Wifi se connecte mais ne peut pas ping Ubuntu 14.04.2 avec Intel 7260
Après avoir déménagé dans un nouvel endroit, je n'ai pas réussi à faire fonctionner le wifi correctement. Mon ordinateur portable détecte le réseau et peut s'y connecter, mais aucune donnée ne peut la traverser. Cela fonctionne momentanément, mais seulement pour une seconde ou deux à la fois. Après la purge et la réinstallation de resolvconf, je disposais de 10 minutes de connexion, mais la connexion est à nouveau interrompue.
Pinging 8.8.8.8 résultats:
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
^C
--- 8.8.8.8 ping statistics ---
12 packets transmitted, 0 received, 100% packet loss, time 16100ms
Pinging 192.168.0.1 results:
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
From 192.168.0.102 icmp_seq=1 Destination Host Unreachable
From 192.168.0.102 icmp_seq=2 Destination Host Unreachable
From 192.168.0.102 icmp_seq=3 Destination Host Unreachable
^C
--- 192.168.0.1 ping statistics ---
5 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4023ms
pipe 3
Mon périphérique Android et les autres périphériques fonctionnent correctement avec le réseau et mon Ubuntu ne souffre pas de problèmes liés aux autres réseaux.
Ma situation est malheureusement celle où je ne peux pas modifier le réseau lui-même, mais comme d’autres appareils fonctionnent très bien, je soupçonne que le problème n’est pas là.
Je ne connais pas très bien le réseau Ubuntu, il est donc possible que quelque chose de simple me manque ici, même si j’ai essayé d’examiner la discussion et d’autres questions ici. Merci à tous pour l'aide.
Voici le rapport du script wifi:
########## wireless info START ##########
Report from: 04 Aug 2015 20:14 EEST +0300
Booted last: 04 Aug 2015 19:47 EEST +0300
Script from: 14 Jul 2015 17:04 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 3.16.0-45-generic #60~14.04.1-Ubuntu SMP Fri Jul 24 21:16:23 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 73)
Subsystem: Intel Corporation Wireless-N 7260 [8086:4262]
Kernel driver in use: iwlwifi
##### lsusb #############################
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 003: ID 8087:07dc Intel Corp.
Bus 002 Device 002: ID 0bda:572a Realtek Semiconductor Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
##### lsmod #############################
iwlmvm 217725 0
mac80211 652777 1 iwlmvm
iwlwifi 179412 1 iwlmvm
cfg80211 498458 3 iwlwifi,mac80211,iwlmvm
wmi 19193 0
ideapad_laptop 18278 0
sparse_keymap 13948 1 ideapad_laptop
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF]>
inet addr:192.168.43.63 Bcast:192.168.43.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'wlan0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1541 errors:0 dropped:0 overruns:0 frame:0
TX packets:2888 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:968332 (968.3 KB) TX bytes:426996 (426.9 KB)
##### iwconfig ##########################
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"AndroidAP"
Mode:Managed Frequency:2.437 GHz Access Point: <MAC 'AndroidAP' [AC1]>
Bit Rate=72.2 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=67/70 Signal level=-43 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:64 Missed beacon:0
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.43.1 0.0.0.0 UG 0 0 0 wlan0
192.168.43.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0
##### resolv.conf #######################
nameserver 127.0.1.1
##### network managers ##################
Installed:
NetworkManager
Running:
root 855 1 0 19:47 ? 00:00:01 NetworkManager
##### NetworkManager info ###############
** (process:3553): WARNING **: error: cannot retrieve connection: uid 1000 has no permission to perform this operation
NetworkManager Tool
State: connected (global)
- Device: wlan0 [AndroidAP] ---------------------------------------------------
Type: 802.11 WiFi
Driver: iwlwifi
State: connected
Default: yes
HW Address: <MAC 'wlan0' [IF]>
Capabilities:
Speed: 72 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
Blink1861D1: Infra, <MAC 'Blink1861D1' [AC2]>, Freq 2412 MHz, Rate 54 Mb/s, Strength 52 WEP
bob-net-no-3-03-227742-colocatio: Infra, <MAC 'bob-net-no-3-03-227742-colocatio' [AC3]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 74 WPA2
*AndroidAP: Infra, <MAC 'AndroidAP' [AC1]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 76 WPA2
IPv4 Settings:
Address: 192.168.43.63
Prefix: 24 (255.255.255.0)
Gateway: 192.168.43.1
DNS: 192.168.43.1
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/bob-net-no-3-03-227742-colocatio]] (600 root)
[connection] id=bob-net-no-3-03-227742-colocatio | type=802-11-wireless
[802-11-wireless] ssid=bob-net-no-3-03-227742-colocatio | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/vodafone3B54]] (600 root)
[connection] id=vodafone3B54 | type=802-11-wireless
[802-11-wireless] ssid=vodafone3B54 | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/bob-net-no-3-03-227742-colocatio 1]] (600 root)
[connection] id=bob-net-no-3-03-227742-colocatio 1 | type=802-11-wireless
[802-11-wireless] ssid=bob-net-no-3-03-227742-colocatio | mac-address=<MAC 'wlan0' [IF]>
[ipv6] method=auto
[ipv4] method=auto
##### iw reg get ########################
Region: Europe/Helsinki (based on set time zone)
country 00:
(2402 - 2472 @ 40), (3, 20)
(2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
(2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
(5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
(5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
##### iwlist channels ###################
lo no frequency information.
wlan0 13 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Channel 12 : 2.467 GHz
Channel 13 : 2.472 GHz
Current Frequency:2.437 GHz (Channel 6)
##### iwlist scan #######################
lo Interface doesn't support scanning.
Channel occupancy:
1 APs on Frequency:2.412 GHz (Channel 1)
2 APs on Frequency:2.437 GHz (Channel 6)
wlan0 Scan completed :
Cell 01 - Address: <MAC 'AndroidAP' [AC1]>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=66/70 Signal level=-44 dBm
Encryption key:on
ESSID:"AndroidAP"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000000043710d9
Extra: Last beacon: 32ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Cell 02 - Address: <MAC 'Blink1861D1' [AC2]>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=41/70 Signal level=-69 dBm
Encryption key:on
ESSID:"Blink1861D1"
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=0000000396e5c4d1
Extra: Last beacon: 32ms ago
Cell 03 - Address: <MAC 'bob-net-no-3-03-227742-colocatio' [AC3]>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=67/70 Signal level=-43 dBm
Encryption key:on
ESSID:"bob-net-no-3-03-227742-colocatio"
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=00000003971b1b6f
Extra: Last beacon: 32ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
##### module infos ######################
[iwlmvm]
filename: /lib/modules/3.16.0-45-generic/kernel/drivers/net/wireless/iwlwifi/mvm/iwlmvm.ko
license: GPL
author: Copyright(c) 2003- 2014 Intel Corporation <[email protected]>
version: in-tree:
description: The new Intel(R) wireless AGN driver for Linux
srcversion: C3CE81DD94553577D83E97E
depends: iwlwifi,mac80211,cfg80211
intree: Y
vermagic: 3.16.0-45-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C1:A3:1E:DB:9F:C4:C6:4E:2D:95:A7:FF:18:A6:73:D1:8C:AB:15:A6
sig_hashalgo: sha512
parm: init_dbg:set to true to debug an ASSERT in INIT fw (default: false (bool)
parm: power_scheme:power management scheme: 1-active, 2-balanced, 3-low power, default: 2 (int)
[mac80211]
filename: /lib/modules/3.16.0-45-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 315DCE1E2614AE1F38132D3
depends: cfg80211
intree: Y
vermagic: 3.16.0-45-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C1:A3:1E:DB:9F:C4:C6:4E:2D:95:A7:FF:18:A6:73:D1:8C:AB:15:A6
sig_hashalgo: sha512
parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
[iwlwifi]
filename: /lib/modules/3.16.0-45-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
license: GPL
author: Copyright(c) 2003- 2014 Intel Corporation <[email protected]>
version: in-tree:
description: Intel(R) Wireless WiFi driver for Linux
firmware: iwlwifi-100-5.ucode
firmware: iwlwifi-1000-5.ucode
firmware: iwlwifi-135-6.ucode
firmware: iwlwifi-105-6.ucode
firmware: iwlwifi-2030-6.ucode
firmware: iwlwifi-2000-6.ucode
firmware: iwlwifi-5150-2.ucode
firmware: iwlwifi-5000-5.ucode
firmware: iwlwifi-6000g2b-6.ucode
firmware: iwlwifi-6000g2a-5.ucode
firmware: iwlwifi-6050-5.ucode
firmware: iwlwifi-6000-4.ucode
firmware: iwlwifi-7265-9.ucode
firmware: iwlwifi-3160-9.ucode
firmware: iwlwifi-7260-9.ucode
firmware: iwlwifi-8000-8.ucode
srcversion: 93D664267873827B22C4309
depends: cfg80211
intree: Y
vermagic: 3.16.0-45-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C1:A3:1E:DB:9F:C4:C6:4E:2D:95:A7:FF:18:A6:73:D1:8C:AB:15:A6
sig_hashalgo: sha512
parm: swcrypto:using crypto in software (default 0 [hardware]) (int)
parm: 11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
parm: amsdu_size_8K:enable 8K amsdu size (default 0) (int)
parm: fw_restart:restart firmware in case of error (default true) (bool)
parm: antenna_coupling:specify antenna coupling in dB (defualt: 0 dB) (int)
parm: wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1) (int)
parm: nvm_file:NVM file name (charp)
parm: uapsd_disable:disable U-APSD functionality (default: Y) (bool)
parm: bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
parm: led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
parm: power_save:enable WiFi power management (default: disable) (bool)
parm: power_level:default power save level (range from 1 - 5, default: 1) (int)
parm: fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
[cfg80211]
filename: /lib/modules/3.16.0-45-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: D48679749A6B8B822E391CA
depends:
intree: Y
vermagic: 3.16.0-45-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C1:A3:1E:DB:9F:C4:C6:4E:2D:95:A7:FF:18:A6:73:D1:8C:AB:15:A6
sig_hashalgo: sha512
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[iwlmvm]
init_dbg: N
power_scheme: 2
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
probe_wait_ms: 500
[iwlwifi]
11n_disable: 0
amsdu_size_8K: 0
antenna_coupling: 0
bt_coex_active: Y
fw_monitor: N
fw_restart: Y
led_mode: 0
nvm_file: (null)
power_level: 0
power_save: N
swcrypto: 0
uapsd_disable: Y
wd_disable: 1
[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
lp
rtc
##### modprobe options ##################
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist AMD76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
[/etc/modprobe.d/modesetting.conf]
options cirrus modeset=1
options mgag200 modeset=1
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x8086:0x08b2 (iwlwifi)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
##### dmesg #############################
[ 732.387498] wlan0: deauthenticating from <MAC 'bob-net-no-3-03-227742-colocatio' [AC3]> by local choice (Reason: 3=DEAUTH_LEAVING)
[ 733.152653] wlan0: authenticate with <MAC 'bob-net-no-3-03-227742-colocatio' [AC3]>
[ 733.155625] wlan0: send auth to <MAC 'bob-net-no-3-03-227742-colocatio' [AC3]> (try 1/3)
[ 733.157833] wlan0: authenticated
[ 733.160589] wlan0: associate with <MAC 'bob-net-no-3-03-227742-colocatio' [AC3]> (try 1/3)
[ 733.167774] wlan0: RX AssocResp from <MAC 'bob-net-no-3-03-227742-colocatio' [AC3]> (capab=0x31 status=0 aid=2)
[ 733.170123] wlan0: associated
[ 1535.375017] wlan0: deauthenticating from <MAC 'bob-net-no-3-03-227742-colocatio' [AC3]> by local choice (Reason: 3=DEAUTH_LEAVING)
[ 1536.145109] wlan0: authenticate with <MAC 'AndroidAP' [AC1]>
[ 1536.147831] wlan0: send auth to <MAC 'AndroidAP' [AC1]> (try 1/3)
[ 1536.150625] wlan0: authenticated
[ 1536.154594] wlan0: associate with <MAC 'AndroidAP' [AC1]> (try 1/3)
[ 1536.168542] wlan0: RX AssocResp from <MAC 'AndroidAP' [AC1]> (capab=0x8431 status=0 aid=1)
[ 1536.168930] wlan0: associated
########## wireless info END ############
Vous devez désactiver certaines options du pilote.
Run in terminal
Sudo -H gedit /etc/modprobe.d/iwlwifi.conf
L'éditeur s'ouvrira. Collez-y ce texte
# /etc/modprobe.d/iwlwifi.conf
# iwlwifi will dyamically load either iwldvm or iwlmvm depending on the
# microcode file installed on the system. When removing iwlwifi, first
# remove the iwl?vm module and then iwlwifi.
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
options iwlwifi 11n_disable=1 bt_coex_active=0 power_save=0 swcrypto=1
sauvegardez le fichier et redémarrez.
J'ai désactivé toutes les options de la dernière ligne qui pourraient poser problème. Vous pouvez en supprimer certaines et tester si cela est nécessaire. Mais cela devrait fonctionner de cette façon.
Mise à jour: pour le noyau 4.2, ces options ne sont pas nécessaires. Intel 7260 fonctionne bien "out of the box".
Vous pouvez mettre à jour votre noyau vers la version 4.2 en lançant
Sudo apt-get install linux-generic-lts-wily
Pour certains codes de pays, les restrictions régionales peuvent également poser problème. Vous pouvez utiliser cette réponse si cela vous concerne.
J'ai aussi constaté que uapsd fonctionne très bien aussi. Il est désactivé par défaut, mais peut être activé avec
Sudo tee /etc/modprobe.d/iwlwifi-opt.conf <<< "uapsd_disable=N"
Mais il est possible que cela ne fonctionne pas bien avec tous les points d'accès. uapsd permet d'économiser de l'énergie dans certains cas.
J'avais pris certaines des mesures mentionnées précédemment. En lisant, j'ai remarqué la mention de la fréquence 5GHz. J'avais commuté mon point d'accès [Hotspot Android sur HTC One M8 sous CyanogenMod 6.0.0] sur la bande 5 GHz dans les paramètres de hotspot et le problème a disparu. WikiPedia montre clairement que la fréquence de 2,4 GHz ne devrait être utilisée qu’avec la certitude qu’un réseau WiFi n’interférera avec aucun autre système 802.11 ou non-802.11 (tel que Bluetooth) utilisant les mêmes fréquences.