  1 ipx
p8022                  16384  1 ipx
psnap                  16384  2 ipx,appletalk
llc                    16384  2 p8022,psnap
bnep                   20480  2
promethean             49152  0
binfmt_misc            20480  1
hp_wmi                 16384  0
sparse_keymap          16384  1 hp_wmi
intel_rapl             20480  0
x86_pkg_temp_thermal    16384  0
intel_powerclamp       16384  0
coretemp               16384  0
kvm_intel             172032  0
kvm                   548864  1 kvm_intel
btusb                  45056  0
irqbypass              16384  1 kvm
btrtl                  16384  1 btusb
btbcm                  16384  1 btusb
btintel                16384  1 btusb
crct10dif_pclmul       16384  0
crc32_pclmul           16384  0
bluetooth             520192  39 bnep,btbcm,btrtl,btusb,rfcomm,btintel
ghash_clmulni_intel    16384  0
wl                   6447104  0
aesni_intel           167936  0
aes_x86_64             20480  1 aesni_intel
lrw                    16384  1 aesni_intel
gf128mul               16384  1 lrw
glue_helper            16384  1 aesni_intel
ablk_helper            16384  1 aesni_intel
cryptd                 20480  3 ghash_clmulni_intel,aesni_intel,ablk_helper
snd_hda_codec_hdmi     53248  1
snd_hda_codec_realtek    90112  1
snd_hda_codec_generic    77824  1 snd_hda_codec_realtek
snd_hda_intel          40960  10
snd_hda_codec         135168  4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel
snd_hda_core           69632  5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
snd_hwdep              16384  1 snd_hda_codec
joydev                 20480  0
cfg80211              573440  1 wl
snd_pcm               106496  4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
snd_seq_midi           16384  0
snd_seq_midi_event     16384  1 snd_seq_midi
rtsx_pci_ms            20480  0
snd_rawmidi            32768  1 snd_seq_midi
snd_seq                69632  2 snd_seq_midi_event,snd_seq_midi
input_leds             16384  0
memstick               20480  1 rtsx_pci_ms
serio_raw              16384  0
snd_seq_device         16384  3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer              32768  2 snd_pcm,snd_seq
snd                    81920  31 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
soundcore              16384  1 snd
8250_fintek            16384  0
eeprom                 16384  0
hp_accel               28672  0
shpchp                 36864  0
lis3lv02d              20480  1 hp_accel
input_polldev          16384  1 lis3lv02d
tpm_crb                16384  0
hp_wireless            16384  0
mei_me                 36864  0
processor_thermal_device    16384  0
int340x_thermal_zone    16384  1 processor_thermal_device
mei                    98304  1 mei_me
int3400_thermal        16384  0
intel_soc_dts_iosf     16384  1 processor_thermal_device
acpi_thermal_rel       16384  1 int3400_thermal
acpi_pad               24576  0
lpc_ich                24576  0
mac_hid                16384  0
cuse                   16384  3
parport_pc             32768  0
ppdev                  20480  0
lp                     20480  0
parport                49152  3 lp,ppdev,parport_pc
autofs4                40960  2
dm_mirror              24576  0
dm_region_hash         24576  1 dm_mirror
dm_log                 20480  2 dm_region_hash,dm_mirror
mmc_block              36864  2
hid_generic            16384  0
usbhid                 49152  0
hid                   118784  2 hid_generic,usbhid
rtsx_pci_sdmmc         24576  0
nouveau              1495040  0
i915                 1208320  9
ahci                   36864  3
mxm_wmi                16384  1 nouveau
psmouse               131072  0
ttm                    98304  1 nouveau
i2c_algo_bit           16384  2 i915,nouveau
drm_kms_helper        155648  2 i915,nouveau
libahci                32768  1 ahci
syscopyarea            16384  1 drm_kms_helper
sysfillrect            16384  1 drm_kms_helper
r8169                  81920  0
sysimgblt              16384  1 drm_kms_helper
fb_sys_fops            16384  1 drm_kms_helper
mii                    16384  1 r8169
drm                   364544  12 ttm,i915,drm_kms_helper,nouveau
rtsx_pci               53248  2 rtsx_pci_ms,rtsx_pci_sdmmc
wmi                    20480  3 hp_wmi,mxm_wmi,nouveau
video                  40960  2 i915,nouveau
fjes                   28672  0

jb@jb-HP-Pavilion-Notebook:~$ lsmod
Module                  Size  Used by
rfcomm                 69632  14
pci_stub               16384  1
vboxpci                24576  0
vboxnetadp             28672  0
vboxnetflt             28672  0
vboxdrv               454656  3 vboxnetadp,vboxnetflt,vboxpci
appletalk              36864  0
ipx                    28672  0
p8023                  16384  1 ipx
p8022                  16384  1 ipx
psnap                  16384  2 ipx,appletalk
llc                    16384  2 p8022,psnap
bnep                   20480  2
promethean             49152  0
binfmt_misc            20480  1
hp_wmi                 16384  0
sparse_keymap          16384  1 hp_wmi
intel_rapl             20480  0
x86_pkg_temp_thermal    16384  0
intel_powerclamp       16384  0
coretemp               16384  0
kvm_intel             172032  0
kvm                   548864  1 kvm_intel
btusb                  45056  0
irqbypass              16384  1 kvm
btrtl                  16384  1 btusb
btbcm                  16384  1 btusb
btintel                16384  1 btusb
crct10dif_pclmul       16384  0
crc32_pclmul           16384  0
bluetooth             520192  39 bnep,btbcm,btrtl,btusb,rfcomm,btintel
ghash_clmulni_intel    16384  0
wl                   6447104  0
aesni_intel           167936  0
aes_x86_64             20480  1 aesni_intel
lrw                    16384  1 aesni_intel
gf128mul               16384  1 lrw
glue_helper            16384  1 aesni_intel
ablk_helper            16384  1 aesni_intel
cryptd                 20480  3 ghash_clmulni_intel,aesni_intel,ablk_helper
snd_hda_codec_hdmi     53248  1
snd_hda_codec_realtek    90112  1
snd_hda_codec_generic    77824  1 snd_hda_codec_realtek
snd_hda_intel          40960  10
snd_hda_codec         135168  4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel
snd_hda_core           69632  5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
snd_hwdep              16384  1 snd_hda_codec
joydev                 20480  0
cfg80211              573440  1 wl
snd_pcm               106496  4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
snd_seq_midi           16384  0
snd_seq_midi_event     16384  1 snd_seq_midi
rtsx_pci_ms            20480  0
snd_rawmidi            32768  1 snd_seq_midi
snd_seq                69632  2 snd_seq_midi_event,snd_seq_midi
input_leds             16384  0
memstick               20480  1 rtsx_pci_ms
serio_raw              16384  0
snd_seq_device         16384  3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer              32768  2 snd_pcm,snd_seq
snd                    81920  31 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
soundcore              16384  1 snd
8250_fintek            16384  0
eeprom                 16384  0
hp_accel               28672  0
shpchp                 36864  0
lis3lv02d              20480  1 hp_accel
input_polldev          16384  1 lis3lv02d
tpm_crb                16384  0
hp_wireless            16384  0
mei_me                 36864  0
processor_thermal_device    16384  0
int340x_thermal_zone    16384  1 processor_thermal_device
mei                    98304  1 mei_me
int3400_thermal        16384  0
intel_soc_dts_iosf     16384  1 processor_thermal_device
acpi_thermal_rel       16384  1 int3400_thermal
acpi_pad               24576  0
lpc_ich                24576  0
mac_hid                16384  0
cuse                   16384  3
parport_pc             32768  0
ppdev                  20480  0
lp                     20480  0
parport                49152  3 lp,ppdev,parport_pc
autofs4                40960  2
dm_mirror              24576  0
dm_region_hash         24576  1 dm_mirror
dm_log                 20480  2 dm_region_hash,dm_mirror
mmc_block              36864  2
hid_generic            16384  0
usbhid                 49152  0
hid                   118784  2 hid_generic,usbhid
rtsx_pci_sdmmc         24576  0
nouveau              1495040  0
i915                 1208320  9
ahci                   36864  3
mxm_wmi                16384  1 nouveau
psmouse               131072  0
ttm                    98304  1 nouveau
i2c_algo_bit           16384  2 i915,nouveau
drm_kms_helper        155648  2 i915,nouveau
libahci                32768  1 ahci
syscopyarea            16384  1 drm_kms_helper
sysfillrect            16384  1 drm_kms_helper
r8169                  81920  0
sysimgblt              16384  1 drm_kms_helper
fb_sys_fops            16384  1 drm_kms_helper
mii                    16384  1 r8169
drm                   364544  12 ttm,i915,drm_kms_helper,nouveau
rtsx_pci               53248  2 rtsx_pci_ms,rtsx_pci_sdmmc
wmi                    20480  3 hp_wmi,mxm_wmi,nouveau
video                  40960  2 i915,nouveau
fjes                   28672  0
jb@jb-HP-Pavilion-Notebook:~$

jb@jb-HP-Pavilion-Notebook:~$ iwconfig
lo        no wireless extensions.

wlo1      IEEE 802.11abg  ESSID:"SFR_6178"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 24:95:04:C7:61:7C   
          Bit Rate=1 Mb/s   Tx-Power=200 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=23/70  Signal level=-87 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

eth0      no wireless extensions.

jb@jb-HP-Pavilion-Notebook:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 94:57:a5:dd:a2:26  
          inet adr:192.168.1.54  Bcast:192.168.1.255  Masque:255.255.255.0
          adr inet6: fe80::754a:6d03:3192:d05f/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:210891 erreurs:0 :0 overruns:0 frame:0
          TX packets:135703 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:264322276 (264.3 MB) Octets transmis:16400421 (16.4 MB)

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:7477 erreurs:0 :0 overruns:0 frame:0
          TX packets:7477 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1 
          Octets reçus:635604 (635.6 KB) Octets transmis:635604 (635.6 KB)

wlo1      Link encap:Ethernet  HWaddr 60:6d:c7:d4:5e:ff  
          inet adr:192.168.1.64  Bcast:192.168.1.255  Masque:255.255.255.0
          adr inet6: fe80::626d:c7ff:fed4:5eff/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:5705 erreurs:0 :0 overruns:0 frame:29910
          TX packets:1906 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:1905036 (1.9 MB) Octets transmis:435600 (435.6 KB)
          Interruption:18 

jb@jb-HP-Pavilion-Notebook:~$

jb@jb-HP-Pavilion-Notebook:~$ sudo iwlist scan
[sudo] Mot de passe de jb : 
lo        Interface doesn't support scanning.

wlo1      Scan completed :
          Cell 01 - Address: 24:95:04:C7:61:7C
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=22/70  Signal level=-88 dBm  
                    Encryption key:on
                    ESSID:"SFR_6178"
                    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: 7ms ago
                    IE: Unknown: 00085346525F36313738
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AEC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606000400000000000000000000000000000000000000
                    IE: Unknown: DD870050F204104A0001101044000102103B00010310470010000000000000000000000000000000001021000B4E4236562D4658432D72301023000B4E4236562D4658432D72301024000B4E4236562D4658432D72301042000C3234393530344337363137381054000800060050F2040001101100085346525F36313738100800020084103C000101
                    IE: Unknown: DD090010180202F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 02 - Address: 82:95:04:C7:61:7D
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=24/70  Signal level=-86 dBm  
                    Encryption key:off
                    ESSID:"SFR WiFi FON"
                    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: 7ms ago
                    IE: Unknown: 000C534652205769466920464F4E
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AEC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606000000000000000000000000000000000000000000
                    IE: Unknown: DD090010180200F02C0000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 03 - Address: 82:95:04:C7:61:7F
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=24/70  Signal level=-86 dBm  
                    Encryption key:on
                    ESSID:"SFR WiFi Mobile"
                    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: 7ms ago
                    IE: Unknown: 000F5346522057694669204D6F62696C65
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : 802.1x
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AEC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606000000000000000000000000000000000000000000
                    IE: Unknown: DD090010180200F02C0000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00

eth0      Interface doesn't support scanning.

jb@jb-HP-Pavilion-Notebook:~$ uname -r -m 
4.4.0-103-lowlatency x86_64

jb@jb-HP-Pavilion-Notebook:~$ cat  /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

jb@jb-HP-Pavilion-Notebook:~$ cat  /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
jb@jb-HP-Pavilion-Notebook:~$

jb@jb-HP-Pavilion-Notebook:~$ nm-tool
La commande « nm-tool » est introuvable, vouliez-vous dire :
 La commande « dm-tool » du paquet « lightdm » (main)
nm-tool : commande introuvable

jb@jb-HP-Pavilion-Notebook:~$ sudo rfkill list
0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: brcmwl-0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
2: hci0: Bluetooth
	Soft blocked: yes
	Hard blocked: no

jb@jb-HP-Pavilion-Notebook:~$ nmcli connection show
NOM                     UUID                                  TYPE             PÉRIPHÉRIQUE 
Profil 1                0131071f-a642-48ff-aeff-a4d9ac1b7400  802-3-ethernet   eth0         
SFR_6178                24a5be03-a2aa-4da0-8e5a-9f027f1d5494  802-11-wireless  wlo1         
AndroidHotspot7551      53e19937-5a77-4eca-88a0-2d551e364743  802-11-wireless  --           
FreeWifi                143f6dd1-f2b1-4267-aa77-bf1a13953542  802-11-wireless  --           
HAKAN                   dd9cb257-4a21-4e76-9d83-cff883194d2b  802-11-wireless  --           
HOTELF1                 edf34067-f3c1-499a-a2d7-93f2504c47ec  802-11-wireless  --           
Hotspot                 eaf6ab88-6f87-473b-b2d4-bf49d4e1dda6  802-11-wireless  --           
Livebox-599d            11229468-39b6-4908-96ed-f67d4210c857  802-11-wireless  --           
atelierDesSciences_2.4  d36eeed4-c0ab-4952-86ac-3775d49b3d8e  802-11-wireless  --           
borne1                  51b00fe1-a562-4d9a-a76d-fb1d71f74a4f  802-11-wireless  --           
dlink                   4a5edfed-e693-4183-ab3f-2989ef71afa5  802-11-wireless  --           
orange                  0d768ed9-2973-4230-86d7-dcbaaf2b0b87  802-11-wireless  --           
osiria                  2de45a5e-2ead-4cd9-a1e3-b11432024633  802-11-wireless  --           
osiris                  11fa0231-013c-491b-abd6-e9ca96876b52  802-11-wireless  --           
osiris 1                c2d0cc5b-70e0-4119-adbf-de14d784d051  802-11-wireless  --           
osiris 2                e72af335-97ed-48c9-a9cf-d1eddf3c3e12  802-11-wireless  --           
osiris 3                feb79578-97ce-4436-b1ce-5adb35104489  802-11-wireless  --           
osiris 4                50c288a4-a60d-467b-9ca1-291578e75036  802-11-wireless  --           
uha                     4209cf66-be8f-4f28-a648-e5c55dd747f3  802-11-wireless  --

Et wifichellog donne

>>    cat /etc/lsb-release 

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS"

>>    lsusb 

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 0a5c:216d Broadcom Corp. 
Bus 001 Device 002: ID 0461:4d0f Primax Electronics, Ltd HP Optical Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

>>    lspci -k -nn | grep -A 3 -i net 

08:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    DeviceName: Broadcom BCM43142 802.11 b/g/n 1x1Wi-Fi + BT4.0 M.2 Combo Adapter
    Subsystem: Hewlett-Packard Company BCM43142 802.11b/g/n [103c:804a]
    Kernel driver in use: wl
--
09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 0a)
    DeviceName: Realtek PCIe FE Family Controller
    Subsystem: Hewlett-Packard Company RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [103c:8097]
    Kernel driver in use: r8169
    Kernel modules: r8169
0a:00.0 3D controller [0302]: NVIDIA Corporation GM108M [GeForce 940M] [10de:1347] (rev a2)

>>    sudo lshw -C network

Voilà, je crois que j'ai tout mis

xubu1957

wlo1      IEEE 802.11abg  ESSID:"SFR_6178"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 24:95:04:C7:61:7C   
          Bit Rate=1 Mb/s   Tx-Power=200 dBm

Essaye :

§ 6.5 a écritSi vous voyez Bit Rate=1Mb/s alors tapez :

sudo ifdown wlo1
sudo iwconfig wlo1 rate 54M
sudo ifup wlo1

Enfin, faites "iwconfig" pour vérifier qu'il vous met bien Bit Rate=54Mb/s . Voilà qui devrait aller mieux !

Doc > wifi#connexion_lente

jbmuffat

sudo ifdown wlo1 me donne, que j'ai lancé tout de même:

Unknown interface wlo1

La commande suivante:

Error for wireless request "Set Bit Rate" (8B20) :
    SET failed on device wlo1 ; Operation not supported.

et la 3e redonne

[code]Unknown interface wlo1

[/code]

xubu1957

Tente :

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

Le 20/07/2017, LeJediGris a écritRe-

...
Askubuntu a écritRestarting networking on a desktop machine will cause dbus and a bunch of service to stop and never be started again, usually leading to the whole system being unusable.

As Ubuntu does event based network bring up, there quite simply isn't a way to undo it all and redo it all, so a restart just isn't plain possible. The recommended way instead is to use ifdown and ifup on the interfaces you actually want to reconfigure:

Le redémarrage du réseau sur une machine de bureau entraînera l'arrêt et le redémarrage d'un groupe de service et ne sera jamais recommencé, entraînant généralement l'inutilisation de l'ensemble du système.

Au fur et à mesure que Ubuntu crée un réseau événementiel, il n'y a tout simplement pas un moyen de défaire tout et de refaire tout, donc un redémarrage n'est tout simplement pas possible. La manière recommandée est d'utiliser ifdown et ifup sur les interfaces que vous souhaitez réellement configurer:
sudo ifdown --exclude=lo -a && sudo ifup --exclude=lo -a
A+

Zakhar

D'un autre côté tu as un problème de réception !

 Quality=22/70

Si tu es "près de la borne" tu devrais avoir plutôt pas loin de 70/70 !
Ca explique dans doute qu'il ait essayé des vitesses plus faibles pour passer avec un aussi mauvais signal.

jbmuffat

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

n'a rien changé.
Je vois bien que j'ai un pb de réception. Mais pourquoi? Çà peut ve ir d'où?

xubu1957

Regarde si ton chiffrement de la Box, est bien sur du WPA2 uniquement, voir au § 1 > [Tuto] Pas de Wi-fi ? Eléments importants à vérifier

jbmuffat

la commande donne

jb@jb-HP-Pavilion-Notebook:~$ nmcli dev wifi
*  SSID                             MODE   CHAN  DÉBIT    SIGNAL  BARS  SÉCURITÉ    
*  SFR_6178                         Infra  6     54 Mo/s  31      ▂▄__  WPA1        
   SFR WiFi Mobile                  Infra  6     54 Mo/s  27      ▂___  WPA2 802.1X 
   SFR WiFi FON                     Infra  6     54 Mo/s  25      ▂___              
   DIRECT-9F-HP OfficeJet Pro 8710  Infra  6     54 Mo/s  15      ▂___  WPA2        
jb@jb-HP-Pavilion-Notebook:~$

xubu1957

*  SSID                             MODE   CHAN  DÉBIT    SIGNAL  BARS  SÉCURITÉ    
*  SFR_6178                         Infra  6     54 Mo/s  31      ▂▄__  WPA1

C'est pas du WPA2 !

jbmuffat

Mais du coup, je me demande:
je suis sensé faire quoi?
Qu'est-ce qui fait que ce qui allait très bien ne marche plus?
Pourquoi la borne du lycée n'est plus reconnue?

Merci et bonne soirée.

xubu1957

Lance :

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

jbmuffat

Bonsoir,
c'est toujours la même chose.

xubu1957

Bonsoir,

La Box SFR est à toi ?

Tu as mis un chiffrement WPA2 ?

jbmuffat

La box est à moi. La configuration a été automatique. Je l'ai depuis................je ne sais plus. Et je n'y ai pas touché.
Jusque-là tout marchait bien.
Mais je doute que çà vienne de la box car le wifi au lycée n'est même plus détecté.

xubu1957

Lance :

sudo modprobe wl

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