Frequent deauthentication from Wifi (Reason: 6) in a Centrino Advanced-N 6230 [Rainbow Peak]
For a few days now, my wifi is getting disrupted every few minutes. I use a 'vanilla' Ubuntu installation (i.e Unity, NetworkManager etc.). After an hour or so, the connection gets severed completely and NetworkManager can't find the network anymore. Toggling "Enable Wi-Fi" in the NetworkManager-menu allows me to find and connect to the network again.
This is an excerpt from /var/log/syslog:
May 14 16:50:51 terminus kernel: [ 4208.006043] wlan0: deauthenticated from 00:24:fe:a3:98:f6 (Reason: 6)
May 14 16:50:51 terminus wpa_supplicant[907]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:24:fe:a3:98:f6 reason=6
May 14 16:50:51 terminus NetworkManager[868]: <warn> Connection disconnected (reason 6)
May 14 16:50:51 terminus wpa_supplicant[907]: wlan0: SME: Trying to authenticate with 00:24:fe:a3:98:f6 (SSID='FRITZ!Box Fon WLAN 7270' freq=2447 MHz)
May 14 16:50:51 terminus kernel: [ 4208.034507] cfg80211: Calling CRDA to update world regulatory domain
May 14 16:50:51 terminus kernel: [ 4208.035050] wlan0: authenticate with 00:24:fe:a3:98:f6
May 14 16:50:51 terminus kernel: [ 4208.042178] wlan0: send auth to 00:24:fe:a3:98:f6 (try 1/3)
May 14 16:50:51 terminus NetworkManager[868]: <info> (wlan0): supplicant interface state: completed -> authenticating
May 14 16:50:51 terminus wpa_supplicant[907]: wlan0: Trying to associate with 00:24:fe:a3:98:f6 (SSID='FRITZ!Box Fon WLAN 7270' freq=2447 MHz)
May 14 16:50:51 terminus kernel: [ 4208.042526] cfg80211: World regulatory domain updated:
May 14 16:50:51 terminus kernel: [ 4208.042533] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
May 14 16:50:51 terminus kernel: [ 4208.042539] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 14 16:50:51 terminus kernel: [ 4208.042543] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 14 16:50:51 terminus kernel: [ 4208.042547] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
May 14 16:50:51 terminus kernel: [ 4208.042550] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 14 16:50:51 terminus kernel: [ 4208.042554] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 14 16:50:51 terminus kernel: [ 4208.044622] wlan0: authenticated
May 14 16:50:51 terminus kernel: [ 4208.046291] wlan0: associate with 00:24:fe:a3:98:f6 (try 1/3)
May 14 16:50:51 terminus NetworkManager[868]: <info> (wlan0): supplicant interface state: authenticating -> associating
May 14 16:50:51 terminus kernel: [ 4208.056055] wlan0: RX AssocResp from 00:24:fe:a3:98:f6 (capab=0x431 status=0 aid=1)
May 14 16:50:51 terminus wpa_supplicant[907]: wlan0: Associated with 00:24:fe:a3:98:f6
May 14 16:50:51 terminus kernel: [ 4208.065893] wlan0: associated
May 14 16:50:51 terminus NetworkManager[868]: <info> (wlan0): supplicant interface state: associating -> 4-way handshake
May 14 16:50:51 terminus wpa_supplicant[907]: wlan0: WPA: Key negotiation completed with 00:24:fe:a3:98:f6 [PTK=CCMP GTK=TKIP]
May 14 16:50:51 terminus wpa_supplicant[907]: wlan0: CTRL-EVENT-CONNECTED - Connection to 00:24:fe:a3:98:f6 completed [id=0 id_str=]
May 14 16:50:51 terminus NetworkManager[868]: <info> (wlan0): supplicant interface state: 4-way handshake -> completed
May 14 16:51:55 terminus wpa_supplicant[907]: wlan0: CTRL-EVENT-SCAN-STARTED
May 14 16:52:27 terminus kernel: [ 4304.188238] wlan0: deauthenticated from 00:24:fe:a3:98:f6 (Reason: 6)
May 14 16:52:27 terminus wpa_supplicant[907]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:24:fe:a3:98:f6 reason=6
May 14 16:52:27 terminus NetworkManager[868]: <warn> Connection disconnected (reason 6)
May 14 16:52:27 terminus wpa_supplicant[907]: wlan0: SME: Trying to authenticate with 00:24:fe:a3:98:f6 (SSID='FRITZ!Box Fon WLAN 7270' freq=2447 MHz)
May 14 16:52:27 terminus kernel: [ 4304.215024] cfg80211: Calling CRDA to update world regulatory domain
May 14 16:52:27 terminus kernel: [ 4304.215540] wlan0: authenticate with 00:24:fe:a3:98:f6
May 14 16:52:27 terminus NetworkManager[868]: <info> (wlan0): supplicant interface state: completed -> authenticating
May 14 16:52:27 terminus wpa_supplicant[907]: wlan0: Trying to associate with 00:24:fe:a3:98:f6 (SSID='FRITZ!Box Fon WLAN 7270' freq=2447 MHz)
May 14 16:52:27 terminus kernel: [ 4304.219680] wlan0: send auth to 00:24:fe:a3:98:f6 (try 1/3)
May 14 16:52:27 terminus kernel: [ 4304.222003] wlan0: authenticated
May 14 16:52:27 terminus kernel: [ 4304.222790] wlan0: associate with 00:24:fe:a3:98:f6 (try 1/3)
May 14 16:52:27 terminus kernel: [ 4304.223063] cfg80211: World regulatory domain updated:
May 14 16:52:27 terminus kernel: [ 4304.223072] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
May 14 16:52:27 terminus kernel: [ 4304.223078] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 14 16:52:27 terminus kernel: [ 4304.223083] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 14 16:52:27 terminus kernel: [ 4304.223087] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
May 14 16:52:27 terminus kernel: [ 4304.223090] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 14 16:52:27 terminus kernel: [ 4304.223094] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 14 16:52:27 terminus kernel: [ 4304.226833] wlan0: RX AssocResp from 00:24:fe:a3:98:f6 (capab=0x431 status=0 aid=1)
May 14 16:52:27 terminus NetworkManager[868]: <info> (wlan0): supplicant interface state: authenticating -> associating
May 14 16:52:27 terminus wpa_supplicant[907]: wlan0: Associated with 00:24:fe:a3:98:f6
May 14 16:52:27 terminus kernel: [ 4304.232953] wlan0: associated
May 14 16:52:27 terminus NetworkManager[868]: <info> (wlan0): supplicant interface state: associating -> 4-way handshake
May 14 16:52:27 terminus wpa_supplicant[907]: wlan0: WPA: Key negotiation completed with 00:24:fe:a3:98:f6 [PTK=CCMP GTK=TKIP]
May 14 16:52:27 terminus wpa_supplicant[907]: wlan0: CTRL-EVENT-CONNECTED - Connection to 00:24:fe:a3:98:f6 completed [id=0 id_str=]
May 14 16:52:27 terminus NetworkManager[868]: <info> (wlan0): supplicant interface state: 4-way handshake -> completed
May 14 16:53:55 terminus wpa_supplicant[907]: wlan0: CTRL-EVENT-SCAN-STARTED
May 14 16:54:00 terminus wpa_supplicant[907]: nl80211: send_and_recv->nl_recvmsgs failed: -33
May 14 16:54:05 terminus wpa_supplicant[907]: wlan0: WPA: Group rekeying completed with 00:24:fe:a3:98:f6 [GTK=TKIP]
Other relevant information:
root@terminus:~# lshw -c network
*-network
description: Wireless interface
product: Centrino Advanced-N 6230 [Rainbow Peak]
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 34
serial: 88:53:2e:42:0b:71
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-24-generic firmware=18.168.6.1 ip=192.168.3.22 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:52 memory:f1b00000-f1b01fff
root@terminus:~# lsmod
Module Size Used by
btrfs 835954 0
raid6_pq 97812 1 btrfs
xor 21411 1 btrfs
ufs 74890 0
qnx4 13317 0
hfsplus 107516 0
hfs 54677 0
minix 36140 0
ntfs 97369 0
msdos 17332 0
jfs 181348 0
xfs 912173 0
libcrc32c 12644 2 xfs,btrfs
ctr 13049 1
ccm 17773 1
nls_iso8859_1 12713 0
snd_hda_codec_hdmi 46207 1
snd_hda_codec_realtek 61438 1
joydev 17381 0
intel_rapl 18773 0
x86_pkg_temp_thermal 14205 0
intel_powerclamp 14705 0
coretemp 13435 0
kvm_intel 143060 0
kvm 451511 1 kvm_intel
dell_laptop 18168 0
dcdbas 14928 1 dell_laptop
crct10dif_pclmul 14289 0
crc32_pclmul 13113 0
ghash_clmulni_intel 13259 0
aesni_intel 55624 2
uvcvideo 80885 0
aes_x86_64 17131 1 aesni_intel
lrw 13286 1 aesni_intel
gf128mul 14951 1 lrw
videobuf2_vmalloc 13216 1 uvcvideo
glue_helper 13990 1 aesni_intel
ablk_helper 13597 1 aesni_intel
videobuf2_memops 13362 1 videobuf2_vmalloc
cryptd 20359 3 ghash_clmulni_intel,aesni_intel,ablk_helper
psmouse 102222 0
videobuf2_core 40664 1 uvcvideo
serio_raw 13462 0
videodev 134688 2 uvcvideo,videobuf2_core
rfcomm 69160 8
arc4 12608 2
bnep 19624 2
snd_hda_intel 52355 3
iwldvm 232285 0
snd_hda_codec 192906 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
mac80211 626489 1 iwldvm
nouveau 1097199 1
snd_hwdep 13602 1 snd_hda_codec
snd_pcm 102099 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
btusb 32412 0
snd_page_alloc 18710 2 snd_pcm,snd_hda_intel
snd_seq_midi 13324 0
snd_seq_midi_event 14899 1 snd_seq_midi
bluetooth 395423 22 bnep,btusb,rfcomm
iwlwifi 169932 1 iwldvm
snd_rawmidi 30144 1 snd_seq_midi
i915 783485 3
dell_wmi 12761 0
lpc_ich 21080 0
sparse_keymap 13948 1 dell_wmi
snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi
snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi
mxm_wmi 13021 1 nouveau
snd_timer 29482 2 snd_pcm,snd_seq
cfg80211 484040 3 iwlwifi,mac80211,iwldvm
ttm 85115 1 nouveau
snd 69238 17 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
drm_kms_helper 52758 2 i915,nouveau
wmi 19177 3 dell_wmi,mxm_wmi,nouveau
drm 302817 7 ttm,i915,drm_kms_helper,nouveau
i2c_algo_bit 13413 2 i915,nouveau
soundcore 12680 1 snd
mei_me 18627 0
mei 82274 1 mei_me
mac_hid 13205 0
video 19476 2 i915,nouveau
parport_pc 32701 0
ppdev 17671 0
lp 17759 0
parport 42348 3 lp,ppdev,parport_pc
hid_generic 12548 0
usbhid 52616 0
hid 106148 2 hid_generic,usbhid
usb_storage 62209 0
ahci 25819 1
r8169 67581 0
libahci 32168 1 ahci
mii 13934 1 r8169
I guess it could be a hardware-related issue, but as far as I know, the problem does not occur on Windows (8, 64bit). However, since the reconnect is so fast, I might have missed it so far.
Any idea what the issue could be? What is "Reason 6" and what can cause it? How can I debug the problem further?
It seems like Network Issues since Trusty could be the same issue. I would appreciate if someone could post my link there, since I don't have enough reputation to do so.
I disabled mode-N wireless by adding 'options iwlwifi 11n_disable=1' to some file in /etc/modprobe.d/. I had no disconnects since then!
Solution 1:
I have had similar issues, and found the following helped (not solved) my problem:
Check which regulatory agency your wireless is set to use:
iw reg get
Mine defaulted to '00', which is unset. As I'm in the US, I then ran
sudo iw reg set US
This setting for my wireless seems to have made the behaviour of my device much more consistent, although I am also running
in the file /etc/modprobe.d/iwlwifi.conf to disable the 802.11n protocol
options iwlwifi 11n_disable=1
and in the file /etc/sysctl.conf I am disabling the ipv6 protocols
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
and finally, my wireless router has been set not to use QOS/WWN
Solution 2:
For me it helped to change auto channel to fix channel on my wlan router.
I also got error messages like wlan0: deauthenticated from aa:bb:cc:dd:ee:ff all the time and I found out (with command wpa_cli) that this happens after the wlan router changes its channel. Therefore I use a fixed wlan channel now which solves this issue.
You can see the currently used channel using wpa_cli. It shows you when the channel is being changed. When the wlan channel is changing you can see that the frequency is different from before.
It's not about to find any free wlan channels but when the channel is being changed, it seems that there is an issue with wpa_supplicant and it doesn't work any more but instead it is trying to reconnect all the time without success. After that time you get a lot of wlan0: deauthenticated from aa:bb:cc:dd:ee:ff messages (mac address will be different). Therefore the solution is to use fix the wlan channel to whatever channel you like.