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Thread: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 2230

  1. #11
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    Re: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 223

    If you wish to try a driver parameter temporarily:
    Code:
    sudo modprobe -r <module>
    sudo modprobe <module> <parameter>
    The conf file is used to invoke the parameter automagically persistently on boot:
    Code:
    options <module> <parameter>
    Learn what parameters are available with modinfo. For example:
    chili@LAPTOP410:~$ modinfo iwlwifi
    filename: /lib/modules/3.5.0-17-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
    alias: iwlagn
    license: GPL
    author: Copyright(c) 2003-2012 Intel Corporation <ilw@linux.intel.com>
    version: in-tree:
    description: Intel(R) Wireless WiFi Link AGN driver for Linux
    firmware: iwlwifi-5150-2.ucode
    firmware: iwlwifi-5000-5.ucode
    <snip>
    vermagic: 3.5.0-17-generic SMP mod_unload modversions 686
    parm: swcrypto:using crypto in software (default 0 [hardware]) (int)
    parm: 11n_disable:disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX (uint)
    parm: amsdu_size_8K:enable 8K amsdu size (int)
    parm: fw_restart:restart firmware in case of error (int)
    parm: antenna_coupling:specify antenna coupling in dB (defualt: 0 dB) (int)
    parm: bt_ch_inhibition:Enable BT channel inhibition (default: enable) (bool)
    parm: plcp_check:Check plcp health (default: 1 [enabled]) (bool)
    parm: wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable, 2=enable (default: 0) (int)
    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: auto_agg:enable agg w/o check traffic load (default: enable) (bool)
    parm: 5ghz_disable:disable 5GHz band (default: 0 [enabled]) (bool)
    Note some parameters are invoked with an integer (int) and some boolean (bool). In most cases, boolean means Y or N.

    Finally, see what state parameters are set to with:
    Code:
    cat /sys/module/<module>/parameters/<parameter>
    For example:
    chili@LAPTOP410:~$ cat /sys/module/iwlwifi/parameters/11n_disable
    0
    There ya go! That's all I know about parameters; however, the day is early!
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  2. #12
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    Re: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 223

    Would it help to download the drivers directly?

    Is there a way to tell what version the kernel is currently using?

  3. #13
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    Re: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 223

    If you haven't downloaded and compiled compat-wireless, I'm sure you have the stock in-tree version. Before we try compat-wireless, please do:
    Code:
    sudo gedit /etc/modprobe.d/iwlwifi.conf
    As has been pointed out above, it ought to contain text already:
    Code:
    # /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
    At the end, add one new line:
    Code:
    options iwlwifi 11n_disable=1 bt_coex_active=N
    Proofread, save and close gedit. Reboot and let us have a report.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  4. #14
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    Re: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 223

    Hi Chili,

    Just to let you know I have done this.

    I'm trialling it for a bit. The network speed is dropping down every now and again but seems (at the moment) to have much better speed at distance and when it does drop down recovers fast.

    Thanks,
    Slip

  5. #15
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    Re: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 223

    We look forward to your report.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  6. #16
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    Re: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 223

    I've been trying it out for a few days now, it's quite subjective but I think it's better in some areas.

    In other areas though it's still unusable at relatively short distances ~20 feet

  7. #17
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    Re: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 223

    Any other ideas in the offing?

  8. #18
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    Re: Wireless issues Novatech 1411 / Ubuntu 12.10/Kernel 3.5.0-17/Intel Wireless-N 223

    Quote Originally Posted by slipp3ryWhippit View Post
    Any other ideas in the offing?
    Sorry, my best shot is above. If that doesn't do it, I'm afraid I have nothing further.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

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