Bonjour à toutes et tous,
Depuis la migration vers 18.04, je n'ai plus d'accès au Wifi avec mon ordinateur portable : il m'indique qu'aucun adaptateur wifi n'a été trouvé ...
Après de multiples tentatives plus ou moins fructueuses en cherchant dans les différentes discussions concernant la RTL8723BE je m'en remets à vos conseils éclairés car j'ai bien peur de n'avoir fait qu'empirer les choses.
Voici les éléments donnés par Wificheck :
>> cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
>> lsusb
Bus 002 Device 004: ID 0bda:b728 Realtek Semiconductor Corp.
Bus 002 Device 003: ID 5986:0652 Acer, Inc
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 003: ID 046d:c077 Logitech, Inc. M105 Optical Mouse
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
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 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> lspci -k -nn | grep -A 3 -i net
01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Lenovo RTL8723BE PCIe Wireless Network Adapter [17aa:b736]
Kernel modules: rtl8723be
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:3812]
Kernel driver in use: r8169
Kernel modules: r8169
>> sudo lshw -C network
*-network NON-RÉCLAMÉ
description: Network controller
produit: RTL8723BE PCIe Wireless Network Adapter
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:01:00.0
version: 00
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list
configuration: latency=0
ressources: portE/S:3000(taille=256) mémoire:f0b00000-f0b03fff
*-network
description: Ethernet interface
produit: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:02:00.0
nom logique: enp2s0
version: 10
numéro de série: 28:d2:44:ea:b8:8a
taille: 100Mbit/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=rtl8168g-3_0.0.1 04/23/13 ip=192.168.1.11 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
ressources: irq:31 portE/S:2000(taille=256) mémoire:f0a04000-f0a04fff mémoire:f0a00000-f0a03fff
>> lsmod
Module Size Used by
rfcomm 77824 4
bnep 20480 2
binfmt_misc 20480 1
edac_mce_amd 28672 0
kvm_amd 86016 0
kvm 593920 1 kvm_amd
irqbypass 16384 1 kvm
crct10dif_pclmul 16384 0
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
pcbc 16384 0
aesni_intel 188416 0
aes_x86_64 20480 1 aesni_intel
crypto_simd 16384 1 aesni_intel
glue_helper 16384 1 aesni_intel
cryptd 24576 3 crypto_simd,ghash_clmulni_intel,aesni_intel
uvcvideo 86016 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
rtsx_usb_ms 20480 0
memstick 16384 1 rtsx_usb_ms
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_core 40960 2 uvcvideo,videobuf2_v4l2
videodev 184320 3 uvcvideo,videobuf2_core,videobuf2_v4l2
media 40960 2 uvcvideo,videodev
snd_hda_codec_conexant 24576 1
snd_hda_codec_generic 73728 1 snd_hda_codec_conexant
snd_hda_codec_hdmi 49152 1
snd_hda_intel 40960 4
joydev 24576 0
input_leds 16384 0
mac80211 778240 0
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
serio_raw 16384 0
snd_hda_codec 126976 4 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_codec_generic
btusb 45056 0
snd_rawmidi 32768 1 snd_seq_midi
k10temp 16384 0
snd_hda_core 81920 5 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec,snd_hda_codec_hdmi,snd_hda_codec_generic
fam15h_power 16384 0
btrtl 16384 1 btusb
btbcm 16384 1 btusb
snd_hwdep 20480 1 snd_hda_codec
btintel 16384 1 btusb
bluetooth 548864 33 btrtl,btintel,bnep,btbcm,rfcomm,btusb
snd_pcm 98304 4 snd_hda_intel,snd_hda_codec,snd_hda_core,snd_hda_codec_hdmi
snd_seq 65536 2 snd_seq_midi_event,snd_seq_midi
ecdh_generic 24576 1 bluetooth
cfg80211 622592 1 mac80211
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 32768 2 snd_seq,snd_pcm
ccp 73728 0
shpchp 36864 0
snd 81920 19 snd_hda_intel,snd_hwdep,snd_hda_codec_conexant,snd_seq,snd_hda_codec,snd_timer,snd_rawmidi,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_seq_device,snd_pcm
ideapad_laptop 32768 0
soundcore 16384 1 snd
sparse_keymap 16384 1 ideapad_laptop
wmi 24576 1 ideapad_laptop
mac_hid 16384 0
sch_fq_codel 20480 2
iptable_filter 16384 0
ip6table_filter 16384 0
ip6_tables 28672 1 ip6table_filter
br_netfilter 24576 0
bridge 151552 1 br_netfilter
stp 16384 1 bridge
llc 16384 2 bridge,stp
arp_tables 24576 0
parport_pc 36864 0
ppdev 20480 0
lp 20480 0
parport 49152 3 lp,parport_pc,ppdev
ip_tables 28672 1 iptable_filter
x_tables 40960 5 arp_tables,ip_tables,iptable_filter,ip6table_filter,ip6_tables
autofs4 40960 2
amdgpu 2703360 0
chash 16384 1 amdgpu
rtsx_usb_sdmmc 28672 0
rtsx_usb 20480 2 rtsx_usb_sdmmc,rtsx_usb_ms
hid_generic 16384 0
usbhid 49152 0
hid 118784 2 hid_generic,usbhid
radeon 1470464 20
i2c_algo_bit 16384 2 amdgpu,radeon
psmouse 147456 0
ttm 106496 2 amdgpu,radeon
drm_kms_helper 172032 2 amdgpu,radeon
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
fb_sys_fops 16384 1 drm_kms_helper
i2c_piix4 24576 0
sdhci_pci 32768 0
sdhci 49152 1 sdhci_pci
drm 401408 10 amdgpu,radeon,ttm,drm_kms_helper
ahci 36864 3
r8169 86016 0
libahci 32768 1 ahci
mii 16384 1 r8169
video 45056 1 ideapad_laptop
>> iwconfig
>> ifconfig -a
enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.11 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::a2c4:266f:59a4:44f2 prefixlen 64 scopeid 0x20<link>
ether 28:d2:44:ea:b8:8a txqueuelen 1000 (Ethernet)
RX packets 8294 bytes 5198965 (5.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7554 bytes 956178 (956.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Boucle locale)
RX packets 2577 bytes 171052 (171.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2577 bytes 171052 (171.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>> sudo iwlist scan
>> uname -r -m
4.15.0-33-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
>> nmcli dev wifi
>> nmcli connection list (< 15.04) ou nmcli connection show (>= 15.04)
NAME UUID TYPE DEVICE
Connexion filaire 1 569227a8-d11d-39f4-8223-341562fd4e7a ethernet enp2s0
Academie de Montpellier 2a314bd3-b685-424d-92f7-7b387f011086 wifi --
ChezLesVialle 74d7a857-c202-484d-a80b-d1245cdbaa63 wifi --
Crespy 29bf842f-6c00-49bd-95da-3bf2cb44046f wifi --
FreeWifi 4822aa22-e7d0-420c-9536-8ec1918016c6 wifi --
IKD_Mairie_Vallabrix 7bb0e130-f2b6-4809-b727-d36a414c7fd0 wifi --
LORDI-REGION-LR ea7c71ad-379b-4ee5-9410-e999fd36cfb6 wifi --
Livebox-3B70 1636fc3c-6aa8-41e0-904f-12d3b10580c5 wifi --
Livebox-48FD 85f35738-e0ca-4c9d-b901-797ffafba40c wifi --
Livebox-8e28 1cce3ea5-521f-433a-8f1c-a6439f755c4c wifi --
Livebox-A34E 3924abe6-da1a-4517-bd5d-f566d6e7651b wifi --
Livebox-DAE0 93419404-4b1c-43be-aa93-2a7122a946da wifi --
Livebox-beda f231d1ad-65ea-4194-9560-1243b909934e wifi --
NordNet-5247 3a1762a4-9b85-484b-b308-6a7d6bc8d0e9 wifi --
Remsoph aeeb556d-9e89-4571-b86c-89ce71079e7e wifi --
SETUP 9bb01d1f-60c3-4974-b76a-364794c327bf wifi --
Temps calme 8f53e579-5fdb-4801-8736-9b9aa4e8eb63 wifi --
WIFI-CONDORCET 71f26adf-db1c-42fb-b391-8412081bf3a8 wifi --
WiFi Mediatheque 899eee55-7540-4264-b146-1381377bf735 wifi --
Wifi-Condorcet 39b8d57b-5435-4bac-b216-fcc081236531 wifi --
autoinstall 5cc88571-05c0-4dd0-b1de-88a833e563b5 wifi --
eduroam 910747a9-861c-46e0-aecb-bce69ebd7780 wifi --
lafreeboxdePL 188edccb-0ecb-43a9-879b-81d43c7f4707 wifi --
maison b3400cd5-2159-4976-a6b4-57c56864ec79 wifi --
orange d931e728-f0de-4721-ac21-4a62b4c7cc67 wifi --
tiphainewifi 1 1d30b4e5-a02b-45ba-96b8-4256c6063bc8 wifi --
>> nmcli connection status
>> 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
Merci d'avance pour votre secours,
Guy_