Explication sur la resolution dans le post n°
16 de ce sujet
Bonjour,
Depuis ce weekend, je n'arrive plus a capter mon wifi WPA2 avec mon pc portable (avec mon telephone, ma tablette et autre materiel de la maison, ca fonctionne)
La seule explication que je peux donner c'est qu'avant que je constate le probleme, mon pc m'a averti que le wattage de ma batterie n'etait pas suffisant : en effet, mon niveau de batterie etait faible et j'ai branché mon chargeur sur une prise qui ne fonctionne pas tres bien. Quand j'ai vu que le message apres plusieurs redemarrage, j'ai changé mon chargeur de prise et le message a disparu mais mon wifi aussi par la meme occasion ...
J'ai fait tourné le script wificheck, peut etre que vous pourrez m'en dire plus.
Merci d'avance
>> cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.4 LTS"
>> lsusb
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 003: ID 0c45:648b Microdia Integrated Webcam
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
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
02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43228 802.11a/b/g/n [14e4:4359]
Subsystem: Dell BCM43228 802.11a/b/g/n [1028:0014]
Kernel driver in use: wl
Kernel modules: bcma, wl
--
0c:00.0 Ethernet controller [0200]: Broadcom Inc. and subsidiaries NetXtreme BCM5761 Gigabit Ethernet PCIe [14e4:1681] (rev 10)
Subsystem: Dell NetXtreme BCM5761 Gigabit Ethernet PCIe [1028:053d]
Kernel driver in use: tg3
Kernel modules: tg3
>> sudo lshw -C network
*-network
description: Interface réseau sans fil
produit: BCM43228 802.11a/b/g/n
fabriquant: Broadcom Inc. and subsidiaries
identifiant matériel: 0
information bus: pci@0000:02:00.0
nom logique: wlp2s0
version: 00
numéro de série: 1c:3e:84:32:7f:7e
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11
ressources: irq:17 mémoire:f7e00000-f7e03fff
*-network
description: Ethernet interface
produit: NetXtreme BCM5761 Gigabit Ethernet PCIe
fabriquant: Broadcom Inc. and subsidiaries
identifiant matériel: 0
information bus: pci@0000:0c:00.0
nom logique: enp12s0
version: 10
numéro de série: 74:86:7a:70:27:cb
taille: 1Gbit/s
capacité: 1Gbit/s
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=5761-v3.80 ip=192.168.1.20 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
ressources: irq:31 mémoire:f7c10000-f7c1ffff mémoire:f7c00000-f7c0ffff
>> lsmod | sort
aesni_intel 188416 0
aes_x86_64 20480 1 aesni_intel
ahci 40960 2
auth_rpcgss 61440 1 nfsd
autofs4 40960 2
binfmt_misc 20480 1
cfg80211 622592 1 wl
coretemp 16384 0
crc32_pclmul 16384 0
crct10dif_pclmul 16384 0
cryptd 24576 3 crypto_simd,ghash_clmulni_intel,aesni_intel
crypto_simd 16384 1 aesni_intel
dcdbas 16384 1 dell_smbios
dell_laptop 20480 0
dell_rbtn 16384 1
dell_smbios 24576 2 dell_wmi,dell_laptop
dell_smm_hwmon 16384 0
dell_smo8800 16384 0
dell_wmi 16384 0
dell_wmi_descriptor 16384 2 dell_wmi,dell_smbios
drm 401408 6 drm_kms_helper,i915
drm_kms_helper 172032 1 i915
fb_sys_fops 16384 1 drm_kms_helper
ghash_clmulni_intel 16384 0
glue_helper 16384 1 aesni_intel
grace 16384 2 nfsd,lockd
i2c_algo_bit 16384 1 i915
i915 1622016 6
input_leds 16384 0
intel_cstate 20480 0
intel_powerclamp 16384 0
intel_rapl 20480 0
intel_rapl_perf 16384 0
ip_tables 28672 0
irqbypass 16384 1 kvm
joydev 24576 0
kvm 610304 1 kvm_intel
kvm_intel 217088 0
libahci 32768 1 ahci
lockd 94208 1 nfsd
lp 20480 0
lpc_ich 24576 0
mac_hid 16384 0
media 40960 2 videodev,uvcvideo
mei 94208 1 mei_me
mei_me 40960 0
Module Size Used by
nfs_acl 16384 1 nfsd
nfsd 339968 13
parport 49152 3 parport_pc,lp,ppdev
parport_pc 32768 0
pcbc 16384 0
ppdev 20480 0
pps_core 20480 1 ptp
psmouse 151552 0
ptp 20480 1 tg3
sch_fq_codel 20480 3
sdhci 49152 1 sdhci_pci
sdhci_pci 32768 0
serio_raw 16384 0
shpchp 36864 0
snd 81920 17 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_timer,snd_pcm,snd_hda_codec_idt,snd_rawmidi
snd_hda_codec 126976 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_idt
snd_hda_codec_generic 73728 1 snd_hda_codec_idt
snd_hda_codec_hdmi 49152 1
snd_hda_codec_idt 57344 1
snd_hda_core 81920 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_idt
snd_hda_intel 45056 3
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 98304 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
snd_rawmidi 32768 1 snd_seq_midi
snd_seq 65536 2 snd_seq_midi,snd_seq_midi_event
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_timer 32768 2 snd_seq,snd_pcm
soundcore 16384 1 snd
sparse_keymap 16384 1 dell_wmi
sunrpc 331776 18 nfsd,auth_rpcgss,lockd,nfs_acl
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
tg3 167936 0
uvcvideo 86016 0
vboxdrv 475136 2 vboxnetadp,vboxnetflt
vboxnetadp 28672 0
vboxnetflt 28672 0
video 45056 3 dell_wmi,dell_laptop,i915
videobuf2_core 40960 2 videobuf2_v4l2,uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_vmalloc 16384 1 uvcvideo
videodev 184320 3 videobuf2_core,videobuf2_v4l2,uvcvideo
wl 6447104 0
wmi 24576 4 dell_wmi,wmi_bmof,dell_smbios,dell_wmi_descriptor
wmi_bmof 16384 0
x86_pkg_temp_thermal 16384 0
x_tables 40960 1 ip_tables
>> iwconfig
wlp2s0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
>> ifconfig -a
enp12s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.20 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 2a01:e34:ef2d:610:7c1c:3556:406e:ac6a prefixlen 64 scopeid 0x0<global>
inet6 2a01:e34:ef2d:610:f4ed:37fd:b6ae:d2d2 prefixlen 64 scopeid 0x0<global>
inet6 fe80::777:f7a7:c0dc:a33b prefixlen 64 scopeid 0x20<link>
ether 74:86:7a:70:27:cb txqueuelen 1000 (Ethernet)
RX packets 3598 bytes 3945799 (3.9 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2248 bytes 314400 (314.4 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 18
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 445 bytes 35084 (35.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 445 bytes 35084 (35.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp2s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 1c:3e:84:32:7f:7e txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 17
>> sudo iwlist scan
wlp2s0 No scan results
>> uname -r -m
4.15.0-91-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
IN-USE SSID MODE CHAN RATE SIGNAL BARS SECURITY
>> nmcli connection list (< 15.04) ou nmcli connection show (>= 15.04)
NAME UUID TYPE DEVICE
Connexion filaire 1 afcdcf46-f8e6-36e4-b3a5-bb74f5fd9916 ethernet enp12s0
FinkNode cc90bf90-4b8d-42ea-bbc9-1ab4693d4f48 wifi --
MyNode 4d5f1359-999e-49a7-a8e4-ab9b667591bd wifi --
>> nmcli connection status
>> sudo rfkill list
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
3: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no