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isabelle bouchoule

le wifi ne voit plus le réseau

Bonjour,

Je suis sur ubuntu 14.04 . La wifi marchait bien mais ce soir, alors que je réglais les paramètres de mise en veille il s'est arrêté de marcher complètement. Il ne voit plus aucun réseau alors que d'habitude il en voit plein : le mien, celui de mes voisins. Par contre, je peux encore communiquer avec l'imprimante, donc ce n'est pas du hard. Quand je fais "iwlist wlan0 scan", j'ai la réponse "wlan0     No scan results".

Voila les retours des commandes

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.1 LTS"

$ 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 5986:0248 Acer, Inc 
Bus 003 Device 002: ID 13d3:3394 IMC Networks 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

$ 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.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (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: Realtek Semiconductor Co., Ltd. RTL8723AE PCIe Wireless Network Adapter
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5287 (rev 01)
03:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)

$ 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.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (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: Realtek Semiconductor Co., Ltd. RTL8723AE PCIe Wireless Network Adapter
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5287 (rev 01)
03:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)
isabelle@ubuntu-W54-55SU1-SUW:~$ lspci -nn | grep -i net
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723AE PCIe Wireless Network Adapter [10ec:8723]
03:00.1 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 12)

$ lspci -k
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
	Subsystem: CLEVO/KAPOK Computer Device 5455
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: i915
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: snd_hda_intel
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: xhci_hcd
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: mei_me
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
	Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
	Kernel driver in use: pcieport
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d5)
	Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 05)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: lpc_ich
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
	Subsystem: CLEVO/KAPOK Computer Device 5455
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723AE PCIe Wireless Network Adapter
	Subsystem: AzureWave Device 2114
	Kernel driver in use: rtl8723ae
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5287 (rev 01)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: rtsx_pci
03:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)
	Subsystem: CLEVO/KAPOK Computer Device 5455
	Kernel driver in use: r8169

$ sudo lshw -C network
  *-network               
       description: Interface réseau sans fil
       produit: RTL8723AE PCIe Wireless Network Adapter
       fabriquant: Realtek Semiconductor Co., Ltd.
       identifiant matériel: 0
       information bus: pci@0000:02:00.0
       nom logique: wlan0
       version: 00
       numéro de série: 54:27:1e:0a:39:ef
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8723ae driverversion=3.13.0-41-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       ressources: irq:18 portE/S:e000(taille=256) mémoire:f7d00000-f7d03fff
  *-network
       description: Ethernet interface
       produit: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       fabriquant: Realtek Semiconductor Co., Ltd.
       identifiant matériel: 0.1
       information bus: pci@0000:03:00.1
       nom logique: eth0
       version: 12
       numéro de série: 80:fa:5b:00:59:a1
       taille: 1Gbit/s
       capacité: 1Gbit/s
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: 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=full firmware=rtl8411-2_0.0.1 07/08/13 ip=192.168.0.29 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       ressources: irq:42 portE/S:d000(taille=256) mémoire:f7c14000-f7c14fff mémoire:f7c10000-f7c13fff

$ lsmod
Module                  Size  Used by
md4                    12595  0 
x86_pkg_temp_thermal    14205  0 
intel_powerclamp       14705  0 
coretemp               13435  0 
kvm_intel             143187  0 
kvm                   455835  1 kvm_intel
crct10dif_pclmul       14289  0 
crc32_pclmul           13113  0 
ghash_clmulni_intel    13216  0 
snd_hda_codec_hdmi     46368  1 
cryptd                 20359  1 ghash_clmulni_intel
snd_hda_codec_realtek    65580  1 
dm_multipath           22873  0 
scsi_dh                14882  1 dm_multipath
snd_hda_intel          56451  5 
snd_hda_codec         192906  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep              13602  1 snd_hda_codec
snd_pcm               102099  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
joydev                 17381  0 
serio_raw              13462  0 
snd_seq_midi           13324  0 
snd_seq_midi_event     14899  1 snd_seq_midi
arc4                   12608  2 
snd_rawmidi            30144  1 snd_seq_midi
rtl8723ae              81882  0 
rtl8723_common         23361  1 rtl8723ae
snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
rtl_pci                26690  1 rtl8723ae
rtlwifi                63475  2 rtl_pci,rtl8723ae
snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
uvcvideo               80885  0 
rfcomm                 69160  8 
mac80211              630653  3 rtl_pci,rtlwifi,rtl8723ae
lpc_ich                21080  0 
bnep                   19624  2 
snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
videobuf2_vmalloc      13216  1 uvcvideo
videobuf2_memops       13362  1 videobuf2_vmalloc
rtsx_pci_ms            18151  0 
videobuf2_core         40664  1 uvcvideo
cfg80211              484040  2 mac80211,rtlwifi
memstick               16966  1 rtsx_pci_ms
videodev              134688  2 uvcvideo,videobuf2_core
btusb                  32412  0 
snd_timer              29482  2 snd_pcm,snd_seq
bluetooth             391136  22 bnep,btusb,rfcomm
snd                    69322  21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
mei_me                 18627  0 
mei                    82276  1 mei_me
soundcore              12680  1 snd
binfmt_misc            17468  1 
parport_pc             32701  0 
ppdev                  17671  0 
mac_hid                13205  0 
nls_utf8               12557  1 
cifs                  462779  2 
fscache                63988  1 cifs
lp                     17759  0 
parport                42348  3 lp,ppdev,parport_pc
btrfs                 835954  0 
xor                    21411  1 btrfs
raid6_pq               97812  1 btrfs
libcrc32c              12644  1 btrfs
dm_mirror              22135  0 
dm_region_hash         20862  1 dm_mirror
dm_log                 18411  2 dm_region_hash,dm_mirror
rtsx_pci_sdmmc         23274  0 
psmouse               106714  0 
ahci                   25819  3 
libahci                32716  1 ahci
wmi                    19177  0 
i915                  784207  6 
video                  19476  1 i915
r8169                  67581  0 
i2c_algo_bit           13413  1 i915
mii                    13934  1 r8169
drm_kms_helper         55071  1 i915
rtsx_pci               46202  2 rtsx_pci_ms,rtsx_pci_sdmmc
drm                   303102  5 i915,drm_kms_helper

$ 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
          Power Management:off

$ ifconfig
eth0      Link encap:Ethernet  HWaddr 80:fa:5b:00:59:a1  
          inet adr:192.168.0.29  Bcast:192.168.0.255  Masque:255.255.255.0
          adr inet6: fe80::82fa:5bff:fe00:59a1/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:53702 erreurs:0 :0 overruns:0 frame:0
          TX packets:45689 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:52795132 (52.7 MB) Octets transmis:5758239 (5.7 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:7069 erreurs:0 :0 overruns:0 frame:0
          TX packets:7069 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0 
          Octets reçus:1929981 (1.9 MB) Octets transmis:1929981 (1.9 MB)

wlan0     Link encap:Ethernet  HWaddr 54:27:1e:0a:39:ef  
          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)

$ sudo iwlist scan
eth0      Interface doesn't support scanning.

lo        Interface doesn't support scanning.

wlan0     No scan results

$ uname -r -m 
3.13.0-41-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: connected (global)

- Device: eth0  [Connexion filaire 1] ------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             connected
  Default:           yes
  HW Address:        80:FA:5B:00:59:A1

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

  Wired Properties
    Carrier:         on

  IPv4 Settings:
    Address:         192.168.0.29
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.0.254

    DNS:             192.168.0.254


- Device: wlan0 ----------------------------------------------------------------
  Type:              802.11 WiFi
  Driver:            rtl8723ae
  State:             disconnected
  Default:           no
  HW Address:        54:27:1E:0A:39:EF

  Capabilities:

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

  Wireless Access Points 

$ sudo rfkill list
0: hci0: Bluetooth
	Soft blocked: yes
	Hard blocked: no
1: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no

isabelle bouchoule

Re : le wifi ne voit plus le réseau

J'oubliais : merci beaucoup par avance à celui ou celle qui se penchera sur mon problème !

isabelle bouchoule

Re : le wifi ne voit plus le réseau

Bonjour à tous,

Le wifi s'est remis à fonctionner pour une raison inconnue. Il semble donc assez instable.
Il n'y a donc pas de grande urgence à réparer ce problème mais si quelqu'un connait l'origine de cette instabilité et comment l'empêcher, cela m'intéresse toujours.

Merci d'avance,

    Isabelle.

nam1962

Re : le wifi ne voit plus le réseau

a tout hasard, jette un coup d'oeil là : http://forum.ubuntu-fr.org/viewtopic.php?pid=16428601

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[ Modéré ]

isabelle bouchoule

Re : le wifi ne voit plus le réseau

MErci pour le lien ! J'étais absente quelques temps. Mon wifi est toujours très instable. Je regarde le lien tout de suite.