Bonjour !
J'ai installé Ubuntu 16.04 LTS la semaine dernière sur mon nouveau PC, et depuis impossible de naviguer sur internet.
Je capte le réseau de la box, je peux m'y connecter, mais le signal reste faible et il est presque impossible d'ouvrir une page web. Et puis au bout d'un certain temps je perd la connexion de manière intermittente, bref impossible d'aller sur internet, et même de télécharger de mises à jour ...
Mon ordi n'a pas de prise ethernet, donc je ne suis pas certain que le problème vient du wi-fi étant donné que je n'ai pas pu tester en filaire, mais je le pense parce que le signal reçu est faible alors qu'il était fort et fonctionnait très bien sous Windows.
Voici le retour obtenu avec le script wificheck :
>> cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04 LTS"
>> lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0bda:b006 Realtek Semiconductor Corp.
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 002: ID 0bda:57c4 Realtek Semiconductor Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> lspci -k -nn | grep -A 3 -i net
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
DeviceName: Foxconn WLAN Realtek Sanji RTL8723BE bgn 1x1 + BT 4 LE PCIe+USB NGFF 2230 M.2 WW
Subsystem: Hewlett-Packard Company RTL8723BE PCIe Wireless Network Adapter [103c:804c]
Kernel driver in use: rtl8723be
Kernel modules: rtl8723be
>> sudo lshw -C network
*-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: wlo1
version: 00
numéro de série: 68:14:01:25:d1:c3
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8723be driverversion=4.4.0-21-generic firmware=N/A ip=192.168.2.191 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
ressources: irq:19 portE/S:1000(taille=256) mémoire:91000000-91003fff
>> lsmod
Module Size Used by
drbg 32768 1
ansi_cprng 16384 0
ctr 16384 2
ccm 20480 2
rfcomm 69632 0
bnep 20480 2
hp_wmi 16384 0
sparse_keymap 16384 1 hp_wmi
intel_rapl 20480 0
intel_powerclamp 16384 0
nls_iso8859_1 16384 1
coretemp 16384 0
snd_hda_codec_hdmi 53248 1
snd_hda_codec_realtek 81920 1
snd_hda_codec_generic 77824 1 snd_hda_codec_realtek
kvm 536576 0
arc4 16384 2
irqbypass 16384 1 kvm
punit_atom_debug 16384 0
rtl8723be 135168 0
crct10dif_pclmul 16384 0
btcoexist 180224 1 rtl8723be
crc32_pclmul 16384 0
snd_hda_intel 36864 3
snd_hda_codec 135168 4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel
rtl_pci 40960 1 rtl8723be
rtlwifi 102400 3 btcoexist,rtl_pci,rtl8723be
snd_hda_core 73728 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
mac80211 737280 3 rtl_pci,rtlwifi,rtl8723be
snd_pcm 106496 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core
aesni_intel 167936 4
snd_seq_midi 16384 0
aes_x86_64 20480 1 aesni_intel
snd_seq_midi_event 16384 1 snd_seq_midi
lrw 16384 1 aesni_intel
gf128mul 16384 1 lrw
glue_helper 16384 1 aesni_intel
ablk_helper 16384 1 aesni_intel
cryptd 20480 2 aesni_intel,ablk_helper
snd_rawmidi 32768 1 snd_seq_midi
cfg80211 565248 2 mac80211,rtlwifi
uvcvideo 90112 0
videobuf2_vmalloc 16384 1 uvcvideo
btusb 45056 0
videobuf2_memops 16384 1 videobuf2_vmalloc
btrtl 16384 1 btusb
input_leds 16384 0
joydev 20480 0
snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi
btbcm 16384 1 btusb
videobuf2_v4l2 28672 1 uvcvideo
btintel 16384 1 btusb
rtsx_pci_ms 20480 0
videobuf2_core 36864 2 uvcvideo,videobuf2_v4l2
serio_raw 16384 0
bluetooth 520192 29 bnep,btbcm,btrtl,btusb,rfcomm,btintel
memstick 20480 1 rtsx_pci_ms
v4l2_common 16384 1 videobuf2_v4l2
videodev 176128 4 uvcvideo,v4l2_common,videobuf2_core,videobuf2_v4l2
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 32768 2 snd_pcm,snd_seq
media 24576 2 uvcvideo,videodev
snd 81920 17 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
mei_txe 20480 0
lpc_ich 24576 0
mei 98304 1 mei_txe
soundcore 16384 1 snd
processor_thermal_device 16384 0
intel_soc_dts_iosf 16384 1 processor_thermal_device
shpchp 36864 0
hp_wireless 16384 0
dwc3 90112 0
udc_core 24576 1 dwc3
soc_button_array 16384 0
tpm_crb 16384 0
int3403_thermal 16384 0
ulpi 16384 1 dwc3
int3400_thermal 16384 0
acpi_thermal_rel 16384 1 int3400_thermal
int340x_thermal_zone 16384 2 processor_thermal_device,int3403_thermal
mac_hid 16384 0
parport_pc 32768 0
ppdev 20480 0
lp 20480 0
parport 49152 3 lp,ppdev,parport_pc
autofs4 40960 2
mmc_block 36864 4
rtsx_pci_sdmmc 24576 0
i915 1208320 4
i2c_algo_bit 16384 1 i915
drm_kms_helper 139264 1 i915
syscopyarea 16384 1 drm_kms_helper
psmouse 126976 0
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
fb_sys_fops 16384 1 drm_kms_helper
drm 360448 5 i915,drm_kms_helper
rtsx_pci 53248 2 rtsx_pci_ms,rtsx_pci_sdmmc
wmi 20480 1 hp_wmi
video 40960 1 i915
pinctrl_cherryview 32768 0
fjes 28672 0
sdhci_acpi 16384 0
sdhci 45056 1 sdhci_acpi
>> iwconfig
wlo1 IEEE 802.11bgn ESSID:"BELL900"
Mode:Managed Frequency:2.437 GHz Access Point: F0:82:61:47:D8:09
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=36/70 Signal level=-74 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:4 Missed beacon:0
>> ifconfig -a
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:232 erreurs:0 :0 overruns:0 frame:0
TX packets:232 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1
Octets reçus:16516 (16.5 KB) Octets transmis:16516 (16.5 KB)
wlo1 Link encap:Ethernet HWaddr 68:14:01:25:d1:c3
inet adr:192.168.2.191 Bcast:192.168.2.255 Masque:255.255.255.0
adr inet6: fe80::6a14:1ff:fe25:d1c3/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:60 erreurs:0 :0 overruns:0 frame:0
TX packets:98 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:8692 (8.6 KB) Octets transmis:11678 (11.6 KB)
>> sudo iwlist scan
wlo1 Scan completed :
Cell 01 - Address: F0:82:61:47:D8:09
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=40/70 Signal level=-70 dBm
Encryption key:on
ESSID:"BELL900"
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=000000032ca745bc
Extra: Last beacon: 184ms ago
IE: Unknown: 000742454C4C393030
IE: Unknown: 010882848B960C121824
IE: Unknown: 030106
IE: Unknown: 0706434120010B1E
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: 2D1AAD011BFFFFFF0000000000000000000100000000000000000000
IE: Unknown: 3D1606000500000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F080100000000000040
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DDA70050F204104A0001101044000102103B00010310470010DDAA7C403D0C57F1A7407658C986719010210008536167656D636F6D10230011536167656D636F6D353235305F42656C6C1024000D3235333535353138372D312E301042000F4E51533134313432363030333839381054000800060050F204000110110016536167656D636F6D353235305F42656C6C2D4E515331100800020000103C0001011049000600372A000120
Cell 02 - Address: 90:94:E4:C7:E6:06
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=30/70 Signal level=-80 dBm
Encryption key:on
ESSID:"portuguesedickbroom"
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=0000055ec8321176
Extra: Last beacon: 152ms ago
IE: Unknown: 0013706F72747567756573656469636B62726F6F6D
IE: Unknown: 010882848B960C121824
IE: Unknown: 03010B
IE: Unknown: 050400010000
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: 2D1A2C181EFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D160B000000000000000000000000000000000000000000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD1E00904C332C181EFFFF000000000000000000000000000000000000000000
IE: Unknown: DD1A00904C340B000000000000000000000000000000000000000000
IE: Unknown: DD0600E04C020160
IE: Unknown: DD180050F204104A00011010440001021049000600372A000120
>> uname -r -m
4.4.0-21-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
>> sudo rfkill list
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
J'ai fouillé un peu le forum et d'autres sites, mais impossible de trouver un solution qui fonctionne pour moi. J’apprécierais beaucoup un peu d'aide 🙂
Merci !