Merci pour votre réponse rapide et de votre aide :
voici l'intégralité du fichier wificheck.log :
>> cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"
>> lsusb
Bus 002 Device 002: ID 05c8:0361 Cheng Uei Precision Industry Co., Ltd (Foxlink) SunplusIT INC. HP Truevision HD Webcam
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 062a:5918 Creative Labs
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 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. RTL8188EE Wireless Network Adapter [10ec:8179] (rev 01)
DeviceName: Realtek RTL8188EE 802.11bgn Wi-Fi Adapter
Subsystem: Hewlett-Packard Company RTL8188EE Wireless Network Adapter [103c:197d]
Kernel driver in use: rtl8188ee
Kernel modules: rtl8188ee
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader [10ec:5229] (rev 01)
--
05:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
DeviceName: Realtek PCIe FE Family Controller
Subsystem: Hewlett-Packard Company RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [103c:1982]
Kernel driver in use: r8169
Kernel modules: r8169
>> sudo lshw -C network
*-network
description: Interface réseau sans fil
produit: RTL8188EE Wireless Network Adapter
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:02:00.0
nom logique: wlo1
version: 01
numéro de série: bc:85:56:7a:fd:49
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8188ee driverversion=4.8.0-54-generic firmware=N/A ip=192.168.1.71 latency=0 link=yes multicast=yes wireless=IEEE 802.11
ressources: irq:32 portE/S:3000(taille=256) mémoire:f0200000-f0203fff
*-network
description: Ethernet interface
produit: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:05:00.0
nom logique: eno1
version: 07
numéro de série: a4:5d:36:7f:25:c0
taille: 10Mbit/s
capacité: 100Mbit/s
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
ressources: irq:29 portE/S:2000(taille=256) mémoire:f0004000-f0004fff mémoire:f0000000-f0003fff mémoire:f0010000-f001ffff
>> lsmod
Module Size Used by
nls_utf8 16384 0
udf 90112 0
crc_itu_t 16384 1 udf
ccm 20480 1
hp_wmi 16384 0
sparse_keymap 16384 1 hp_wmi
uvcvideo 90112 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
kvm 598016 0
arc4 16384 2
rtl8188ee 86016 0
videobuf2_v4l2 24576 1 uvcvideo
irqbypass 16384 1 kvm
videobuf2_core 40960 2 uvcvideo,videobuf2_v4l2
rtl_pci 28672 1 rtl8188ee
rtlwifi 77824 2 rtl_pci,rtl8188ee
snd_hda_codec_hdmi 45056 1
snd_hda_codec_realtek 86016 1
snd_hda_codec_generic 73728 1 snd_hda_codec_realtek
mac80211 761856 3 rtl_pci,rtl8188ee,rtlwifi
videodev 180224 3 uvcvideo,videobuf2_core,videobuf2_v4l2
media 40960 2 uvcvideo,videodev
cfg80211 581632 2 mac80211,rtlwifi
snd_hda_intel 36864 5
snd_hda_codec 135168 4 snd_hda_intel,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek
crct10dif_pclmul 16384 0
snd_hda_core 86016 5 snd_hda_intel,snd_hda_codec,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek
crc32_pclmul 16384 0
snd_hwdep 16384 1 snd_hda_codec
ghash_clmulni_intel 16384 0
snd_pcm 110592 4 snd_hda_intel,snd_hda_codec,snd_hda_core,snd_hda_codec_hdmi
aesni_intel 167936 2
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
aes_x86_64 20480 1 aesni_intel
rtsx_pci_ms 20480 0
lrw 16384 1 aesni_intel
glue_helper 16384 1 aesni_intel
snd_rawmidi 32768 1 snd_seq_midi
ablk_helper 16384 1 aesni_intel
snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi
memstick 20480 1 rtsx_pci_ms
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
cryptd 24576 3 ablk_helper,ghash_clmulni_intel,aesni_intel
snd_timer 32768 2 snd_seq,snd_pcm
snd 86016 21 snd_hda_intel,snd_hwdep,snd_seq,snd_hda_codec,snd_timer,snd_rawmidi,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_seq_device,snd_hda_codec_realtek,snd_pcm
k10temp 16384 0
soundcore 16384 1 snd
joydev 20480 0
input_leds 16384 0
serio_raw 16384 0
shpchp 36864 0
i2c_piix4 24576 0
hp_accel 28672 0
lis3lv02d 20480 1 hp_accel
input_polldev 16384 1 lis3lv02d
hp_wireless 16384 0
mac_hid 16384 0
parport_pc 32768 0
ppdev 20480 0
lp 20480 0
parport 49152 3 lp,parport_pc,ppdev
autofs4 40960 2
hid_generic 16384 0
usbhid 53248 0
hid 122880 2 hid_generic,usbhid
rtsx_pci_sdmmc 24576 0
amdkfd 139264 1
amd_iommu_v2 20480 1 amdkfd
radeon 1515520 3
psmouse 139264 0
i2c_algo_bit 16384 1 radeon
r8169 81920 0
ttm 102400 1 radeon
mii 16384 1 r8169
rtsx_pci 57344 2 rtsx_pci_sdmmc,rtsx_pci_ms
drm_kms_helper 167936 1 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
ahci 36864 2
drm 368640 6 radeon,ttm,drm_kms_helper
libahci 32768 1 ahci
wmi 16384 1 hp_wmi
fjes 28672 0
video 40960 0
>> iwconfig
wlo1 IEEE 802.11 ESSID:"SFR_9970"
Mode:Managed Frequency:2.412 GHz Access Point: 24:95:04:9A:99:74
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=54/70 Signal level=-56 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:1 Missed beacon:0
>> ifconfig -a
eno1 Link encap:Ethernet HWaddr a4:5d:36:7f:25:c0
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:5613 erreurs:0 :0 overruns:0 frame:0
TX packets:5613 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1
Octets reçus:538765 (538.7 KB) Octets transmis:538765 (538.7 KB)
wlo1 Link encap:Ethernet HWaddr bc:85:56:7a:fd:49
inet adr:192.168.1.71 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::2767:edf8:495:60df/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:194528 erreurs:0 :0 overruns:0 frame:0
TX packets:152042 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:241515386 (241.5 MB) Octets transmis:19623731 (19.6 MB)
>> sudo iwlist scan
wlo1 Scan completed :
Cell 01 - Address: BA:95:04:9A:99:75
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=54/70 Signal level=-56 dBm
Encryption key:off
ESSID:"SFR WiFi FON"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000007eb4cb77d8
Extra: Last beacon: 64ms ago
IE: Unknown: 000C534652205769466920464F4E
IE: Unknown: 010882848B962430486C
IE: Unknown: 030101
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: Unknown: 32040C121860
IE: Unknown: 2D1AEC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1601000000000000000000000000000000000000000000
IE: Unknown: DD090010180200F02C0000
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
Cell 02 - Address: BA:95:04:9A:99:77
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=54/70 Signal level=-56 dBm
Encryption key:on
ESSID:"SFR WiFi Mobile"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000007eb4cb884c
Extra: Last beacon: 64ms ago
IE: Unknown: 000F5346522057694669204D6F62696C65
IE: Unknown: 010882848B962430486C
IE: Unknown: 030101
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : 802.1x
IE: Unknown: 32040C121860
IE: Unknown: 2D1AEC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1601000000000000000000000000000000000000000000
IE: Unknown: DD090010180200F02C0000
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
Cell 03 - Address: 24:95:04:9A:99:74
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=46/70 Signal level=-64 dBm
Encryption key:on
ESSID:"SFR_9970"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000007eb4cb6ad8
Extra: Last beacon: 64ms ago
IE: Unknown: 00085346525F39393730
IE: Unknown: 010882848B962430486C
IE: Unknown: 030101
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: Unknown: 32040C121860
IE: Unknown: 2D1AEC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1601001700000000000000000000000000000000000000
IE: Unknown: DD870050F204104A0001101044000102103B00010310470010000000000000000000000000000000001021000B4E4236562D4658432D72301023000B4E4236562D4658432D72301024000B4E4236562D4658432D72301042000C3234393530343941393937301054000800060050F2040001101100085346525F39393730100800020084103C000101
IE: Unknown: DD090010180205F02C0000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
>> uname -r -m
4.8.0-54-generic x86_64
>> cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
>> sudo rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no