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The head-scratcher is this: My atheros-based laptop cannot connect to wireless networks running on low channels. The lower the channel, the worse the connection. At channel 1, I cannot even ...
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  1. #1
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    Question Not Your Another Common Network Problem


    The head-scratcher is this:

    My atheros-based laptop cannot connect to wireless networks running on low channels.
    The lower the channel, the worse the connection. At channel 1, I cannot even ping local routers. It starts at 400ms and after few retries reaches 50 000ms, then times out indefinitely.

    On channel 11 everything works flawlessly, on 9 and 10 - moderately good.


    Before you jump to obvious conclusions, let me rule out some obvious conclusions:

    1. Hardware fault:
    - everything works fine under Windows, live CD of Ubuntu 9.10 and 10.04, BackTrack liveCD

    2. Settings problem:
    - it first occurred on ubuntu 9.04 (few months after installation) and after upgrading to 10.04 problem continues
    - it also occurs on freshly installed Arch which has NO settings nor files imported from old linux
    - occures on gnome (Ubuntu) and pure xfce4 (arch)

    3. Location, router, overloaded band:
    - it occurs in various countries, various cities, various networks
    - it occurs even if all wifis are running on 11 and only one on channel 1

    4. Drivers:
    - tried ath5x and madwifi

    5. Kernel:
    - it keeps happening with every kernel since Oct 2009. Before, I did not test it.
    - it works on kernel supplied on livecds of Ubuntu 9.10 and 10.04
    - it is happening at least since 2.6.31 onwards (2.6.34 included)

    6. Network Manager and WICD:
    - happens using either of them

    So, give it your best shot. I have been trying to find an answer to it on various forums since October last year and yet came up with a solution.

  2. #2
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    The only part I can relate to is:

    - Works fine in Windows, and a few Linux distros.
    - Times-out indefinitely.
    - The same stuff on WICD and Network manager.

    Try disabling ipv6, and then try setting the hosts line on the nsswitch.conf to "hosts: files dns". I don't know how I can relate it to this, but it did work for me when I was on Sabayon, but didn't *sigh* on Mint. We might have a different problem here.

    By the way, mine used to start with these kinds of wireless problems after a few updates.

  3. #3
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    Was worth a try but did not work

  4. #4
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    Out of ideas. Sorry. I'm still learning Linux... the hard way. WIFI seems to be our greatest problems.

  5. #5
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    Quote Originally Posted by kpbotbot View Post
    Out of ideas. Sorry. I'm still learning Linux... the hard way. WIFI seems to be our greatest problems.
    Closely followed by undervolting capabilities.

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