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Thread: Kernel panic after messing with Wifi card

  1. #1
    Join Date
    Jul 2014
    Beans
    14

    Kernel panic after messing with Wifi card

    So I have a rtl8723be wifi card which did work after updating to 3.13.0_32. But the connection drops now and then as also explained in this bug report:

    https://bugs.launchpad.net/ubuntu/+s...x/+bug/1320070

    From there I tried the solution in #29
    I have tried the following on several kernels (under 12.04 and 14.04) and so far it has worked well :sudo apt-get install linux-headers-generic build-essential git
    # needed only if you don't have yet that package
    git clone http://github.com/lwfinger/rtl8723be
    # needed only if you don't have yet downloaded rtl8723be

    cd rtl8723be
    git checkout 604aa9058fb9e5bb1cf571c99989d081f8fc8b9
    make clean
    make

    sudo make install
    sudo modprobe rtl8723be
    echo "options rtl8723be fwlps=0" | sudo tee /etc/modprobe.d/rtl8723be.conf


    And after rebooting I ran into the Kernel panic #30 warned me for... so I can't boot normally now...

    I did find out I had the option to boot in 3.13.0_24 so I tried that and it works. Doesn't even seem to detect a wireless card.

    My question is:how do I fix my system? Can I somehow repair the damage I did? Or can I update this 3.13.0_24 somehow and pretend nothing happened? Or should I just reïnstall the whole OS and everything (it's not much yet)?

    Edit: Here is some more info. I'm very new to Ubuntu/Linux. I'm using Ubuntu 14.04. And in the picures below you can see the messages I get when booting normally now:

    20140730_120258[1].jpg20140730_120247[1].jpg

    Just in case the one line between the 2 pictures is important: it says "handle_irq_event +0x3d/0x60" .
    Last edited by jonasb2; July 30th, 2014 at 11:18 AM.

  2. #2
    Join Date
    Jul 2014
    Beans
    14

    Re: Kernel panic after messing with Wifi card

    Is nobody able to help me? Anythin more you need to know, or is my explanation confusing maybe?

  3. #3
    Join Date
    May 2006
    Beans
    Hidden!
    Distro
    Kubuntu

    Re: Kernel panic after messing with Wifi card

    please try removing the wifi card from the system
    then boot the system with the wifi card removed

    this should clear the system

    close the system down again then install the wifi card
    the system 'should' pick the card up and re-install as a new card ...

    it worked on my system when i had wifi problems ...
    Hope this helps . . . Steve ...
    Nothing travels faster than the speed of light, except bad news ...
    Shuttle XS35 - Intel Atom 1.6 - 4GB Ram - 500GB HDD - Linux Kubuntu

  4. #4
    Join Date
    Jul 2014
    Beans
    14

    Re: Kernel panic after messing with Wifi card

    It's a laptop, I can't exactly remove the wifi card I'm afraid...

  5. #5
    Join Date
    Jan 2009
    Location
    Santander, Spain
    Beans
    1,981
    Distro
    Xubuntu 18.04 Bionic Beaver

    Re: Kernel panic after messing with Wifi card

    Perhaps your question would get a quicker answer if posted in the networking & wireless support subforum.

    You can ask a moderator to move the post to the forementioned subforum.

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