Wi-Fi disconnects unexpectedly - Ubuntu 14.04 - Intel Centrino Wireless N-1030

**ytreza2** · April 27th, 2014

Hello people !
I just installed Ubuntu 14.04, and and I'm having issues with Wi-Fi. It usually works a few minutes, then disconnects unexpectedly and it is impossible to use it again. I have to restart my computer to make it work again. My computer is a Dell XPS 17 with an Intel Centrino Wireless N-1030 [Rainbow Peak] card. Ubuntu 12.04 worked perfectly on this computer.

I have already open a thread on forum.ubuntu-fr.org.
I tried to:
- change my AP from "mixed" mode to "WPA2".
- temporarily disable Wi-Fi n on my card by using :

Code:

sudo modprobe iwlwifi -r
sudo modprobe iwlwifi 11n_disable=0

- install and configure ndiswrapper, unsuccessfully.

Unfortunately my problem remains unsolved. Can you help me please?
Thanks

PS : Sorry for my poor English.

Here is the file generated by the script posted by Bapoumba in the sticky thread :

Code:

########## wireless info START ##########

##### release #####

Distributor ID:    Ubuntu
Description:    Ubuntu 14.04 LTS
Release:    14.04
Codename:    trusty

##### kernel #####

Linux XPS17 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

##### lspci #####

03:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 1030 [Rainbow Peak] [8086:008a] (rev 34)
    Subsystem: Intel Corporation Centrino Wireless-N 1030 BGN [8086:5325]
    Kernel driver in use: iwlwifi

0a:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06)
    Subsystem: Dell Device [1028:04b8]
    Kernel driver in use: r8169

##### lsusb #####

Bus 002 Device 008: ID 8086:0189 Intel Corp. 
Bus 002 Device 003: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
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 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
Bus 001 Device 003: ID 0408:2fb1 Quanta Computer, Inc. 
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

##### PCMCIA Card Info #####

##### rfkill #####

1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
3: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

##### iw reg get #####

country FR:
    (2402 - 2482 @ 40), (N/A, 20)
    (5170 - 5250 @ 40), (N/A, 20)
    (5250 - 5330 @ 40), (N/A, 20), DFS
    (5490 - 5710 @ 40), (N/A, 27), DFS
    (57240 - 65880 @ 2160), (N/A, 40), NO-OUTDOOR

##### interfaces #####

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

##### iwconfig #####

wlan0     IEEE 802.11bgn  ESSID:"xxxx"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: <MAC address removed>   
          Bit Rate=65 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=53/70  Signal level=-57 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:48   Missed beacon:0

##### route #####

Table de routage IP du noyau
Destination     Passerelle      Genmask         Indic Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 wlan0
192.168.1.0     0.0.0.0         255.255.255.0   U     9      0        0 wlan0

##### resolv.conf #####

nameserver 127.0.1.1
search home

##### nm-tool #####

NetworkManager Tool

State: connected (global)

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        <MAC address removed>

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

- Device: wlan0  [xxxx] ------------------------------------------------
  Type:              802.11 WiFi
  Driver:            iwlwifi
  State:             connected
  Default:           yes
  HW Address:        <MAC address removed>

  Capabilities:
    Speed:           65 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    xxxx:       Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 19 WPA
    *xxxx:   Infra, <MAC address removed>, Freq 2412 MHz, Rate 54 Mb/s, Strength 62 WPA2

  IPv4 Settings:
    Address:         192.168.1.13
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.1.1

    DNS:             192.168.1.1

##### NetworkManager.state #####

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true

##### NetworkManager.conf #####

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

##### iwlist #####

wlan0     Scan completed :
          Cell 01 - Address: <MAC address removed>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=55/70  Signal level=-55 dBm  
                    Encryption key:on
                    ESSID:"xxxx"
                    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=00000008edad7e45
                    Extra: Last beacon: 0ms ago
                    IE: Unknown: 000C4C697665626F782D44453830
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030101
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: DD180050F2020101870003A4000027A4000042435E0062322F00
                    IE: Unknown: 2D1A4C101BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1601080800000000000000000000000000000000000000
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD0A00037F04010000000000
                    IE: Unknown: 0706465220010D14
                    IE: Unknown: DD920050F204104A0001101044000102103B00010310470010000000000000100000004C09B40CDE80102100035A54451023000F4C697665626F7820465454482076321024001A6164363833365F4144534C5F5048595F30783030303030303030104200074C4D5A313230361054000800060050F20400011011000D465446525341332E3639313632100800020086103C000101
          Cell 02 - Address: <MAC address removed>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=26/70  Signal level=-84 dBm  
                    Encryption key:on
                    ESSID:"xxxx"
                    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=00000103d2bb98f0
                    Extra: Last beacon: 0ms ago
                    IE: Unknown: 00094E4555465F45383134
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: Unknown: 32040C121860
                    IE: Unknown: DD840050F204104A00011010440001021041000100103B00010310470010D96C7EFC2F8938F1EFBD6E5148BFA812102100044E4555461023000A4E42342D4658432D72311024000A4E42342D4658432D72311042000C3030313733333541453831341054000800060050F2040001101100094E4555465F45383134100800020084103C000101
                    IE: Unknown: DD090010180202F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00

##### iwlist channel #####

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:2.412 GHz (Channel 1)

##### lsmod #####

iwldvm                232285  0 
mac80211              626489  1 iwldvm
iwlwifi               169932  1 iwldvm
cfg80211              484040  3 iwlwifi,mac80211,iwldvm

##### modinfo #####

filename:       /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/iwlwifi/dvm/iwldvm.ko
license:        GPL
author:         Copyright(c) 2003-2013 Intel Corporation <ilw@linux.intel.com>
version:        in-tree:
description:    Intel(R) Wireless WiFi Link AGN driver for Linux
srcversion:     03CC0BBD2BE23C16DB062DC
depends:        iwlwifi,mac80211,cfg80211
intree:         Y
vermagic:       3.13.0-24-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        <MAC address removed>
sig_hashalgo:   sha512

filename:       /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
license:        GPL
author:         Copyright(c) 2003-2013 Intel Corporation <ilw@linux.intel.com>
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-3160-7.ucode
firmware:       iwlwifi-7260-7.ucode
srcversion:     1E6912E109D5A43B310FB34
alias:          pci:v00008086d0000095Asv*sd00005490bc*sc*i*
alias:          pci:v00008086d0000095Bsv*sd00005290bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005590bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005190bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005090bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005420bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd0000502Abc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005020bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00009410bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00009310bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00009510bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00009210bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00009112bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00009110bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00009012bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00009010bc*sc*i*
alias:          pci:v00008086d0000095Bsv*sd00005202bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005002bc*sc*i*
alias:          pci:v00008086d0000095Bsv*sd00005200bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd0000500Abc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005000bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00001010bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005400bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005410bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005012bc*sc*i*
alias:          pci:v00008086d0000095Bsv*sd00005210bc*sc*i*
alias:          pci:v00008086d0000095Bsv*sd00005302bc*sc*i*
alias:          pci:v00008086d0000095Bsv*sd00005310bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd0000510Abc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005100bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005112bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005110bc*sc*i*
alias:          pci:v00008086d0000095Asv*sd00005010bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00008570bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00008470bc*sc*i*
alias:          pci:v00008086d000008B4sv*sd00008270bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00008062bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00008060bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00008172bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00008170bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00008072bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00008070bc*sc*i*
alias:          pci:v00008086d000008B4sv*sd00000370bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00000472bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00000470bc*sc*i*
alias:          pci:v00008086d000008B4sv*sd00000272bc*sc*i*
alias:          pci:v00008086d000008B4sv*sd00000270bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00000062bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00000060bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00000172bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00000170bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00000072bc*sc*i*
alias:          pci:v00008086d000008B3sv*sd00000070bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C420bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd0000C220bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C02Abc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C020bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C360bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd0000C370bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C560bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C570bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C462bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C460bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C472bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C470bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd0000C262bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd0000C26Abc*sc*i*
alias:          pci:v00008086d000008B2sv*sd0000C260bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd0000C272bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd0000C270bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C760bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C770bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C162bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C062bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C160bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C06Abc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C060bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C170bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C072bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000C070bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004420bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd00004220bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000402Abc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004020bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00005070bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd00004360bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd00004370bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004560bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004570bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004A6Cbc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004A6Ebc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004A70bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000486Ebc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004870bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004462bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000446Abc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004460bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004472bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004470bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd00004262bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd0000426Abc*sc*i*
alias:          pci:v00008086d000008B2sv*sd00004260bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd00004272bc*sc*i*
alias:          pci:v00008086d000008B2sv*sd00004270bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004162bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004062bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004160bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd0000406Abc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004060bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004170bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004072bc*sc*i*
alias:          pci:v00008086d000008B1sv*sd00004070bc*sc*i*
alias:          pci:v00008086d00000892sv*sd00000462bc*sc*i*
alias:          pci:v00008086d00000893sv*sd00000262bc*sc*i*
alias:          pci:v00008086d00000892sv*sd00000062bc*sc*i*
alias:          pci:v00008086d00000894sv*sd00000822bc*sc*i*
alias:          pci:v00008086d00000894sv*sd00000422bc*sc*i*
alias:          pci:v00008086d00000895sv*sd00000222bc*sc*i*
alias:          pci:v00008086d00000894sv*sd00000022bc*sc*i*
alias:          pci:v00008086d0000088Fsv*sd00005260bc*sc*i*
alias:          pci:v00008086d0000088Esv*sd00004860bc*sc*i*
alias:          pci:v00008086d0000088Esv*sd0000446Abc*sc*i*
alias:          pci:v00008086d0000088Esv*sd00004460bc*sc*i*
alias:          pci:v00008086d0000088Fsv*sd0000426Abc*sc*i*
alias:          pci:v00008086d0000088Fsv*sd00004260bc*sc*i*
alias:          pci:v00008086d0000088Esv*sd0000406Abc*sc*i*
alias:          pci:v00008086d0000088Esv*sd00004060bc*sc*i*
alias:          pci:v00008086d00000887sv*sd00004462bc*sc*i*
alias:          pci:v00008086d00000888sv*sd00004262bc*sc*i*
alias:          pci:v00008086d00000887sv*sd00004062bc*sc*i*
alias:          pci:v00008086d00000890sv*sd00004822bc*sc*i*
alias:          pci:v00008086d00000890sv*sd00004422bc*sc*i*
alias:          pci:v00008086d00000891sv*sd00004222bc*sc*i*
alias:          pci:v00008086d00000890sv*sd00004022bc*sc*i*
alias:          pci:v00008086d00000896sv*sd00005027bc*sc*i*
alias:          pci:v00008086d00000896sv*sd00005025bc*sc*i*
alias:          pci:v00008086d00000897sv*sd00005017bc*sc*i*
alias:          pci:v00008086d00000897sv*sd00005015bc*sc*i*
alias:          pci:v00008086d00000896sv*sd00005007bc*sc*i*
alias:          pci:v00008086d00000896sv*sd00005005bc*sc*i*
alias:          pci:v00008086d000008AEsv*sd00001027bc*sc*i*
alias:          pci:v00008086d000008AEsv*sd00001025bc*sc*i*
alias:          pci:v00008086d000008AFsv*sd00001017bc*sc*i*
alias:          pci:v00008086d000008AFsv*sd00001015bc*sc*i*
alias:          pci:v00008086d000008AEsv*sd00001007bc*sc*i*
alias:          pci:v00008086d000008AEsv*sd00001005bc*sc*i*
alias:          pci:v00008086d00000084sv*sd00001316bc*sc*i*
alias:          pci:v00008086d00000084sv*sd00001216bc*sc*i*
alias:          pci:v00008086d00000083sv*sd00001326bc*sc*i*
alias:          pci:v00008086d00000083sv*sd00001226bc*sc*i*
alias:          pci:v00008086d00000083sv*sd00001306bc*sc*i*
alias:          pci:v00008086d00000083sv*sd00001206bc*sc*i*
alias:          pci:v00008086d00000084sv*sd00001315bc*sc*i*
alias:          pci:v00008086d00000084sv*sd00001215bc*sc*i*
alias:          pci:v00008086d00000083sv*sd00001325bc*sc*i*
alias:          pci:v00008086d00000083sv*sd00001225bc*sc*i*
alias:          pci:v00008086d00000083sv*sd00001305bc*sc*i*
alias:          pci:v00008086d00000083sv*sd00001205bc*sc*i*
alias:          pci:v00008086d00000886sv*sd00001317bc*sc*i*
alias:          pci:v00008086d00000886sv*sd00001315bc*sc*i*
alias:          pci:v00008086d00000885sv*sd00001327bc*sc*i*
alias:          pci:v00008086d00000885sv*sd00001325bc*sc*i*
alias:          pci:v00008086d00000885sv*sd00001307bc*sc*i*
alias:          pci:v00008086d00000885sv*sd00001305bc*sc*i*
alias:          pci:v00008086d00000089sv*sd00001316bc*sc*i*
alias:          pci:v00008086d00000089sv*sd00001311bc*sc*i*
alias:          pci:v00008086d00000087sv*sd00001326bc*sc*i*
alias:          pci:v00008086d00000087sv*sd00001321bc*sc*i*
alias:          pci:v00008086d00000087sv*sd00001306bc*sc*i*
alias:          pci:v00008086d00000087sv*sd00001301bc*sc*i*
alias:          pci:v00008086d00000091sv*sd00005226bc*sc*i*
alias:          pci:v00008086d00000091sv*sd00005225bc*sc*i*
alias:          pci:v00008086d00000091sv*sd00005221bc*sc*i*
alias:          pci:v00008086d00000091sv*sd00005207bc*sc*i*
alias:          pci:v00008086d00000091sv*sd00005206bc*sc*i*
alias:          pci:v00008086d00000091sv*sd00005205bc*sc*i*
alias:          pci:v00008086d00000091sv*sd00005201bc*sc*i*
alias:          pci:v00008086d00000090sv*sd00005216bc*sc*i*
alias:          pci:v00008086d00000090sv*sd00005215bc*sc*i*
alias:          pci:v00008086d00000090sv*sd00005211bc*sc*i*
alias:          pci:v00008086d0000008Bsv*sd00005317bc*sc*i*
alias:          pci:v00008086d0000008Bsv*sd00005315bc*sc*i*
alias:          pci:v00008086d0000008Asv*sd00005327bc*sc*i*
alias:          pci:v00008086d0000008Asv*sd00005325bc*sc*i*
alias:          pci:v00008086d0000008Asv*sd00005307bc*sc*i*
alias:          pci:v00008086d0000008Asv*sd00005305bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001305bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001304bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00004820bc*sc*i*
alias:          pci:v00008086d00000085sv*sd0000C228bc*sc*i*
alias:          pci:v00008086d00000085sv*sd0000C220bc*sc*i*
alias:          pci:v00008086d00000082sv*sd0000C020bc*sc*i*
alias:          pci:v00008086d00000085sv*sd00001316bc*sc*i*
alias:          pci:v00008086d00000085sv*sd00001318bc*sc*i*
alias:          pci:v00008086d00000085sv*sd00001311bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001328bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001326bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001321bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001308bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001307bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001306bc*sc*i*
alias:          pci:v00008086d00000082sv*sd00001301bc*sc*i*
alias:          pci:v00008086d00004239sv*sd00001316bc*sc*i*
alias:          pci:v00008086d00004239sv*sd00001311bc*sc*i*
alias:          pci:v00008086d00004238sv*sd00001118bc*sc*i*
alias:          pci:v00008086d00004238sv*sd00001111bc*sc*i*
alias:          pci:v00008086d0000422Csv*sd00001326bc*sc*i*
alias:          pci:v00008086d0000422Csv*sd00001321bc*sc*i*
alias:          pci:v00008086d0000422Csv*sd00001307bc*sc*i*
alias:          pci:v00008086d0000422Csv*sd00001306bc*sc*i*
alias:          pci:v00008086d0000422Csv*sd00001301bc*sc*i*
alias:          pci:v00008086d0000422Bsv*sd00001128bc*sc*i*
alias:          pci:v00008086d0000422Bsv*sd00001121bc*sc*i*
alias:          pci:v00008086d0000422Bsv*sd00001108bc*sc*i*
alias:          pci:v00008086d0000422Bsv*sd00001101bc*sc*i*
alias:          pci:v00008086d0000423Dsv*sd00001316bc*sc*i*
alias:          pci:v00008086d0000423Dsv*sd00001216bc*sc*i*
alias:          pci:v00008086d0000423Dsv*sd00001311bc*sc*i*
alias:          pci:v00008086d0000423Dsv*sd00001211bc*sc*i*
alias:          pci:v00008086d0000423Csv*sd00001326bc*sc*i*
alias:          pci:v00008086d0000423Csv*sd00001321bc*sc*i*
alias:          pci:v00008086d0000423Csv*sd00001221bc*sc*i*
alias:          pci:v00008086d0000423Csv*sd00001306bc*sc*i*
alias:          pci:v00008086d0000423Csv*sd00001206bc*sc*i*
alias:          pci:v00008086d0000423Csv*sd00001301bc*sc*i*
alias:          pci:v00008086d0000423Csv*sd00001201bc*sc*i*
alias:          pci:v00008086d0000423Bsv*sd00001011bc*sc*i*
alias:          pci:v00008086d0000423Asv*sd00001021bc*sc*i*
alias:          pci:v00008086d0000423Asv*sd00001001bc*sc*i*
alias:          pci:v00008086d00004236sv*sd00001114bc*sc*i*
alias:          pci:v00008086d00004236sv*sd00001014bc*sc*i*
alias:          pci:v00008086d00004236sv*sd00001111bc*sc*i*
alias:          pci:v00008086d00004236sv*sd00001011bc*sc*i*
alias:          pci:v00008086d00004235sv*sd00001104bc*sc*i*
alias:          pci:v00008086d00004235sv*sd00001004bc*sc*i*
alias:          pci:v00008086d00004235sv*sd00001101bc*sc*i*
alias:          pci:v00008086d00004235sv*sd00001001bc*sc*i*
alias:          pci:v00008086d00004235sv*sd00001124bc*sc*i*
alias:          pci:v00008086d00004235sv*sd00001024bc*sc*i*
alias:          pci:v00008086d00004235sv*sd00001121bc*sc*i*
alias:          pci:v00008086d00004235sv*sd00001021bc*sc*i*
alias:          pci:v00008086d00004237sv*sd00001316bc*sc*i*
alias:          pci:v00008086d00004237sv*sd00001216bc*sc*i*
alias:          pci:v00008086d00004237sv*sd00001315bc*sc*i*
alias:          pci:v00008086d00004237sv*sd00001215bc*sc*i*
alias:          pci:v00008086d00004237sv*sd00001314bc*sc*i*
alias:          pci:v00008086d00004237sv*sd00001214bc*sc*i*
alias:          pci:v00008086d00004237sv*sd00001311bc*sc*i*
alias:          pci:v00008086d00004237sv*sd00001211bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001326bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001226bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001325bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001225bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001324bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001224bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001321bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001221bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001306bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001206bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001305bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001205bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001304bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001204bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001301bc*sc*i*
alias:          pci:v00008086d00004232sv*sd00001201bc*sc*i*
depends:        cfg80211
intree:         Y
vermagic:       3.13.0-24-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        <MAC address removed>
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, 2=enable (default: 0) (int)
parm:           nvm_file:NVM file name (charp)
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)

##### modules #####

lp
rtc

##### blacklist #####

[/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/fbdev-blacklist.conf]
blacklist arkfb
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist cirrusfb
blacklist cyber2000fb
blacklist gx1fb
blacklist gxfb
blacklist kyrofb
blacklist matroxfb_base
blacklist mb862xxfb
blacklist neofb
blacklist nvidiafb
blacklist pm2fb
blacklist pm3fb
blacklist s3fb
blacklist savagefb
blacklist sisfb
blacklist tdfxfb
blacklist tridentfb
blacklist viafb
blacklist vt8623fb

##### udev rules #####

# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x8086:0x008a (iwlwifi)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

##### dmesg #####

[   12.779471] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[   12.779700] iwlwifi 0000:03:00.0: irq 52 for MSI/MSI-X
[   12.952488] iwlwifi 0000:03:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[   12.975189] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[   12.975190] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[   12.975191] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[   12.975193] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Wireless-N 1030 BGN, REV=0xB0
[   12.976696] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[   13.005222] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[   20.255867] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[   20.262927] iwlwifi 0000:03:00.0: Radio type=0x2-0x2-0x1
[   20.332456] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[   20.339445] iwlwifi 0000:03:00.0: Radio type=0x2-0x2-0x1
[   20.443949] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   20.450785] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   21.617741] wlan0: authenticate with <MAC address removed>
[   21.630446] wlan0: send auth to <MAC address removed> (try 1/3)
[   21.632895] wlan0: authenticated
[   21.633789] wlan0: associate with <MAC address removed> (try 1/3)
[   21.637784] wlan0: RX AssocResp from <MAC address removed> (capab=0x431 status=0 aid=1)
[   21.641195] wlan0: associated
[   21.641216] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   21.674553] wlan0: deauthenticating from <MAC address removed> by local choice (reason=2)
[   21.683915] wlan0: authenticate with <MAC address removed>
[   21.693981] wlan0: send auth to <MAC address removed> (try 1/3)
[   21.697350] wlan0: authenticated
[   21.697795] wlan0: associate with <MAC address removed> (try 1/3)
[   21.701935] wlan0: RX AssocResp from <MAC address removed> (capab=0x431 status=0 aid=1)
[   21.704963] wlan0: associated
[  155.639757] wlan0: deauthenticated from <MAC address removed> (Reason: 6)
[  156.276313] wlan0: authenticate with <MAC address removed>
[  156.313971] wlan0: send auth to <MAC address removed> (try 1/3)
[  156.505695] wlan0: send auth to <MAC address removed> (try 2/3)
[  156.778111] wlan0: send auth to <MAC address removed> (try 3/3)
[  156.890277] wlan0: authentication with <MAC address removed> timed out
[  163.452420] wlan0: authenticate with <MAC address removed>
[  163.464032] wlan0: send auth to <MAC address removed> (try 1/3)
[  163.466567] wlan0: authenticated
[  163.468363] wlan0: associate with <MAC address removed> (try 1/3)
[  163.472684] wlan0: RX AssocResp from <MAC address removed> (capab=0x431 status=0 aid=1)
[  163.476191] wlan0: associated
[  219.471787] iwlwifi 0000:03:00.0: RF_KILL bit toggled to disable radio.
[  219.471925] wlan0: deauthenticating from <MAC address removed> by local choice (reason=3)
[  219.471984] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.471990] wlan0: HW problem - can not stop rx aggregation for <MAC address removed> tid 0
[  219.472067] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.472074] wlan0: failed to remove key (0, <MAC address removed>) from hardware (-5)
[  219.472243] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.472254] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.472264] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.472276] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.472294] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.472352] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.472368] wlan0: failed to remove key (1, <MAC address removed>) from hardware (-5)
[  219.515032] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.515077] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  219.676376] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  222.468972] iwlwifi 0000:03:00.0: RF_KILL bit toggled to enable radio.
[  222.471799] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[  222.478860] iwlwifi 0000:03:00.0: Radio type=0x2-0x2-0x1
[  222.589062] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  223.060813] wlan0: authenticate with <MAC address removed>
[  223.070540] wlan0: send auth to <MAC address removed> (try 1/3)
[  223.176568] wlan0: send auth to <MAC address removed> (try 2/3)
[  223.179090] wlan0: authenticated
[  223.180569] wlan0: associate with <MAC address removed> (try 1/3)
[  223.186375] wlan0: RX AssocResp from <MAC address removed> (capab=0x431 status=0 aid=1)
[  223.214520] wlan0: associated
[  223.214598] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[  268.656783] wlan0: deauthenticating from <MAC address removed> by local choice (reason=3)
[  270.882631] iwlwifi 0000:03:00.0: RF_KILL bit toggled to disable radio.
[  270.915600] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  270.915641] iwlwifi 0000:03:00.0: Not sending command - RF KILL
[  285.138368] iwlwifi 0000:03:00.0: RF_KILL bit toggled to enable radio.
[  285.141652] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[  285.148747] iwlwifi 0000:03:00.0: Radio type=0x2-0x2-0x1
[  285.157644] iwlwifi 0000:03:00.0: RF_KILL bit toggled to disable radio.
[  285.182970] iwlwifi 0000:03:00.0: Loaded ucode is not valid!
[  285.182984] iwlwifi 0000:03:00.0: Failed to start RT ucode: -5
[  285.183697] iwlwifi 0000:03:00.0: Unable to initialize device.
[  287.968911] iwlwifi 0000:03:00.0: RF_KILL bit toggled to enable radio.
[  287.970891] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[  287.977910] iwlwifi 0000:03:00.0: Radio type=0x2-0x2-0x1
[  288.091401] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  288.940160] wlan0: authenticate with <MAC address removed>
[  288.950495] wlan0: send auth to <MAC address removed> (try 1/3)
[  288.952934] wlan0: authenticated
[  288.954483] wlan0: associate with <MAC address removed> (try 1/3)
[  288.958544] wlan0: RX AssocResp from <MAC address removed> (capab=0x431 status=0 aid=1)
[  288.963297] wlan0: associated
[  288.963356] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[  288.988010] wlan0: deauthenticating from <MAC address removed> by local choice (reason=2)
[  288.996525] wlan0: authenticate with <MAC address removed>
[  289.006216] wlan0: send auth to <MAC address removed> (try 1/3)
[  289.008666] wlan0: authenticated
[  289.010524] wlan0: associate with <MAC address removed> (try 1/3)
[  289.016212] wlan0: RX AssocResp from <MAC address removed> (capab=0x431 status=0 aid=1)
[  289.018583] wlan0: associated

########## wireless info END ############

**varunendra** · April 28th, 2014

Originally Posted by ytreza2

I tried to:
- change my AP from "mixed" mode to "WPA2".
- temporarily disable Wi-Fi n on my card by using :

Code:

sudo modprobe iwlwifi -r
sudo modprobe iwlwifi 11n_disable=0

- install and configure ndiswrapper, unsuccessfully.

Actually the correct value of the parameter "11n_disable" is "1" to disable "N" mode. (It is simple Boolean value - 1=yes, 0=no; you want "11n_disable" to be "yes"

).

Here's a detailed description of how to determine and use driver parameters, with example of "iwlwifi" and "iwlmvm" (you are not using "iwlmvm", so that part doesn't apply to your case) : http://ubuntuforums.org/showpost.php?p=12943350

I hope the script report you posted is a fresh one, and you haven't tried ndiswrapper AFTER creating the report. Point is - ndiswrapper is not going to help with this card and there should be no traces of it if you wish to troubleshoot it with the native linux drivers.

**ytreza2** · April 28th, 2014

Thank you Varunendra

Actually the correct value of the parameter "11n_disable" is "1" to disable "N" mode. (It is simple Boolean value - 1=yes, 0=no; you want "11n_disable" to be "yes"

).

Oops ! A simple error with copy/paste. Here are the exacts commands I have tried :

Code:

sudo rmmod iwldvm #otherwise iwlwifi refuses to stop
sudo rmmod iwlwifi
sudo modprobe iwlwifi 11n_disable=1
sudo modprobe iwldvm

I hope the script report you posted is a fresh one, and you haven't tried ndiswrapper AFTER creating the report.

Yes, it's a fresh report. I generated it just before writing the post. I just removed the ndiswrapper module from the kernel, but I have not uninstalled it yet.

Here's a detailed description of how to determine and use driver parameters, with example of "iwlwifi" and "iwlmvm" (you are not using "iwlmvm", so that part doesn't apply to your case) : http://ubuntuforums.org/showpost.php?p=12943350

Thank you, I'll take a look and I will give you the result as soon as possible.

**varunendra** · April 28th, 2014

Just one more tip -

ALWAYS use "modprobe -r" instead of "rmmod". It is a smarter and safer way to remove modules. In the background, it executes rmmod, just smartly ('rmmod' or 'insmod' don't care about dependencies, while 'modprobe' and 'modprobe -r' do).

**name5** · May 1st, 2014

I have a similar problem with Intel Centrino 1000. With Ubuntu 13.04, I needed the modprobe iwlwifi 11n_disable=1 to get it to work. However, this does not work with 14.04. Now there is a iwldvm that depends on iwlwifi. This must be removed before changing iwlwifi, but it does not connect at all. I've tried.

command:
modprobe -r iwlwifi
response:
modprobe: FATAL: Module iwlwifi is in use.

command:
lsmod | grep iwlwifi
response:
iwlwifi iwldvm
cfg80211 iwlwifi,mac80211,iwldvm

commands:
modprobe -r iwldvm
modprobe -r iwlwifi
modprobe iwlwifi 11n_disable=1
modprobe iwldvm

Wifi is enabled and sees many networks, but will not connect to any. This computer connected fine in 13.04 and still connects when booted into Windows 7 (ugh).

**ytreza2** · May 1st, 2014

Thank you very much Varunendra !

I followed your instructions and now my Wi-Fi connection works properly!

**varunendra** · May 3rd, 2014

Awesome! Glad it helped.

@name5,
If you are still looking for a solution to the problem, please start a new thread and wait for someone to pick it up. A new thread with a descriptive title will have much better chance to get you proper help. I have almost no time to look into these issues these days, sorry.

It may increase your chance to get proper help if you also post a report of "wireless_script" which you can find in the "Wireless Script" link in my signature below. Good Luck!

Thread: Wi-Fi disconnects unexpectedly - Ubuntu 14.04 - Intel Centrino Wireless N-1030

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