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#1 Le 26/12/2015, à 19:48

bMarwene

[Resolu] Wifi instable

Bonjour à tous,

J'ai un probeleme avec mon wifi, au debut juste apres l'installation de Ubuntu 14.04 il y a une semaine, le wifi n etait pas activé alors en regardant dans le forum d Ubuntu j ai reussi a l activer mais le probeleme c est qu il n est pas stable, lorque je demarre l ordi ça fonctionne pendant 15 minutes a peu pres et ensuite il s arrete malgre que  Ubuntu me dit que je suis bien connecté à mon resaeau wifi

Quelqu un sait comment je peux faire ?

Dernière modification par bMarwene (Le 28/12/2015, à 12:33)

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#2 Le 27/12/2015, à 09:00

moko138

Re : [Resolu] Wifi instable

Lis l'encadré dans le sous-forum "wifi". Car nos boules de cristal...


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#3 Le 27/12/2015, à 18:56

bMarwene

Re : [Resolu] Wifi instable

ah Oui, Excuse-moi je l'ai pas lu avant de poster
Voila les résultats

cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.3 LTS"
lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 0bda:b728 Realtek Semiconductor Corp. 
Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 003: ID 5986:0652 Acer, Inc 
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lspci
00:00.0 Host bridge: Intel Corporation ValleyView SSA-CUnit (rev 0e)
00:02.0 VGA compatible controller: Intel Corporation ValleyView Gen7 (rev 0e)
00:13.0 SATA controller: Intel Corporation ValleyView 6-Port SATA AHCI Controller (rev 0e)
00:14.0 USB controller: Intel Corporation ValleyView USB xHCI Host Controller (rev 0e)
00:1a.0 Encryption controller: Intel Corporation ValleyView SEC (rev 0e)
00:1b.0 Audio device: Intel Corporation ValleyView High Definition Audio Controller (rev 0e)
00:1c.0 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e)
00:1c.2 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e)
00:1c.3 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e)
00:1f.0 ISA bridge: Intel Corporation ValleyView Power Control Unit (rev 0e)
00:1f.3 SMBus: Intel Corporation ValleyView SMBus Controller (rev 0e)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)

lspci -nn | grep -i ne
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
lspci -k
00:00.0 Host bridge: Intel Corporation ValleyView SSA-CUnit (rev 0e)
	Subsystem: Lenovo Device 3905
	Kernel driver in use: iosf_mbi_pci
00:02.0 VGA compatible controller: Intel Corporation ValleyView Gen7 (rev 0e)
	Subsystem: Lenovo Device 3905
	Kernel driver in use: i915
00:13.0 SATA controller: Intel Corporation ValleyView 6-Port SATA AHCI Controller (rev 0e)
	Subsystem: Lenovo Device 3905
	Kernel driver in use: ahci
00:14.0 USB controller: Intel Corporation ValleyView USB xHCI Host Controller (rev 0e)
	Subsystem: Lenovo Device 3905
	Kernel driver in use: xhci_hcd
00:1a.0 Encryption controller: Intel Corporation ValleyView SEC (rev 0e)
	Subsystem: Lenovo Device 3905
	Kernel driver in use: mei_txe
00:1b.0 Audio device: Intel Corporation ValleyView High Definition Audio Controller (rev 0e)
	Subsystem: Lenovo Device 3905
	Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e)
	Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e)
	Kernel driver in use: pcieport
00:1c.3 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e)
	Kernel driver in use: pcieport
00:1f.0 ISA bridge: Intel Corporation ValleyView Power Control Unit (rev 0e)
	Subsystem: Lenovo Device 3905
	Kernel driver in use: lpc_ich
00:1f.3 SMBus: Intel Corporation ValleyView SMBus Controller (rev 0e)
	Subsystem: Lenovo Device 3905
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
	Subsystem: Lenovo Device b736
	Kernel driver in use: rtl8723be
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
	Subsystem: Lenovo Device 3816
	Kernel driver in use: r8169
sudo lshw -C network
[sudo] password for marwene: 
  *-network               
       description: Interface réseau sans fil
       produit: RTL8723BE 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: c0:38:96:46:68:b7
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8723be driverversion=3.19.0-42-generic firmware=N/A ip=192.168.1.16 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       ressources: irq:18 portE/S:2000(taille=256) mémoire:90500000-90503fff
  *-network
       description: Ethernet interface
       produit: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       fabriquant: Realtek Semiconductor Co., Ltd.
       identifiant matériel: 0
       information bus: pci@0000:03:00.0
       nom logique: eth0
       version: 10
       numéro de série: 28:d2:44:f8:ff:1a
       taille: 10Mbit/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=half firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       ressources: irq:89 portE/S:1000(taille=256) mémoire:90404000-90404fff mémoire:90400000-90403fff
lsmod
Module                  Size  Used by
ctr                    16384  2 
ccm                    20480  2 
bnep                   20480  2 
rfcomm                 69632  8 
nls_iso8859_1          16384  1 
arc4                   16384  2 
uvcvideo               90112  0 
videobuf2_vmalloc      16384  1 uvcvideo
rtl8723be              94208  0 
videobuf2_memops       16384  1 videobuf2_vmalloc
btcoexist              53248  1 rtl8723be
videobuf2_core         53248  1 uvcvideo
rtl8723_common         24576  1 rtl8723be
v4l2_common            16384  1 videobuf2_core
rtl_pci                28672  1 rtl8723be
rtsx_usb_ms            20480  0 
rtlwifi                73728  2 rtl_pci,rtl8723be
memstick               20480  1 rtsx_usb_ms
videodev              159744  3 uvcvideo,v4l2_common,videobuf2_core
media                  24576  2 uvcvideo,videodev
mac80211              708608  3 rtl_pci,rtlwifi,rtl8723be
snd_hda_codec_hdmi     53248  1 
cfg80211              524288  2 mac80211,rtlwifi
snd_hda_codec_conexant    24576  1 
snd_hda_codec_generic    69632  1 snd_hda_codec_conexant
intel_rapl             20480  0 
intel_powerclamp       20480  0 
coretemp               16384  0 
kvm                   479232  0 
crct10dif_pclmul       16384  0 
crc32_pclmul           16384  0 
cryptd                 20480  0 
joydev                 20480  0 
serio_raw              16384  0 
snd_hda_intel          36864  4 snd_hda_codec_hdmi
snd_hda_controller     32768  1 snd_hda_intel
btusb                  40960  0 
snd_hda_codec         143360  5 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
bluetooth             491520  22 bnep,btusb,rfcomm
lpc_ich                24576  0 
snd_hwdep              20480  1 snd_hda_codec
shpchp                 40960  0 
snd_soc_rt5640         94208  0 
mei_txe                20480  0 
snd_intel_sst_acpi     16384  0 
mei                    90112  1 mei_txe
snd_intel_sst_core     73728  1 snd_intel_sst_acpi
snd_soc_rl6231         16384  1 snd_soc_rt5640
snd_soc_sst_mfld_platform    77824  1 snd_intel_sst_core
snd_soc_core          196608  2 snd_soc_rt5640,snd_soc_sst_mfld_platform
snd_compress           20480  1 snd_soc_core
snd_pcm_dmaengine      16384  1 snd_soc_core
snd_pcm               106496  8 snd_soc_rt5640,snd_soc_core,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_soc_sst_mfld_platform,snd_hda_controller,snd_pcm_dmaengine
ideapad_laptop         24576  0 
sparse_keymap          16384  1 ideapad_laptop
snd_seq_midi           16384  0 
snd_seq_midi_event     16384  1 snd_seq_midi
8250_fintek            16384  0 
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_pcm,snd_seq
snd                    86016  20 snd_soc_core,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_soc_sst_mfld_platform,snd_seq_device,snd_compress
dw_dmac                16384  0 
i915                 1048576  3 
dw_dmac_core           24576  1 dw_dmac
intel_smartconnect     16384  0 
i2c_hid                20480  0 
video                  20480  1 i915
hid                   110592  1 i2c_hid
drm_kms_helper        126976  1 i915
snd_soc_sst_acpi       16384  0 
soundcore              16384  2 snd,snd_hda_codec
i2c_designware_platform    16384  0 
i2c_designware_core    16384  1 i2c_designware_platform
rfkill_gpio            16384  0 
drm                   344064  5 i915,drm_kms_helper
pwm_lpss_platform      16384  0 
spi_pxa2xx_platform    24576  0 
pwm_lpss               16384  1 pwm_lpss_platform
8250_dw                16384  0 
i2c_algo_bit           16384  1 i915
iosf_mbi               16384  1 intel_rapl
mac_hid                16384  0 
parport_pc             32768  0 
ppdev                  20480  0 
lp                     20480  0 
parport                45056  3 lp,ppdev,parport_pc
rtsx_usb_sdmmc         28672  0 
rtsx_usb               24576  2 rtsx_usb_sdmmc,rtsx_usb_ms
psmouse               114688  0 
r8169                  81920  0 
ahci                   36864  3 
mii                    16384  1 r8169
iwconfig
eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"Bbox-51D22A0A"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 64:7C:34:E1:EF:2C   
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:off
          Link Quality=62/70  Signal level=-48 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:5   Missed beacon:0

lo        no wireless extensions.

libahci                32768  1 ahci
sdhci_acpi             16384  0 
sdhci                  45056  1 sdhci_acpi
ifconfig
eth0      Link encap:Ethernet  HWaddr 28:d2:44:f8:ff:1a  
          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)

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:314 erreurs:0 :0 overruns:0 frame:0
          TX packets:314 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0 
          Octets reçus:26445 (26.4 KB) Octets transmis:26445 (26.4 KB)

wlan0     Link encap:Ethernet  HWaddr c0:38:96:46:68:b7  
          inet adr:192.168.1.16  Bcast:192.168.1.255  Masque:255.255.255.0
          adr inet6: fe80::c238:96ff:fe46:68b7/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:1636 erreurs:0 :0 overruns:0 frame:0
          TX packets:1232 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:689675 (689.6 KB) Octets transmis:202404 (202.4 KB)
 sudo iwlist scan
eth0      Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: 64:7C:34:E1:EF:2C
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=60/70  Signal level=-50 dBm  
                    Encryption key:on
                    ESSID:"Bbox-51D22A0A"
                    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=000000114c26c60d
                    Extra: Last beacon: 60ms ago
                    IE: Unknown: 000D42626F782D3531443232413041
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: Unknown: 32040C183060
                    IE: Unknown: 2D1AEC0103FFFFFF00000000000000000000000000000C1846471100
                    IE: Unknown: 3D1601000700000000000000000000000000000000000000
                    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: 0B05050017127A
                    IE: Unknown: 7F0101
                    IE: Unknown: DD07000C4307000000
                    IE: Unknown: 0706465220010D10
          Cell 02 - Address: 64:7C:34:E1:EF:2D
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=60/70  Signal level=-50 dBm  
                    Encryption key:off
                    ESSID:"Bouygues Telecom Wi-Fi"
                    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=000000114c26e241
                    Extra: Last beacon: 60ms ago
                    IE: Unknown: 0016426F7579677565732054656C65636F6D2057692D4669
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: Unknown: 32040C183060
                    IE: Unknown: 2D1AEC0103FFFFFF00000000000000000000000000000C1846471100
                    IE: Unknown: 3D1601000700000000000000000000000000000000000000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B05050017127A
                    IE: Unknown: 7F0101
                    IE: Unknown: DD07000C4307000000
                    IE: Unknown: 0706465220010D10

lo        Interface doesn't support scanning
uname -r -m
3.19.0-42-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 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        28:D2:44:F8:FF:1A

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off


- Device: wlan0  [Bbox-51D22A0A] -----------------------------------------------
  Type:              802.11 WiFi
  Driver:            rtl8723be
  State:             connected
  Default:           yes
  HW Address:        C0:38:96:46:68:B7

  Capabilities:
    Speed:           72 Mb/s

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

  Wireless Access Points (* = current AP)
    SFR_C590:        Infra, 24:95:04:B5:C5:94, Freq 2437 MHz, Rate 54 Mb/s, Strength 50 WPA
    SFR WiFi Mobile: Infra, 8A:95:04:8A:6B:8F, Freq 2412 MHz, Rate 54 Mb/s, Strength 44 WPA2 Enterprise
    FREEBOX_SILVANA_8A: Infra, AA:23:61:45:4B:2C, Freq 2437 MHz, Rate 54 Mb/s, Strength 47 WPA
    SFR_6B88:        Infra, 24:95:04:8A:6B:8C, Freq 2412 MHz, Rate 54 Mb/s, Strength 44 WPA
    SFR WiFi Mobile: Infra, CA:95:04:B5:C5:97, Freq 2437 MHz, Rate 54 Mb/s, Strength 47 WPA2 Enterprise
    Bouygues Telecom Wi-Fi: Infra, 64:7C:34:E1:EF:2D, Freq 2412 MHz, Rate 54 Mb/s, Strength 74
    SFR WiFi FON:    Infra, 8A:95:04:8A:6B:8D, Freq 2412 MHz, Rate 54 Mb/s, Strength 50
    SFR WiFi FON:    Infra, CA:95:04:B5:C5:95, Freq 2437 MHz, Rate 54 Mb/s, Strength 50
    *Bbox-51D22A0A:  Infra, 64:7C:34:E1:EF:2C, Freq 2412 MHz, Rate 54 Mb/s, Strength 72 WPA WPA2
    FreeWifi:        Infra, AA:23:61:45:4B:2E, Freq 2437 MHz, Rate 54 Mb/s, Strength 47

  IPv4 Settings:
    Address:         192.168.1.16
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.1.254

    DNS:             192.168.1.254
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: hci0: Bluetooth
	Soft blocked: yes
	Hard blocked: no
3: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no

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#4 Le 27/12/2015, à 21:53

moko138

Re : [Resolu] Wifi instable

Ah ! Colle ceci
"RTL8723BE"  b723  résolu
dans le champ de recherche "forum" en haut à droite...


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Un utilitaire précieux : ncdu
Photo, mini-tutoriel :  À la découverte de dcraw

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#5 Le 28/12/2015, à 12:33

bMarwene

Re : [Resolu] Wifi instable

Oui ça marche, la connexion fonctionne normalement depuis plus de deux heures  c bn et c grâce à la commande 

echo "options rtl8723be fwlps=0" | sudo tee /etc/modprobe.d/rtl8723be.conf

Merci beaucoup smile

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#6 Le 28/12/2015, à 13:47

moko138

Re : [Resolu] Wifi instable

smile
Il n'y a plus qu'à marquer "[Résolu]" dans le titre de ton fil, en modifiant ton premier message.
De cette façon, ton fil servira aux suivants smile merci pour eux !


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