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Thread: Help! My wireless is gone!

  1. #1
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    Help! My wireless is gone!

    When I run ifconfig, wlan0 still shows up, but it has no IP address. The (gnome) panel ethernet icon is there, but the wireless icon is gone.

    lshw shows:
    Code:
       *-network
            description: Wireless interface
            product: PRO/Wireless 4965 AG or AGN Network Connection
            vendor: Intel Corporation
            physical id: 0
            bus info: pci@0000:02:00.0
            logical name: wmaster0
            version: 61
            width: 64 bits
            clock: 33MHz
            capabilities: bus_master cap_list logical ethernet physical wireless
            configuration: broadcast=yes driver=iwl4965 latency=0 module=iwl4965 multicast=yes wireless=IEEE 802.11g
    After running
    Code:
    donny@Maui:~$ sudo iwconfig wlan0 essid MaunaLoa commit
    Error for wireless request "Commit changes" (8B00) :
        SET failed on device wlan0 ; Operation not supported.
    Then running iwconfig again, I get
    Code:
    wlan0     IEEE 802.11g  ESSID:"MaunaLoa"  Nickname:""
              Mode:Managed  Frequency:2.462 GHz  Access Point: <snip>   
              Tx-Power=27 dBm   
              Retry min limit:7   RTS thr:off   Fragment thr=2346 B   
              Power Management:off
              Link Quality:0  Signal level:0  Noise level:0
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:0  Invalid misc:0   Missed beacon:0
    But still no wireless icon in the panel (and no net connectivity).

    I should add that everything was working fine until I tried to set up a VirtualBox (Windows) VM and it had no connectivity. I mucked around like a stupid blind noob trying this and that which I found via this forum and Google. I never did get that to work, and now I've totally broken my wireless.

    Please, please help.
    r e l a x . . . 8)

  2. #2
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    Re: Help! My wireless is gone!

    The (gnome) panel ethernet icon is there, but the wireless icon is gone.
    Network Manager is designed to prefer the wired ethernet connection to wireless. I can only assume that you are seeing the ethernet symbol because it's connected! If you disconnect the ethernet cable and wait a few moments for NM to recognize a change of state, does the wireless symbol re-appear?
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #3
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    Re: Help! My wireless is gone!

    Quote Originally Posted by chili555 View Post
    Network Manager is designed to prefer the wired ethernet connection to wireless. I can only assume that you are seeing the ethernet symbol because it's connected! If you disconnect the ethernet cable and wait a few moments for NM to recognize a change of state, does the wireless symbol re-appear?
    No. The wireless icon was gone long before I plugged in an Ethernet cable. (I only did so because I'd lost my wireless capabilities.)
    Last edited by Donny Bahama; March 7th, 2010 at 06:29 PM.
    r e l a x . . . 8)

  4. #4
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    Re: Help! My wireless is gone!

    I'm having a very similar problem. I have posted in this thread

  5. #5
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    Re: Help! My wireless is gone!

    Can you right-click in the notification area of your panel and add it back? If you don't see it to add, simply add a notification area and then add it.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  6. #6
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    Re: Help! My wireless is gone!

    Quote Originally Posted by chili555 View Post
    Can you right-click in the notification area of your panel and add it back? If you don't see it to add, simply add a notification area and then add it.
    I think the problem is bigger than that. I do have a notification area already, and I do have nm-applet added to the panel. But nm-applet won't ever show the wireless icon (even when I disconnect the ethernet cable), nor will it allow me to connect to any WAPs.
    Attached Images Attached Images
    r e l a x . . . 8)

  7. #7
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    Re: Help! My wireless is gone!

    In iwconfig, do you still have wlan0? What does this tell us?
    Code:
    sudo iwlist wlan0 scan
    cat /etc/network/interfaces
    Thanks.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  8. #8
    Join Date
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    Re: Help! My wireless is gone!

    Quote Originally Posted by chili555 View Post
    In iwconfig, do you still have wlan0? What does this tell us?
    Code:
    sudo iwlist wlan0 scan
    cat /etc/network/interfaces
    Thanks.
    Yes, I do still have wlan0.
    Code:
    donny@Maui:~$ sudo iwlist wlan0 scan
    [sudo] password for donny: 
    wlan0     Scan completed :
              Cell 05 - Address: 00:11:22:33:44:55    <- changed for security reasons
                        ESSID:"MaunaLoa"
                        Mode:Master
                        Channel:6
                        Frequency:2.437 GHz (Channel 6)
                        Quality=90/100  Signal level=-42 dBm  Noise level=-127 dBm
                        Encryption key:on
                        IE: WPA Version 1
                            Group Cipher : TKIP
                            Pairwise Ciphers (1) : TKIP
                            Authentication Suites (1) : PSK
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                                  24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                                  12 Mb/s; 48 Mb/s
                        Extra:tsf=000000640ead4144
    Other cells were found as well, but I deleted them from the listing. MaunaLoa is my AP/wireless router.
    Code:
    donny@Maui:~$ cat /etc/network/interfaces
    auto wlan0
    iface wlan0 inet manual
    
    auto br0
    iface br0 inet dhcp
       bridge_ports wlan0 vbox0
    
    # The loopback network interface
    auto lo
    iface lo inet loopback
    Thanks so much for your help!
    Last edited by Donny Bahama; March 7th, 2010 at 09:25 PM.
    r e l a x . . . 8)

  9. #9
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    Re: Help! My wireless is gone!

    Network Manager will not manage any interfaces in interfaces. Please do:
    Code:
    sudo gedit /etc/network/interfaces
    Comment out wlan0:
    Code:
    #auto wlan0
    #iface wlan0 inet manual
    
    auto br0
    iface br0 inet dhcp
       bridge_ports wlan0 vbox0
    
    # The loopback network interface
    auto lo
    iface lo inet loopback
    Proofread, save and close gedit. Upon reboot, you should see your very healthy wireless in Network Manager.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  10. #10
    Join Date
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    Re: Help! My wireless is gone!

    Quote Originally Posted by chili555 View Post
    Network Manager will not manage any interfaces in interfaces. Please do:
    Code:
    sudo gedit /etc/network/interfaces
    Comment out wlan0:
    Code:
    #auto wlan0
    #iface wlan0 inet manual
    
    auto br0
    iface br0 inet dhcp
       bridge_ports wlan0 vbox0
    
    # The loopback network interface
    auto lo
    iface lo inet loopback
    Proofread, save and close gedit. Upon reboot, you should see your very healthy wireless in Network Manager.
    Wow! THANK YOU!!!

    I commented out those two lines, saved the file, then tried:
    Code:
    donny@Maui:~$ sudo /etc/init.d/networking restart
     * Reconfiguring network interfaces...                      
          Ignoring unknown interface wlan0=wlan0.
    Obviously that didn't work. I'm guessing the restart was mandatory. If so, it will have to wait until I figure this out (or until my rsync completes - whichever comes first.)
    r e l a x . . . 8)

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