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Thread: wifi not working

  1. #1
    Join Date
    Nov 2009
    Beans
    54

    wifi not working

    os: xubuntu 12.04 (updated)
    laptop: HP Compaq nc6120

    After install wifi worked just fine, but after a few days wifi hardware has been blocked. Same happened with Ubuntu 12.04. Ethernet works well.

    this wont solve the problem:
    Code:
    sudo rfkill ublock all
    Any idea what to do? Thank you!

    please, see the details here:
    Code:
    csicsi@csicsi-HP:~$ 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 
    
    eth0      no wireless extensions. 
    
    csicsi@csicsi-HP:~$ rfkill list 
    0: hp-wifi: Wireless LAN 
    	Soft blocked: yes 
    	Hard blocked: yes 
    1: phy0: Wireless LAN 
    	Soft blocked: yes 
    	Hard blocked: yes 
    csicsi@csicsi-HP:~$ sudo iwlist ethl scanning 
    ethl      Interface doesn't support scanning.
    Last edited by langmarp; October 15th, 2012 at 12:39 AM.

  2. #2
    Join Date
    Oct 2012
    Beans
    7

    Re: wifi not working

    Have you recently installed any firewall software... like firestarter for example? Firestarter only seems to work with either wifi or ethernet, you have to reconfigure it when you want to switch....... try turning off your firewall(if this is the case) and see if wifi is working then.

    I get the same results with my firewall running, unless i reconfigure it for wifi.

  3. #3
    Join Date
    Nov 2009
    Beans
    54

    Re: wifi not working

    no additional firewall has been installed...
    Last edited by langmarp; October 15th, 2012 at 01:49 AM.

  4. #4
    Join Date
    Mar 2006
    Location
    Williams Lake
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: wifi not working

    A firewall is included by default, when you do a Linux installation. To check if you have it enabled, open a terminal and type the following command:

    Code:
    sudo ufw status
    if the firewall isn't enabled, the output of the above command should look like this:

    Code:
    sudo ufw status
    [sudo] password for cariboo: 
    Status: inactive

  5. #5
    Join Date
    Oct 2012
    Beans
    7

    Re: wifi not working

    I'm guessing you rebooted after doing rfkill unblock?

    It's saying your wifi is hard blocked though, if that's correct, it suggests that it has been physically turned off on your laptop..... does your laptop have a touch panel to let you eneable and disable certain features? If your panel shows your wifi as on, and ubuntu is telling you it's hard blocked.... It might mean there could be some kind of hardware issue.... try toggling it on and off a few times on your laptops panel thingy and see if that does anything?

    Edit: Looking at your laptop, it appears you do have a wifi toggle button(not a touch panel, same thing though), try jamming that button a few times, it may be stuck, or not making good contact or something.
    Last edited by Yrralhann; October 15th, 2012 at 01:30 AM.

  6. #6
    Join Date
    Nov 2009
    Beans
    54

    Question Re: wifi not working

    cariboo907, yes, it is inactive
    Yrralhann, yes, my laptop has a wifi button, but the button has been disabled too, it isn't reactive any more, but this isn't because of a physical damage.

    I am pretty sure, that the issue is caused by a software issue...
    I know, that it sounds weird that the wifi hard block is caused by a software, but I am certain, that this is the case... It worked fine for a while both under Xubuntu and Ubuntu 12.04 before being hard blocked.

    Thanks for both of you!!!
    Last edited by langmarp; October 15th, 2012 at 01:57 AM.

  7. #7
    Join Date
    Oct 2012
    Beans
    7

    Re: wifi not working

    Quote Originally Posted by langmarp View Post

    I am pretty sure, that the issue is caused by a software issue...
    It's possible, but i can reproduce your rfkill list simply by toggling off wifi on my laptop panel

    Wifi switch on
    Code:
    rfkill list
    0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    1: acer-wireless: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    Wifi switch off
    Code:
    rfkill list
    0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: yes
    1: acer-wireless: Wireless LAN
        Soft blocked: yes
        Hard blocked: no
    You mentioned about your wifi button no longer working? That immediatly causes me to suspect that the button may be the problem, or did you mean it was intentionally disabled by disconnecting it from the motherboard or something?

    Are you dualbooting anything else on this system? If so, does your wifi work ok in other OS?
    Last edited by Yrralhann; October 15th, 2012 at 02:12 AM. Reason: futher elaboration

  8. #8
    Join Date
    Oct 2012
    Location
    ireland
    Beans
    28
    Distro
    Kubuntu

    Re: wifi not working

    Had this problem myself on Toshiba NB200, the problem was software, and it took a full year and a have to fix this. I had to install the original OS created by your Computers manufacturer. Because it was a netbook I had no disk drive, I had to buy the usb and reinstall xp and the specific drivers. Then had to make sure the wi-fi was turned on both software and hardware. Then re-installed kUbuntu.

  9. #9
    Join Date
    Nov 2009
    Beans
    54

    Re: wifi not working

    Could I turn on by wifi somehow with rfkill?

    The button has been disabled by the OS, but physically its working fine.

    I just dont get this issue...

    Thanks for your help!

  10. #10
    Join Date
    Oct 2012
    Location
    ireland
    Beans
    28
    Distro
    Kubuntu

    Re: wifi not working

    This is 100% OS software problem so the only solution is to resort back to the original OS with the original Software and Drivers. That seems to be the only way to solve this problem.

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