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Thread: No WiFi settings in the

  1. #1
    Join Date
    Feb 2020
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    42

    No WiFi settings in the

    My problem is a bit similar to the topic below mine, but I don't want to interfere with him/her.

    I recently started an old (March 2021, well) Ubuntu installation on a MacBook. Everything works fine except for the fact that there is no WiFi at all. In the settings under network, WiFi does not even exist. It doesn't show up. Since its a MacBook and I don't have an ethernet adapter, I currently don't have Internet on it in any way.

    I ran some commands to see what happened.
    Code:
    sudo systemctl restart network-manager
    does not do anything.

    The output of the following command shows the existence of a WiFi card.
    Code:
    lspci -nnk | grep -iA3 net; lsusb; dmesg | egrep -i 'blue|firm'
    Sorry, I can only show it to you as a photo since I cannot send it anywhere:
    photo_2021-06-21_19-42-39.jpg

    Code:
    sudo up link show
    tells me that there only is the loopback device.

    Is there anything I can do to solve that without actually having Internet? It seems very weird to me, honestly.

  2. #2
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,582
    Distro
    Ubuntu Development Release

    Re: No WiFi settings in the

    Please open a terminal and do:

    Code:
    sudo modprobe -r wl
    sudo dmesg | grep brcm
    Post the result and I suspect we'll be very close to a solution.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  3. #3
    Join Date
    Feb 2020
    Beans
    42

    Re: No WiFi settings in the

    The first outputs: "FATAL: Module wl not found" and the second one outputs nothing

    Thank you for your answer.

  4. #4
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,582
    Distro
    Ubuntu Development Release

    Re: No WiFi settings in the

    Quote Originally Posted by dorpapst View Post
    The first outputs: "FATAL: Module wl not found" and the second one outputs nothing

    Thank you for your answer.
    Verrry interesting! Please run and post:

    Code:
    sudo modprobe brcmfmac
    sudo dmesg | grep -e brcm -e 03:00
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  5. #5
    Join Date
    Feb 2020
    Beans
    42

    Re: No WiFi settings in the

    The first one is empty (it’s supposed to be the case?) and the second one full of outputs, see the attachment. Thank you DB80224C-871D-4AF3-B57C-B21BFAC0EAEA.jpg

    I hope it’s readable

  6. #6
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,582
    Distro
    Ubuntu Development Release

    Re: No WiFi settings in the

    Please download this file on another computer and transfer it with a USB key or similar to the desktop of your Ubuntu macine: https://gist.githubusercontent.com/c...43602-pcie.txt

    Now move it to the correct location:

    Code:
    sudo cp ~/Desktop/brcmfmac43602-pcie.txt  /usr/lib/firmware/brcm/
    Reboot and again show us:

    Code:
    sudo dmesg | grep brcm
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  7. #7
    Join Date
    Feb 2020
    Beans
    42

    Re: No WiFi settings in the

    Hey chili555
    Sorry for the late response.
    I actually found out that running the
    sudo modprobe brcmfmac
    command last time solved the problem. I wasn't aware of it since I was not expecting it to be solved by that.

    Thank you so much for your answer!
    Lukas

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