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Thread: no network connection both ethernet and WiFi

  1. #31
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    7,960
    Distro
    Ubuntu Mate 20.04 Focal Fossa

    Re: no network connection both ethernet and WiFi

    Check the differences in both /etc/resolv.conf files. From the "john" computer:
    Code:
    sudo apt-get remove --purge resolvconf
    sudo reboot

  2. #32
    Join Date
    Apr 2007
    Location
    Staunton, Va. USA
    Beans
    519
    Distro
    Ubuntu 20.04 Focal Fossa

    Re: no network connection both ethernet and WiFi

    Code:
    john@Nighthawk:~$ sudo apt-get remove --purge bcmwl-kernel-source 
    [sudo] password for john: 
    Reading package lists... Done 
    Building dependency tree       
    Reading state information... Done 
    E: Unable to locate package bcmwl-kernel-source 
    john@Nighthawk:~$ sudo rm /etc/modprobe.d/blacklist-bcm43.conf 
    rm: cannot remove `/etc/modprobe.d/blacklist-bcm43.conf': No such file or directory 
    john@Nighthawk:~$ sudo modprobe -rf wl 
    FATAL: Module wl not found. 
    john@Nighthawk:~$ sudo modprobe -v ath9k 
    john@Nighthawk:~$ lsmod 
    Module                  Size  Used by 
    rfcomm                 47604  0 
    bnep                   18281  2 
    parport_pc             32866  0 
    bluetooth             180113  10 rfcomm,bnep 
    ppdev                  17113  0 
    snd_hda_codec_realtek   224173  1 
    snd_hda_codec_hdmi     32530  1 
    binfmt_misc            17540  1 
    acer_wmi               28418  0 
    snd_hda_intel          33719  5 
    uvcvideo               72627  0 
    joydev                 17693  0 
    sparse_keymap          13890  1 acer_wmi 
    snd_hda_codec         127706  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel 
    arc4                   12529  2 
    videodev               98259  1 uvcvideo 
    v4l2_compat_ioctl32    17128  1 videodev 
    psmouse                97519  0 
    serio_raw              13211  0 
    k10temp                13166  0 
    i2c_piix4              13301  0 
    snd_hwdep              17764  1 snd_hda_codec 
    snd_pcm                97275  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec 
    snd_seq_midi           13324  0 
    snd_rawmidi            30748  1 snd_seq_midi 
    snd_seq_midi_event     14899  1 snd_seq_midi 
    snd_seq                61929  2 snd_seq_midi,snd_seq_midi_event 
    snd_timer              29990  2 snd_pcm,snd_seq 
    video                  19651  0 
    ath9k                 132428  0 
    radeon                808783  3 
    wmi                    19256  1 acer_wmi 
    mac80211              506862  1 ath9k 
    snd_seq_device         14540  3 snd_seq_midi,snd_rawmidi,snd_seq 
    ath9k_common           14053  1 ath9k 
    ath9k_hw              411239  2 ath9k,ath9k_common
    Using POP!_OS 20.04, which is basically Ubuntu 20.04 with some help from System76.

  3. #33
    Join Date
    Apr 2007
    Location
    Staunton, Va. USA
    Beans
    519
    Distro
    Ubuntu 20.04 Focal Fossa

    Re: no network connection both ethernet and WiFi

    Out of the blue I remembered that the subject hard drive ("Nighthawk") came out of my dead Laptop which uses a Broadcom wifi/ethernet board. When I swapped it with the Hd that came in the 750 Netbook ("Osprey"), the wifi worked (the Hd that came with the 750 netbook the WiFi did not work, but does now). The "Nighthawk" HD WiFi worked upon initial installation and up to my recent operation using Boot-Repair-Disk (USB flash drive). Since that boot repair I have had connection problems.

    I provide the above to help in trouble shooting. The next problem will be when I repair my Laptop and put "Nighthawk" back in it. I will then have to set up broadcom. I will worry about that later.
    Using POP!_OS 20.04, which is basically Ubuntu 20.04 with some help from System76.

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