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Thread: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 2230

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  1. #1
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    Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 2230

    Hi everyone, fairly new to Linux. I've installed Ubuntu 12.04 on my Asus N76VZ, and I'm having issues with the wireless connection dropping every few minutes. I can disconnect and reconnect and it will then work again.

    I've already tried disabling IPV6, but that doesn't seem to do anything for me.

    From: -lspci
    Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

    From: -ifconfig
    lo Link encap:Local Loopback
    inet addr:127.0.0.1 Mask:255.0.0.0
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    RX packets:5791 errors:0 dropped:0 overruns:0 frame:0
    TX packets:5791 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:558665 (558.6 KB) TX bytes:558665 (558.6 KB)

    wlan0 Link encap:Ethernet HWaddr 68:5d:43:74:0f:09
    inet addr:192.168.1.36 Bcast:192.168.1.255 Mask:255.255.255.0
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:136930 errors:0 dropped:0 overruns:0 frame:0
    TX packets:85434 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:175053810 (175.0 MB) TX bytes:11473651 (11.4 MB)

    From -iwconfig wlan0
    wlan0 IEEE 802.11bgn ESSID:"SINGTEL-2042"
    Mode:Managed Frequency:2.462 GHz Access Point: 98:2C:BE:EDB:B2
    Bit Rate=6 Mb/s Tx-Power=0 dBm
    Retry long limit:7 RTS thrff Fragment thrff
    Power Managementff
    Link Quality=41/70 Signal level=-69 dBm
    Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
    Tx excessive retries:3741 Invalid misc:457 Missed beacon:0

    And from: sudo lshw -C network
    *-network
    description: Wireless interface
    product: Centrino Wireless-N 2230
    vendor: Intel Corporation
    physical id: 0
    bus info: pci@0000:03:00.0
    logical name: wlan0
    version: c4
    serial: 68:5d:43:74:0f:09
    width: 64 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=iwlwifi driverversion=3.4.0-030400-generic firmware=18.168.6.1 ip=192.168.1.36 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
    resources: irq:45 memory:f7900000-f7901fff
    *-network UNCLAIMED
    description: Ethernet controller
    product: AR8161 Gigabit Ethernet
    vendor: Atheros Communications Inc.
    physical id: 0
    bus info: pci@0000:04:00.0
    version: 08
    width: 64 bits
    clock: 33MHz
    capabilities: pm pciexpress msi msix bus_master cap_list
    configuration: latency=0
    resources: memory:f7800000-f783ffff ioport:d000(size=128)

  2. #2
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    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    Let's try a driver parameter. Please do:
    Code:
    sudo modprobe -r iwlwifi
    sudo modprobe iwlwifi 11n_disable=1
    If it helps, we'll write one quick file and make it persistent.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #3
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    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    This seems to have helped! How do I make that permanent?

  4. #4
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    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    Quote Originally Posted by blinduck View Post
    This seems to have helped! How do I make that permanent?
    Please do:
    Code:
    sudo gedit /etc/modprobe.d/iwlwifi.conf
    A new, empty file will open. Use kate or leafpad or any text editor if you don't have gedit. Add a single line:
    Code:
    options iwlwifi 11n_disable=1
    Proofread, save and close the text editor. You should be all set.

    So the searchers can find the answer, please use thread tools at the top to mark Solved.

    Have fun!
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  5. #5
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    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    Ok scratch that, nope it doesn't seem to work. Connection still drops frequently. Seems to be a random thing, doesn't follow any pattern..

    Any other suggestions?

  6. #6
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    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    You might try a different parameter:
    Code:
    sudo gedit /etc/modprobe.d/iwlwifi.conf
    Change the contents to:
    Code:
    options iwlwifi 11n_disable=1 bt_coex_active=N
    Proofread, save and close the text editor. Reboot and let us have your report.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  7. #7
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    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    Quote Originally Posted by chili555 View Post
    Let's try a driver parameter. Please do:
    Code:
    sudo modprobe -r iwlwifi
    sudo modprobe iwlwifi 11n_disable=1
    If it helps, we'll write one quick file and make it persistent.
    It worked for me!
    Dell Inspiron 7520
    08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

  8. #8
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    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    Quote Originally Posted by chili555 View Post
    Let's try a driver parameter. Please do:
    Code:
    sudo modprobe -r iwlwifi
    sudo modprobe iwlwifi 11n_disable=1
    If it helps, we'll write one quick file and make it persistent.
    That worked for me, too!

    Asus N76V
    03:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

    Great, thank you!

  9. #9
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    Xubuntu 12.10 Quantal Quetzal

    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    this seems to be a persistent problem with all intel Centrino variants, i have option of ditching my Centrino and using Killer's Bigfoot Wireless instead, are there similar issues with that particular wifi card?

    Additionally after a kernel update sometimes the problem comes back and becomes persistent regardless of what solution may have worked in the past.

  10. #10
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    Re: Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 223

    i have option of ditching my Centrino and using Killer's Bigfoot Wireless instead, are there similar issues with that particular wifi card?
    The Bigfoot wireless I am familiar with uses the driver ath9k. Search this forum and see if there are ever any disconnects and drops or slow speeds with ath9k. Here, for example: http://ubuntuforums.org/showthread.p...ighlight=ath9k

    Have you tried turning N speeds off at the router? My iwlwifi device is about perfect.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

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