Ubuntu-fr

Masshat

Probleme WIFI

Merci de m'aider, SVP.

Bonjour, je soumet ici mon problème car je n'est trouvé aucun cas similaire au miens sur le net et sur tout les forum. Pour commencer j'ai installer ubuntu sur ma machine lenovo thinkpad E520, pendant l’installation il ma demandé de se connecter au réseaux et je me suis connecté le plus normalement du monde, l’installation c'est bien déroule, et ubuntu fut installer sur ma machine normalement, j'ai installer ensuite des mises a jour, surfer sur internet, redémarrer ma machine plusieurs fois et ainsi de suite tout fonctionnait bien comme il faut.

mais subitement, un jour j'allume ma machine et soudain il ne veut plus se connecter au réseaux?!!!, je n'est rien modifier comme fichier et je n'est rien configurer ni installer un nouveau driver, ni passer en mode root, j'ai redémarrer ma machine plusieurs fois, sans résultat.

j'ai désinstaller ubuntu et essayer de le réinstaller même chose il ne veut plus se connecter au réseaux?!!!(encore une fois), mais cette fois j'ai remarquer autre chose, c'est que quand je me rapproche a un mètre de mon modem ou box, il se connecte mais quand je m'éloigne il reste toujours connecté mais y'a pas d'internet, et si je me deco il ne pourra plus se reconnecter. il boucle indéfiniment on essayant de se connecter apres il me fais disconnect.

voila le résultat des commandes:

cat /etc/lsb-release

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

lsusb

Bus 002 Device 003: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1)
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 5986:03b3 Acer, Inc 
Bus 001 Device 003: ID 0930:6544 Toshiba Corp. Kingston DataTraveler 2.0 Stick (2GB)
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

lspci

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.7 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 8 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
03:00.0 System peripheral: Ricoh Co Ltd MMC/SD Host Controller (rev 07)
08:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)

lspci -nn | grep -i net

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06)
08:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev 01)

lspci -k

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
	Subsystem: Lenovo Device 21e2
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: i915
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: mei_me
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
	Kernel driver in use: pcieport
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
	Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4)
	Kernel driver in use: pcieport
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
	Kernel driver in use: pcieport
00:1c.7 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 8 (rev b4)
	Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: lpc_ich
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
	Subsystem: Lenovo Device 21e2
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: r8169
03:00.0 System peripheral: Ricoh Co Ltd MMC/SD Host Controller (rev 07)
	Subsystem: Lenovo Device 21e2
	Kernel driver in use: sdhci-pci
08:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
	Subsystem: Realtek Semiconductor Co., Ltd. Device 8195
	Kernel driver in use: rtl8192ce

sudo lshw -C network

 *-network               
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 06
       serial: 3c:97:0e:29:a7:4c
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-2.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:40 ioport:5000(size=256) memory:d0404000-d0404fff memory:d0400000-d0403fff
  *-network
       description: Wireless interface
       product: RTL8188CE 802.11b/g/n WiFi Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: wlan0
       version: 01
       serial: e0:06:e6:c5:bc:3f
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8192ce driverversion=3.13.0-24-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       resources: irq:19 ioport:3000(size=256) memory:d1d00000-d1d03fff

lsmod

Module                  Size  Used by
joydev                 17381  0 
intel_rapl             18773  0 
x86_pkg_temp_thermal    14205  0 
intel_powerclamp       14705  0 
arc4                   12608  2 
coretemp               13435  0 
rtl8192ce              53550  0 
rtl_pci                26690  1 rtl8192ce
dm_crypt               23177  0 
snd_hda_codec_hdmi     46207  1 
kvm_intel             143060  0 
rtlwifi                63475  2 rtl_pci,rtl8192ce
snd_hda_codec_conexant    57441  1 
rtl8192c_common        53172  1 rtl8192ce
snd_hda_intel          52355  3 
kvm                   451511  1 kvm_intel
mac80211              626489  3 rtl_pci,rtlwifi,rtl8192ce
snd_hda_codec         192906  3 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel
uvcvideo               80885  0 
crct10dif_pclmul       14289  0 
videobuf2_vmalloc      13216  1 uvcvideo
crc32_pclmul           13113  0 
videobuf2_memops       13362  1 videobuf2_vmalloc
snd_hwdep              13602  1 snd_hda_codec
videobuf2_core         40664  1 uvcvideo
ghash_clmulni_intel    13259  0 
thinkpad_acpi          80817  1 
aesni_intel            55624  0 
snd_pcm               102099  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
videodev              134688  2 uvcvideo,videobuf2_core
nvram                  14411  1 thinkpad_acpi
aes_x86_64             17131  1 aesni_intel
lrw                    13286  1 aesni_intel
snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
gf128mul               14951  1 lrw
snd_seq_midi           13324  0 
dm_multipath           22873  0 
cfg80211              484040  2 mac80211,rtlwifi
snd_seq_midi_event     14899  1 snd_seq_midi
scsi_dh                14882  1 dm_multipath
snd_rawmidi            30144  1 snd_seq_midi
glue_helper            13990  1 aesni_intel
psmouse               102222  0 
btusb                  32412  0 
snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
ablk_helper            13597  1 aesni_intel
serio_raw              13462  0 
cryptd                 20359  3 ghash_clmulni_intel,aesni_intel,ablk_helper
mei_me                 18627  0 
snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer              29482  2 snd_pcm,snd_seq
mei                    82274  1 mei_me
lpc_ich                21080  0 
snd                    69238  18 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,thinkpad_acpi,snd_seq_device,snd_seq_midi
soundcore              12680  1 snd
bnep                   19624  2 
mac_hid                13205  0 
rfcomm                 69160  8 
bluetooth             395423  22 bnep,btusb,rfcomm
parport_pc             32701  0 
ppdev                  17671  0 
lp                     17759  0 
parport                42348  3 lp,ppdev,parport_pc
squashfs               48362  1 
overlayfs              27916  1 
nls_iso8859_1          12713  1 
dm_mirror              22135  0 
dm_region_hash         20862  1 dm_mirror
dm_log                 18411  2 dm_region_hash,dm_mirror
usb_storage            62209  1 
i915                  783485  3 
sdhci_pci              23172  0 
sdhci                  43015  1 sdhci_pci
i2c_algo_bit           13413  1 i915
drm_kms_helper         52758  1 i915
drm                   302817  4 i915,drm_kms_helper
ahci                   25819  1 
r8169                  67581  0 
libahci                32168  1 ahci
mii                    13934  1 r8169
video                  19476  1 i915

iwconfig

eth0      no wireless extensions.

lo        no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr=2347 B   Fragment thr:off
          Encryption key:off
          Power Management:off

ifconfig

eth0      Link encap:Ethernet  HWaddr 3c:97:0e:29:a7:4c  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

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:151 errors:0 dropped:0 overruns:0 frame:0
          TX packets:151 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:10785 (10.7 KB)  TX bytes:10785 (10.7 KB)

wlan0     Link encap:Ethernet  HWaddr e0:06:e6:c5:bc:3f  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

sudo iwlist scan

eth0      Interface doesn't support scanning.

lo        Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: 7E:A3:DB:D2:B2:75
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=32/70  Signal level=-78 dBm  
                    Encryption key:on
                    ESSID:""
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    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=000000023ef53809
                    Extra: Last beacon: 36ms ago
                    IE: Unknown: 0000
                    IE: Unknown: 010482848B96
                    IE: Unknown: 03010B
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 050400010106
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 2A0104
                    IE: Unknown: 32080C1218243048606C
          Cell 02 - Address: 7E:A3:DB:D2:B2:76
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=32/70  Signal level=-78 dBm  
                    Encryption key:on
                    ESSID:""
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    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=000000023ef53ce2
                    Extra: Last beacon: 32ms ago
                    IE: Unknown: 0000
                    IE: Unknown: 010482848B96
                    IE: Unknown: 03010B
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 050400010106
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 2A0104
                    IE: Unknown: 32080C1218243048606C
          Cell 03 - Address: 7E:A3:DB:D2:B2:77
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=32/70  Signal level=-78 dBm  
                    Encryption key:off
                    ESSID:"FreeWifi"
                    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=000000023ef54173
                    Extra: Last beacon: 32ms ago
                    IE: Unknown: 00084672656557696669
                    IE: Unknown: 010482848B96
                    IE: Unknown: 03010B
                    IE: Unknown: 050400010000
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 2A0104
                    IE: Unknown: 32080C1218243048606C
          Cell 04 - Address: 7E:A3:DB:D2:B2:74
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=32/70  Signal level=-78 dBm  
                    Encryption key:on
                    ESSID:"omarfarid"
                    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=000000023ef53396
                    Extra: Last beacon: 36ms ago
                    IE: Unknown: 00096F6D61726661726964
                    IE: Unknown: 010482848B96
                    IE: Unknown: 03010B
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 050400010100
                    IE: Unknown: 2A0104
                    IE: Unknown: 32080C1218243048606C

uname -r -m

3.13.0-24-generic x86_64

cat  /etc/network/interfaces

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

nm-tool

NetworkManager Tool

State: disconnected

- Device: wlan0 ----------------------------------------------------------------
  Type:              802.11 WiFi
  Driver:            rtl8192ce
  State:             disconnected
  Default:           no
  HW Address:        E0:06:E6:C5:BC:3F

  Capabilities:

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

  Wireless Access Points 
    FreeWifi_secure: Infra, 14:0C:76:8C:8E:B2, Freq 2462 MHz, Rate 54 Mb/s, Strength 100 WPA2 Enterprise
    FreeWifi:        Infra, 7E:A3:DB:D2:B2:77, Freq 2462 MHz, Rate 54 Mb/s, Strength 47
    freebox_AHME:    Infra, 14:0C:76:8C:8E:B0, Freq 2462 MHz, Rate 54 Mb/s, Strength 4 WPA
    omarfarid:       Infra, 7E:A3:DB:D2:B2:74, Freq 2462 MHz, Rate 54 Mb/s, Strength 47 WPA
    FreeWifi:        Infra, 14:0C:76:8C:8E:B1, Freq 2462 MHz, Rate 54 Mb/s, Strength 4


- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        3C:97:0E:29:A7:4C

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

Cordialement.

Dernière modification par Masshat (Le 06/10/2014, à 04:53)

Julius22

Re : Probleme WIFI

Bonjour,
   Dans la liste des réseaux Wi-Fi détectés donnée par le retour de nm-tool, lequel correspond au tien ?

---

Membre de l'April (www.april.org)
Pour éviter de perdre vos données, utilisez des formats ouverts (cf. www.formats-ouverts.org).
Regardez l'utilisation moyenne de votre processeur et pensez à BOINC.

Masshat

Re : Probleme WIFI

Bonsoir:
omarfarid

Julius22

Re : Probleme WIFI

Bonjour,
   Tout ce que je vois, c'est que le niveau du signal est un peu faible… Après, je ne vois rien de spécial.

---

Membre de l'April (www.april.org)
Pour éviter de perdre vos données, utilisez des formats ouverts (cf. www.formats-ouverts.org).
Regardez l'utilisation moyenne de votre processeur et pensez à BOINC.

Masshat

Re : Probleme WIFI

Oui, mais sur Windows tout fonctionne bien, même avant sur ubuntu tout fonctionnait comme sur des roulettes, mais subitement il ne veut plus se connecter?!

Julius22

Re : Probleme WIFI

Ça peut être dû à une mise à jour du pilote provoquant un fonctionnement moins bon.

---

Membre de l'April (www.april.org)
Pour éviter de perdre vos données, utilisez des formats ouverts (cf. www.formats-ouverts.org).
Regardez l'utilisation moyenne de votre processeur et pensez à BOINC.