Bonjour,
le wifi sur mon PC est depuis longtemps lent, surtout comparé à un autre PC ou au smartphone posé à côté (le test nperf donne entre 10 et 20 Mb/s alors que les autres appareils sont entre 40 et 60). De plus depuis quelques jours il ne capte plus dès que je m'éloigne...
Voila mon wificheck
>> 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 04f2:b45e Chicony Electronics Co., Ltd
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 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 002: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> lspci -k -nn | grep -A 3 -i net
03:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
Subsystem: Hewlett-Packard Company AR9485/HB125 802.11bgn 1×1 Wi-Fi Adapter [103c:1838]
Kernel driver in use: ath9k
Kernel modules: ath9k
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:8136] (rev 07)
Subsystem: Hewlett-Packard Company RTL810xE PCI Express Fast Ethernet controller [103c:21f7]
Kernel driver in use: r8169
Kernel modules: r8169
>> sudo lshw -C network
*-network
description: Interface réseau sans fil
produit: AR9485 Wireless Network Adapter
fabriquant: Qualcomm Atheros
identifiant matériel: 0
information bus: pci@0000:03:00.0
nom logique: wlo1
version: 01
numéro de série: ac:b5:7d:80:e8:00
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=4.15.0-99-generic firmware=N/A ip=192.168.1.12 latency=0 link=yes multicast=yes wireless=IEEE 802.11
ressources: irq:36 mémoire:f0a00000-f0a7ffff mémoire:f0a80000-f0a8ffff
*-network
description: Ethernet interface
produit: RTL810xE PCI Express Fast Ethernet controller
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:04:00.0
nom logique: enp4s0
version: 07
numéro de série: d0:bf:9c:15:92:2d
taille: 10Mbit/s
capacité: 100Mbit/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 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:33 portE/S:2000(taille=256) mémoire:f0900000-f0900fff mémoire:f0800000-f0803fff
>> lsmod | sort
aesni_intel 188416 6
aes_x86_64 20480 1 aesni_intel
ahci 40960 4
amd_freq_sensitivity 16384 0
amdgpu 2715648 0
amd_iommu_v2 20480 1 amdkfd
amdkfd 180224 1
arc4 16384 2
ath 28672 3 ath9k_common,ath9k,ath9k_hw
ath9k 151552 0
ath9k_common 36864 1 ath9k
ath9k_hw 471040 2 ath9k_common,ath9k
autofs4 40960 2
ccm 20480 9
cfg80211 634880 4 ath9k_common,ath9k,ath,mac80211
chash 16384 1 amdgpu
crc32_pclmul 16384 0
crct10dif_pclmul 16384 0
cryptd 24576 3 crypto_simd,ghash_clmulni_intel,aesni_intel
crypto_simd 16384 1 aesni_intel
drm 401408 3 drm_kms_helper,amdgpu,ttm
drm_kms_helper 172032 1 amdgpu
edac_mce_amd 28672 0
fam15h_power 16384 0
fb_sys_fops 16384 1 drm_kms_helper
ghash_clmulni_intel 16384 0
glue_helper 16384 1 aesni_intel
hid 118784 2 usbhid,hid_generic
hid_generic 16384 0
hp_wireless 16384 0
hp_wmi 16384 0
i2c_algo_bit 16384 1 amdgpu
i2c_piix4 24576 0
input_leds 16384 0
ip_tables 28672 0
irqbypass 16384 1 kvm
joydev 24576 0
k10temp 16384 0
kvm 610304 0
libahci 32768 1 ahci
lp 20480 0
mac80211 786432 1 ath9k
mac_hid 16384 0
media 40960 2 videodev,uvcvideo
memstick 16384 1 rtsx_pci_ms
mii 16384 1 r8169
Module Size Used by
nls_iso8859_1 16384 1
parport 49152 3 parport_pc,lp,ppdev
parport_pc 32768 0
pcbc 16384 0
ppdev 20480 0
psmouse 151552 0
r8169 86016 0
rtsx_pci 65536 2 rtsx_pci_sdmmc,rtsx_pci_ms
rtsx_pci_ms 20480 0
rtsx_pci_sdmmc 24576 0
sch_fq_codel 20480 2
sdhci 49152 1 sdhci_pci
sdhci_pci 32768 0
serio_raw 16384 0
shpchp 36864 0
snd 81920 27 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
snd_hda_codec 126976 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
snd_hda_codec_generic 73728 1 snd_hda_codec_realtek
snd_hda_codec_hdmi 49152 1
snd_hda_codec_realtek 106496 1
snd_hda_core 81920 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hda_intel 45056 8
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 hp_wmi
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
ttm 106496 1 amdgpu
usbhid 49152 0
uvcvideo 86016 0
video 45056 0
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
wmi 24576 2 hp_wmi,wmi_bmof
wmi_bmof 16384 0
x_tables 40960 1 ip_tables
>> iwconfig
wlo1 IEEE 802.11 ESSID:"Livebox-BC30"
Mode:Managed Frequency:2.412 GHz Access Point: B8:26:6C:4F:BC:30
Bit Rate=11 Mb/s Tx-Power=15 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=25/70 Signal level=-85 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:4 Invalid misc:127 Missed beacon:0
>> ifconfig -a
enp4s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether d0:bf:9c:15:92:2d 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
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 1027 bytes 81465 (81.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1027 bytes 81465 (81.4 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.12 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 2a01:cb18:5ca:cc00:90fc:a399:5574:7b52 prefixlen 64 scopeid 0x0<global>
inet6 2a01:cb18:5ca:cc00:7036:f753:852:5fc4 prefixlen 64 scopeid 0x0<global>
inet6 fe80::d390:973d:6d9c:2486 prefixlen 64 scopeid 0x20<link>
ether ac:b5:7d:80:e8:00 txqueuelen 1000 (Ethernet)
RX packets 1432 bytes 294826 (294.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 842 bytes 110761 (110.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>> sudo iwlist scan
wlo1 Scan completed :
Cell 01 - Address: B8:26:6C:4F:BC:30
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=27/70 Signal level=-83 dBm
Encryption key:on
ESSID:"Livebox-BC30"
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=000000af9bb600c5
Extra: Last beacon: 36ms ago
IE: Unknown: 000C4C697665626F782D42433330
IE: Unknown: 010882848B960C121824
IE: Unknown: 030101
IE: Unknown: 0706465220010D14
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: 2D1AAD011BFFFF0000000000000000000000000000000406E4A70C00
IE: Unknown: 331AAD011BFFFF0000000000000000000000000000000406E4A70C00
IE: Unknown: 3D1601080400000000000000000000000000000000000000
IE: Unknown: 341601080400000000000000000000000000000000000000
IE: Unknown: DD180050F20201018B0003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD8F0050F204104A0001101044000102103B000103104700104A403A3E3E4BFC4EFA4B3B384A403A3E10210008536167656D636F6D10230016536167656D636F6D46617374333936355F4C42322E381024000C53475F4C42335F312E322E3110420009414E313530343746461054000800060050F204000110110000100800020006103C0001011049000600372A000120
Cell 02 - Address: 9A:26:6C:4F:BC:30
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=25/70 Signal level=-85 dBm
Encryption key:off
ESSID:"orange"
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=000000af9bda7180
Extra: Last beacon: 208ms ago
IE: Unknown: 00066F72616E6765
IE: Unknown: 010882848B960C121824
IE: Unknown: 030101
IE: Unknown: 050402030000
IE: Unknown: 0706465220010D14
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: 2D1AAD011BFFFF0000000000000000000000000000000406E4A70C00
IE: Unknown: 3D1601080400000000000000000000000000000000000000
IE: Unknown: DD180050F20201018B0003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
>> uname -r -m
4.15.0-99-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
orange Infra 1 130 Mbit/s 25 ▂___ --
* Livebox-BC30 Infra 1 130 Mbit/s 22 ▂___ WPA2
>> nmcli connection list (< 15.04) ou nmcli connection show (>= 15.04)
NAME UUID TYPE DEVICE
Livebox-BC30 adb4189f-fd64-489f-8887-f963e0be3e03 wifi wlo1
Connexion filaire 1 cb5bdc52-c58d-3e3a-adcb-0ed95591cf23 ethernet --
LE BOIS DE FARAL 87ed30bb-eb60-49f5-a2b4-874fc24aa3e1 wifi --
Livebox-301E c8c85fba-d11f-4e51-a04e-35d9ed805722 wifi --
Livebox-3C10 77cdcb51-9028-4bd4-9919-c088c0a9c8f1 wifi --
Livebox-7504 e8fb1781-b877-46fd-b376-6ff17d307f3a wifi --
Livebox-FFC3 3b1bce75-5ebf-4bff-b3f7-f51a6ef2eb95 wifi --
Ranson e4eaff18-81f0-4f67-9339-f6bc9a40c101 wifi --
>> nmcli connection status
>> sudo rfkill list
1: phy1: Wireless LAN
Soft blocked: no
Hard blocked: no
Merci d'avance pour vos conseils