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Thread: WIFI: Adapter 3945abg on 12.10

  1. #31
    Join Date
    Mar 2013
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    22

    Re: WIFI: Adapter 3945abg on 12.10

    Quote Originally Posted by chili555 View Post
    Now we see wlan0 as UP in ifconfig. Did the rfkill command solve the soft-blocked issue?
    Code:
    sudo rfkill unblock all
    rfkill list all
    If so, now it should scan:
    Code:
    sudo iwlist wlan0 scan
    ...
    yes. It finally scanned and found my router. How can I put in the password?

  2. #32
    Join Date
    Aug 2005
    Location
    South Carolina, USA
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    19,877
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: WIFI: Adapter 3945abg on 12.10

    yes. It finally scanned and found my router.
    Awesome! There are two options. If this is a stay-at-home computer and you just need to connect to your home router, I'd fill in /etc/network/interfaces with your details; something like:
    Code:
    auto lo
    iface lo inet loopback
    
    auto wlan0
    iface wlan0 inet dhcp
    wpa-ssid <your_router>
    wpa-psk <your_key>
    Then restart the interface to get it to read the file and use the details:
    Code:
    sudo ifdown wlan0 && sudo ifup wlan0
    Be sure you connected and got an IP address:
    Code:
    ifconfig
    And that you can reach ye olde interwebs:
    Code:
    ping -c3 www.google.com
    Of course, substitute your details here.

    On the other hand, if you take your computer to the coffee shop, library, etc., I'd probably re-install Network Manager.

    EDIT: As always, if you need specific guidance, please feel free to ask us. Wild Man and I will be very happy to help.
    Last edited by chili555; March 30th, 2013 at 06:46 PM.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #33
    Join Date
    Mar 2013
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    22

    Re: WIFI: Adapter 3945abg on 12.10

    Thank you very much. You guys are a great help. I think I will try to reinstall the network manager. I'll let you know when I need further assistance. Probably very soon...

  4. #34
    Join Date
    Mar 2013
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    22

    Re: WIFI: Adapter 3945abg on 12.10

    I haven't had time to do anything in the meantime, but when I came back and started my machine again the wlan scan wasn't possible anymore:

    sudo iwlist wlan0 scan

    resulted in:
    wlan0 Interface doesn't support scanning : Network is down


    In order to come back to the point where I can detect my router I had to repeat the command:

    sudo ifconfig wlan0 up


    Is there a way to to keep it up even after rebooting the system?
    I guess it doesn't make sense to reinstall network manager at this stage. Right?

  5. #35
    Join Date
    Feb 2008
    Location
    Texas
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    14,626
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: WIFI: Adapter 3945abg on 12.10

    That is because network manager is not insatlled, run this command with a wired connection:
    Code:
    sudo apt-get install --reinstall network-manager network-manager-gnome
    Thanks

  6. #36
    Join Date
    Aug 2005
    Location
    South Carolina, USA
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    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: WIFI: Adapter 3945abg on 12.10

    In fact, a big part of the purpose of NM is to bring up and manage your interface.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  7. #37
    Join Date
    Mar 2013
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    22

    Re: WIFI: Adapter 3945abg on 12.10

    Quote Originally Posted by Wild Man View Post
    That is because network manager is not insatlled, run this command with a wired connection:
    Code:
    sudo apt-get install --reinstall network-manager network-manager-gnome
    Thanks
    My router is a pure Wifi device, no wired connection. I think I have to download the necessary packages with my other machine and install it. I browsed the network manager packages at packages.ubuntu.com but I'm not sure which are the right ones.

  8. #38
    Join Date
    Mar 2013
    Beans
    22

    Re: WIFI: Adapter 3945abg on 12.10

    Now I'm completely pissed off. Every f... little step results in a sound internet search. I think I found the deb file I need but the Ubuntu Software Center doesn't allow me to click install. Such a mess! What's the command to get it run. Otherwise please let me know how to deinstall the mess!

  9. #39
    Join Date
    Aug 2005
    Location
    South Carolina, USA
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    19,877
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: WIFI: Adapter 3945abg on 12.10

    Assuming the package is on your desktop, then:
    Code:
    cd Desktop
    sudo dpkg -i network*.deb
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  10. #40
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    14,626
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: WIFI: Adapter 3945abg on 12.10

    These are the packages you need.
    Code:
    network-manager network-manager-gnome
    Thanks

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