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Thread: wireless failure on upgrade to 12.04

  1. #1
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    Jan 2011
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    wireless failure on upgrade to 12.04

    I have a sad little old laptop:

    http://www.immortalsgate.com/dkauk/L..._Pro_V2000.htm

    The internal wireless was not working very well for me (insensitive, kept dropping connections),
    so I bought a TP-LINK TL-WNN722N (wireless USB adapter) and plugged it in. I was running Ubuntu 11.04 at
    the time. It connected immediately, and my only problem was finding
    out how to permanently turn off the internal wireless. Easy.

    I have now "upgraded" to Lubuntu 12.04, and simply cannot make wireless operate.

    I will attempt to anticipate some requests for information:

    uname -a
    Linux bugbear-fs 3.2.0-39-generic #62-Ubuntu SMP Wed Feb 27 22:05:17 UTC 2013 i686 i686 i386 GNU/Linux

    sudo lsusb
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 001 Device 002: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n
    Bus 003 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse

    rfkill list all
    0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: yes

    BugBear

  2. #2
    Join Date
    Feb 2008
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    16,743
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    Ubuntu Mate 16.04 Xenial Xerus

    Re: wireless failure on upgrade to 12.04

    It says hard blocked that usually means the wireless switch is off.
    Thanks

  3. #3
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    Re: wireless failure on upgrade to 12.04

    Quote Originally Posted by Wild Man View Post
    It says hard blocked that usually means the wireless switch is off.
    Thanks
    Yes, but that's the internal wireless. I actually want that one to be turned off, and want my USB/wireless adapter to ... do something!

    Further, my laptop doesn't even have a switch - under 11.04 I had a fair bit of research to find the
    code to turn the internal wireless off.

    After some more flaiing around I have arrived at this (I've been rebooting and mod-probing
    after googling)

    Code:
     rfkill list all
    0: phy0: Wireless LAN
            Soft blocked: no
            Hard blocked: yes
    2: phy4: Wireless LAN
            Soft blocked: no
            Hard blocked: no
    
     sudo iwconfig
    lo        no wireless extensions.
    
    eth1      IEEE 802.11bg  ESSID:off/any  
              Mode:Managed  Channel:0  Access Point: Not-Associated   
              Bit Rate:0 kb/s   Tx-Power=off   Sensitivity=8/0  
              Retry limit:7   RTS thr:off   Fragment thr:off
              Encryption key:off
              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
    
    wlan0     IEEE 802.11bgn  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Encryption key:off
              Power Management:off
              
    eth0      no wireless extensions.
    Despite this, the network manager thing in the task bar shows BOTH wireless
    interfaces as disabled by hardware switch.

    BugBear
    Last edited by bugbear6502; April 4th, 2013 at 04:49 PM.

  4. #4
    Join Date
    Feb 2008
    Location
    Texas
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    16,743
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    Ubuntu Mate 16.04 Xenial Xerus

    Re: wireless failure on upgrade to 12.04

    Hi, copy and paste this command in the terminal (ctrl+alt+t) please:
    Code:
    wget -N -t 5 -T 10 http://dl.dropbox.com/u/57264241/wireless_script && chmod +x wireless_script && ./wireless_script
    It will download a script and create a text file in your home folder with wireless information so we can see the condition of your wireless at this time and the Mac address, WPA key and WEP key are removed for your security, then reply back, click on the paper clip and attach the netinfo.txt file.

    I believe as long as that says blocked your usb adaptor will not work either but it may depend on the device.
    Thanks

  5. #5
    Join Date
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    93

    Re: wireless failure on upgrade to 12.04

    netinfo.txt

    Done (I hope!)

    BugBear

  6. #6
    Join Date
    Feb 2008
    Location
    Texas
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    Ubuntu Mate 16.04 Xenial Xerus

    Re: wireless failure on upgrade to 12.04

    Why do you have an eth1 connection?

    Remove all of your wireless connections then reboot and see if network manager finds your wireless connection.
    Thanks

  7. #7
    Join Date
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    93

    Re: wireless failure on upgrade to 12.04

    Quote Originally Posted by Wild Man View Post
    Why do you have an eth1 connection?
    Because I#m far from clear how to arrange NOT to have one.

    Remove all of your wireless connections then reboot and see if network manager finds your wireless connection.
    Thanks
    I have rebooted WITH the TL link plugged into the USB. It was not found on boot up.

    I attach the results of re-running the "wireless_script"

    Assuming I'm ignorant will serve you well

    BugBearnetinfo.txt

  8. #8
    Join Date
    Jan 2011
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    93

    Re: wireless failure on upgrade to 12.04

    There's some kind of horrible cross-coupling going on.

    Acting "on a hunch", I used my old knowledge to enable the built in (crappy) wireless

    sudo modprobe fsam7400 radio=1

    Since I'm currently testing in the work office (near the router) this worked fine, and I could see various routers.

    I then unplugged and re-plugged the USB wireless adapter.

    It worked, and showed in the network manager.

    So it appears that somehow the DISABLED status of the builtin-wireless is
    affecting the USB one.

    BugBear

  9. #9
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    16,743
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    Re: wireless failure on upgrade to 12.04

    Yes that is what I thought, you have to have he wireless button on for the usb adaptor to be able to work.
    I believe if you have the usb plugged in at boot it will over ride the internal and be the one used.
    Thanks

  10. #10
    Join Date
    Jan 2011
    Beans
    93

    Re: wireless failure on upgrade to 12.04

    Dear $DEITY this is a common question;

    I googled site:ubuntuforums.org internal wireless external disable

    and found an amazing variety of answers, all different.

    BugBear

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