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Thread: Intel Centrino Wireless-N 2230 connection is very slow

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    Join Date
    Sep 2014
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    Intel Centrino Wireless-N 2230 connection is very slow

    Now that I have switched to Ubuntu the connection speed for my wireless internet has dramtically decreased. It takes noticeably longer for pages to load and such.

    I have tried the modprobe -r command and removing N, but when I do that, my connection goes out and is never restored. I'm pretty sure that in this issue of Ubuntu the intel drivers are all up to date. I can't really figure the problem.

    Code:
    ########## wireless info START ##########
    
    Report from: 30 Sep 2014 17:46 EDT -0400
    
    Booted last: 30 Sep 2014 09:43 EDT -0400
    
    Script from: 20 Sep 2014 23:04 UTC +0000
    
    ##### release ###########################
    
    Distributor ID:    Ubuntu
    Description:    Ubuntu 14.04.1 LTS
    Release:    14.04
    Codename:    trusty
    
    ##### kernel ############################
    
    Linux 3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3 21:30:07 UTC 2014 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 Centrino Wireless-N 2230 [8086:0887] (rev c4)
        Subsystem: Intel Corporation Centrino Wireless-N 2230 BGN [8086:4062]
        Kernel driver in use: iwlwifi
    
    03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 07)
        Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:0123]
        Kernel driver in use: r8169
    
    ##### lsusb #############################
    
    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 001 Device 004: ID 8087:07da Intel Corp. 
    Bus 001 Device 003: ID 1bcf:2883 Sunplus Innovation Technology 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
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 006: ID 12ba:0034 Licensed by Sony Computer Entertainment America 
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    
    ##### PCMCIA card info ##################
    
    ##### rfkill ############################
    
    0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
    1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    2: asus-wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    3: asus-bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no
    
    ##### lsmod #############################
    
    asus_nb_wmi            16990  0 
    asus_wmi               24191  1 asus_nb_wmi
    sparse_keymap          13948  1 asus_wmi
    iwldvm                232285  0 
    mac80211              630653  1 iwldvm
    iwlwifi               169932  1 iwldvm
    cfg80211              484040  3 iwlwifi,mac80211,iwldvm
    wmi                    19177  1 asus_wmi
    video                  19476  2 i915,asus_wmi
    
    ##### interfaces ########################
    
    auto lo
    iface lo inet loopback
    
    ##### ifconfig ##########################
    
    eth0      Link encap:Ethernet  HWaddr <MAC 'eth0' [IF]>  
              UP BROADCAST MULTICAST  MTU:1500  Metric:1
              RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
    
    wlan0     Link encap:Ethernet  HWaddr <MAC 'wlan0' [IF]>  
              inet addr:192.168.1.5  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::6a5d:43ff:feab:53c9/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:8897331 errors:0 dropped:0 overruns:0 frame:0
              TX packets:6048335 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:9719553093 (9.7 GB)  TX bytes:3986207152 (3.9 GB)
    
    ##### iwconfig ##########################
    
    eth0      no wireless extensions.
    
    lo        no wireless extensions.
    
    wlan0     IEEE 802.11bgn  ESSID:"NETGEAR76"  
              Mode:Managed  Frequency:2.437 GHz  Access Point: <MAC 'NETGEAR76' [AC1]>   
              Bit Rate=90 Mb/s   Tx-Power=16 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:on
              Link Quality=70/70  Signal level=-38 dBm  
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:12  Invalid misc:323389   Missed beacon:0
    
    ##### route #############################
    
    Kernel IP routing table
    Destination     Gateway         Genmask         Flags 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
    
    ##### nm-tool ###########################
    
    NetworkManager Tool
    
    State: connected (global)
    
    - Device: eth0 -----------------------------------------------------------------
      Type:              Wired
      Driver:            r8169
      State:             unavailable
      Default:           no
      HW Address:        <MAC 'eth0' [IF]>
    
      Capabilities:
        Carrier Detect:  yes
    
      Wired Properties
        Carrier:         off
    
    - Device: wlan0  [NETGEAR76] ---------------------------------------------------
      Type:              802.11 WiFi
      Driver:            iwlwifi
      State:             connected
      Default:           yes
      HW Address:        <MAC 'wlan0' [IF]>
    
      Capabilities:
        Speed:           90 Mb/s
    
      Wireless Properties
        WEP Encryption:  yes
        WPA Encryption:  yes
        WPA2 Encryption: yes
    
      Wireless Access Points (* = current AP)
        *NETGEAR76:      Infra, <MAC 'NETGEAR76' [AC1]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 78 WPA2
    
      IPv4 Settings:
        Address:         192.168.1.5
        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
    
    ##### NetworkManager profiles ###########
    
    [[/etc/NetworkManager/system-connections/NETGEAR76]] (600 root)
    [connection] id=NETGEAR76 | type=802-11-wireless
    [802-11-wireless] ssid=NETGEAR76 | mac-address=<MAC 'wlan0' [IF]>
    [ipv4] method=auto
    [ipv6] method=auto
    
    [[/etc/NetworkManager/system-connections/sulura]] (600 root)
    [connection] id=sulura | type=802-11-wireless
    [802-11-wireless] ssid=sulura | mac-address=<MAC 'wlan0' [IF]>
    [ipv4] method=auto
    [ipv6] method=auto
    
    ##### iw reg get ########################
    
    Region: America/Toronto (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 ###################
    
    eth0      no frequency information.
    
    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 #######################
    
    Channel occupancy:
    
          1   APs on   Frequency:2.437 GHz (Channel 6)
    
    eth0      Interface doesn't support scanning.
    
    lo        Interface doesn't support scanning.
    
    wlan0     Scan completed :
              Cell 01 - Address: <MAC 'NETGEAR76' [AC1]>
                        Channel:6
                        Frequency:2.437 GHz (Channel 6)
                        Quality=70/70  Signal level=-33 dBm  
                        Encryption key:on
                        ESSID:"NETGEAR76"
                        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=00000117f2f37d73
                        Extra: Last beacon: 68ms ago
                        IE: IEEE 802.11i/WPA2 Version 1
                            Group Cipher : CCMP
                            Pairwise Ciphers (1) : CCMP
                            Authentication Suites (1) : PSK
    
    ##### module infos ######################
    
    [iwldvm]
    filename:       /lib/modules/3.13.0-36-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:     CC4D1BA11C1EF73A6ABDE53
    depends:        iwlwifi,mac80211,cfg80211
    intree:         Y
    vermagic:       3.13.0-36-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
    sig_hashalgo:   sha512
    
    [mac80211]
    filename:       /lib/modules/3.13.0-36-generic/kernel/net/mac80211/mac80211.ko
    license:        GPL
    description:    IEEE 802.11 subsystem
    srcversion:     B822641624778B987844F6F
    depends:        cfg80211
    intree:         Y
    vermagic:       3.13.0-36-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
    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/3.13.0-36-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-7265-7.ucode
    firmware:       iwlwifi-3160-7.ucode
    firmware:       iwlwifi-7260-7.ucode
    srcversion:     C2D0F3DFCA289585C100E36
    depends:        cfg80211
    intree:         Y
    vermagic:       3.13.0-36-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
    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)
    
    [cfg80211]
    filename:       /lib/modules/3.13.0-36-generic/kernel/net/wireless/cfg80211.ko
    description:    wireless configuration support
    license:        GPL
    author:         Johannes Berg
    srcversion:     C2478077E22138832B71659
    depends:        
    intree:         Y
    vermagic:       3.13.0-36-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
    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 #################
    
    [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_restart: Y
    led_mode: 0
    nvm_file: (null)
    power_level: 0
    power_save: N
    swcrypto: 0
    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
    
    ##### rc.local ##########################
    
    exit 0
    
    ##### pm-utils ##########################
    
    ##### udev rules ########################
    
    [/etc/udev/rules.d/70-persistent-net.rules]
    # PCI device 0x10ec:0x8168 (r8169)
    SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
    # PCI device 0x8086:0x0887 (iwlwifi)
    SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
    
    ##### dmesg #############################
    
    [   19.438636] wlan0: RX AssocResp from <MAC 'NETGEAR76' [AC1]> (capab=0x411 status=0 aid=4)
    [   19.440921] wlan0: associated
    [   19.440946] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
    [  763.801540] wlan0: cannot understand ECSA IE operating class 12, disconnecting
    [  764.460206] wlan0: authenticate with <MAC 'NETGEAR76' [AC1]>
    [  764.464127] wlan0: send auth to <MAC 'NETGEAR76' [AC1]> (try 1/3)
    [  764.466894] wlan0: authenticated
    [  764.469708] wlan0: associate with <MAC 'NETGEAR76' [AC1]> (try 1/3)
    [  764.501379] wlan0: associate with <MAC 'NETGEAR76' [AC1]> (try 2/3)
    [  764.541961] wlan0: associate with <MAC 'NETGEAR76' [AC1]> (try 3/3)
    [  764.576505] wlan0: association with <MAC 'NETGEAR76' [AC1]> timed out
    [  765.572875] wlan0: authenticate with <MAC 'NETGEAR76' [AC1]>
    [  765.575968] wlan0: send auth to <MAC 'NETGEAR76' [AC1]> (try 1/3)
    [  765.578685] wlan0: authenticated
    [  765.582865] wlan0: associate with <MAC 'NETGEAR76' [AC1]> (try 1/3)
    [  765.586539] wlan0: RX AssocResp from <MAC 'NETGEAR76' [AC1]> (capab=0x411 status=0 aid=4)
    [  765.589265] wlan0: associated
    [ 5461.538029] wlan0: AP <MAC 'NETGEAR76' [AC1]> changed bandwidth, new config is 2437 MHz, width 1 (2437/0 MHz)
    [ 6963.922187] wlan0: AP <MAC 'NETGEAR76' [AC1]> changed bandwidth, new config is 2437 MHz, width 2 (2447/0 MHz)
    
    ########## wireless info END ############
    Last edited by proxy2; October 3rd, 2014 at 01:54 AM.

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