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Thread: Can't connect to wireless after 11.10 upgrade

  1. #71
    Join Date
    Oct 2011
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    1

    Re: Can't connect to wireless after 11.10 upgrade

    Quote Originally Posted by hero1900 View Post
    i have the same issue here with Intel Corporation PRO/Wireless 3945ABG card and it sometimes connect and disconnect after while i have usb wireless adapter which i am using now but it also has problem with this new kernel its really sucks i use tp-link TL-WN722NC, so i think 11.10 have serious issue with networking. since i have another 2 friends who has same issue and with different hardware. i think ubuntu developers should seriously look in this. please help us soon i like the new ubuntu but need to go back to 10.4 now.
    I have the same problem with intel 4965. I'm very sad for this. I hope in a kernel update, becouse I love ubuntu and last function....

  2. #72
    Join Date
    Feb 2008
    Location
    Texas
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    14,845
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Can't connect to wireless after 11.10 upgrade

    Hi, for the people with the 3945
    http://ubuntuforums.org/showthread.php?t=1859558&page=3
    Post 21.
    If that does not work then try this please:
    http://ubuntuforums.org/showthread.php?t=1865420&page=2
    Post 12.

    I am not on much right now, I am helping someone with a guide for the forum.
    Good Luck

  3. #73
    Join Date
    Oct 2008
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    48

    Re: Can't connect to wireless after 11.10 upgrade

    I have the oh-so-dreaded Intel 5100 AGN inside my HP Pavilion dv7 laptop.

    I was able to connect to my AP on my cell phone just fine, but had trouble, after the upgrade to 11.10, connecting to my also dreaded, Linksys WRT54G.

    Disabling "n" capabilities on the card did not help matters. Downgrading to a 2.6.32 kernel did not help either.

    What DID help was replacing "NetworkManager" with "wicd". That worked on both the old and new kernels WITH "n" capabilities enabled on the card.

    Given my performance observations of the two kernels, however, I will DEFINITELY be sticking with the 2.6.32 kernel. It is WAY faster and I don't see the occasional hangs that I had been experiencing on a couple different boxes running the 3.0.0 kernel.

    I hope this saves some poor sole the aggravation I went through.

    Cheers,
    Steve Maring
    Tampa, FL

  4. #74
    Join Date
    Oct 2008
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    48

    Re: Can't connect to wireless after 11.10 upgrade

    an update ...

    It would appear that a recent update now has the 3.0.X kernel working with my wireless and NetworkManager without having to use wicd. Strangely, the 2.6.X kernel still requires wicd to connect to my AP.

    -Steve Maring
    Tampa, FL

  5. #75
    Join Date
    Feb 2008
    Location
    Texas
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    14,845
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Can't connect to wireless after 11.10 upgrade

    Hi smaring, glad to hear it.
    Enjoy

  6. #76
    Join Date
    Feb 2007
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    4

    Re: Can't connect to wireless after 11.10 upgrade

    found a solution at http://bugzilla.intellinuxwireless.o...ug.cgi?id=2325

    Code:
    rmmod iwlagn
    modprobe iwlagn bt_coex_active=0

  7. #77
    Join Date
    Feb 2008
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    22

    Re: Can't connect to wireless after 11.10 upgrade

    Thank you esaloch, that seemed to do the trick.
    I made it permanent by editing the iwlagn.conf file

    sudo gedit /etc/modprobe.d/iwlagn.conf

    and adding the line:

    options iwlagn bt_coex_active=0
    Last edited by ajcjh; March 4th, 2012 at 02:54 AM.

  8. #78
    Join Date
    Oct 2011
    Beans
    3

    Re: Can't connect to wireless after 11.10 upgrade

    Quote Originally Posted by ajcjh View Post
    Thank you esaloch, that seemed to do the trick.
    I made it permanent by editing the iwlagn.conf file

    sudo gedit /etc/modprobe.d/iwlagn.conf

    and adding the line:

    options iwlagn bt_coex_active=0
    It work... mine however is...

    options iwlwifi bt_coex_active=0


  9. #79
    Join Date
    Feb 2012
    Beans
    18

    Re: Can't connect to wireless after 11.10 upgrade

    When trying the above solution I get an error message:

    Code:
    rmmod iwlagn
    ERROR: Removing 'iwlagn': Operation not permitted
    Is there a work around this?

  10. #80
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    14,845
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Can't connect to wireless after 11.10 upgrade

    Hi Stretchkev1, try it like this:
    Code:
    sudo rmmod iwlagn
    are you sure you are using that driver?
    Thanks

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