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Thread: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

  1. #1
    Join Date
    May 2021
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    10

    Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    Hello, I am not an IT guy. I would need help to set up WIFI on Ubantu which I just installed on my old Mac. WIFI is working on other computers at my place on was working on this MAC before. Thank you

    Code:
    lshw -version
    
        -version        print program version ()
    
    format can be
        -html           output hardware tree as HTML
        -xml            output hardware tree as XML
        -json           output hardware tree as a JSON object
        -short          output hardware paths
        -businfo        output bus information
    
    options can be
        -class CLASS    only show a certain class of hardware
        -C CLASS        same as '-class CLASS'
        -c CLASS        same as '-class CLASS'
        -disable TEST   disable a test (like pci, isapnp, cpuid, etc. )
        -enable TEST    enable a test (like pci, isapnp, cpuid, etc. )
        -quiet          don't display status
        -sanitize       sanitize output (remove sensitive information like serial numbers, etc.)
        -numeric        output numeric IDs (for PCI, USB, etc.)
        -notime         exclude volatile attributes (timestamps) from output
    
    root@ubuntu:/home/ubuntu#

  2. #2
    Join Date
    May 2010
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    1,489

    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    what is the output of
    Code:
    sudo lshw -C network; lsb_release -a; uname -a; sudo dmidecode -t 1
    Thanks

  3. #3
    Join Date
    May 2021
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    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    Pleasa see below

    Code:
    buntu@ubuntu:~$ sudo lshw -C network; lsb_release -a; uname -a; sudo dmidecode -t 1
      *-network                 
           description: Network controller
           product: BCM4360 802.11ac Wireless Network Adapter
           vendor: Broadcom Inc. and subsidiaries
           physical id: 0
           bus info: pci@0000:02:00.0
           version: 03
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress bus_master cap_list
           configuration: driver=bcma-pci-bridge latency=0
           resources: irq:18 memory:98600000-98607fff memory:98400000-985fffff
      *-network
           description: Ethernet interface
           product: NetXtreme BCM57766 Gigabit Ethernet PCIe
           vendor: Broadcom Inc. and subsidiaries
           physical id: 0
           bus info: pci@0000:03:00.0
           logical name: enp3s0f0
           version: 01
           serial: ac:87:a3:09:07:2c
           size: 1Gbit/s
           capacity: 1Gbit/s
           width: 64 bits
           clock: 33MHz
           capabilities: pm vpd msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
           configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=5.8.0-43-generic duplex=full firmware=57766a-v1.15 ip=192.168.1.3 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
           resources: irq:19 memory:98700000-9870ffff memory:98710000-9871ffff
    No LSB modules are available.
    Distributor ID:    Ubuntu
    Description:    Ubuntu 20.04.2 LTS
    Release:    20.04
    Codename:    focal
    Linux ubuntu 5.8.0-43-generic #49~20.04.1-Ubuntu SMP Fri Feb 5 09:57:56 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
    # dmidecode 3.2
    Getting SMBIOS data from sysfs.
    SMBIOS 2.4 present.
    
    Wrong DMI structures length: 2753 bytes announced, only 2535 bytes available.
    Handle 0x000D, DMI type 1, 27 bytes
    System Information
        Manufacturer: Apple Inc.
        Product Name: iMac14,1
        Version: 1.0
        Serial Number: C02NM13RF8J2
        UUID: d5d5bf82-e68d-f759-917e-7bc5ea06d9cc
        Wake-up Type: Power Switch
        SKU Number: System SKU#
        Family: iMac
    
    Invalid entry length (0). DMI table is broken! Stop.
    
    ubuntu@ubuntu:~$

  4. #4
    Join Date
    Jun 2010
    Location
    London, England
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    Compare what you get when you run lshw -C network with what I get when I run it

    configuration: driver=bcma-pci-bridge latency=0
    configuration: broadcast=yes driver=rtl8187 driverversion=5.4.0-73-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11
    Because I see "broadcast=yes" & "multicast=yes" I know that my wireless adapter has a driver installed and is working. You do not see anything like that. You are dual booting with Windows 10. Is the WiFi adapter turned off in Windows? If it is then WiFi would not be turned on in Ubuntu. When you ran the Ubuntu Live session are you able to use WiFi?

    Regards

    Regards
    It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
    Ubuntu user #33,200. Linux user #530,530


  5. #5
    Join Date
    May 2008
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    1,740
    Distro
    Ubuntu 20.04 Focal Fossa

    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    Code:
     product: BCM4360 802.11ac Wireless Network Adapter
    Have you had a look at this page with Broadcom info:-

    https://ubuntuforums.org/showthread.php?t=2214110

  6. #6
    Join Date
    May 2021
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    10

    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    Please find my answers to your questions:

    You are dual booting with Windows 10. No, I am doing a dual boot with MAC O/S Catalina

    Is the WiFi adapter turned off in Windows?
    How can I see if the WIFI adapter is turned off ?

    If it is then WiFi would not be turned on in Ubuntu. When you ran the Ubuntu Live session are you able to use WiFi? How can I enter the Ubuntu Live session?

  7. #7
    Join Date
    May 2021
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    10

    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    Code:
    [/untu@ubuntu:~$ lspci -nn -d 14e4:
    02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4360 802.11ac Wireless Network Adapter [14e4:43a0] (rev 03)
    03:00.0 Ethernet controller [0200]: Broadcom Inc. and subsidiaries NetXtreme BCM57766 Gigabit Ethernet PCIe [14e4:1686] (rev 01)
    03:00.1 SD Host controller [0805]: Broadcom Inc. and subsidiaries BCM57765/57785 SDXC/MMC Card Reader [14e4:16bc] (rev 01)
    ubuntu@ubuntu:~$

    I cannot find the release packages

    Code:
    buntu@ubuntu:~$ sudo apt-get update
    Ign:1 cdrom://Ubuntu 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1) focal InRelease
    Hit:2 cdrom://Ubuntu 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1) focal Release
    Get:4 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]  
    Hit:5 http://archive.ubuntu.com/ubuntu focal InRelease                         
    Get:6 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
    Fetched 228 kB in 1s (301 kB/s)    
    Reading package lists... Done
    ubuntu@ubuntu:~$

  8. #8
    Join Date
    May 2008
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    1,740
    Distro
    Ubuntu 20.04 Focal Fossa

    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    [QUOTE=nikkim;14040725]
    Code:
    02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4360 802.11ac Wireless Network Adapter [14e4:43a0] (rev 03)
    From https://ubuntuforums.org/showthread.php?t=2214110, you can find:-
    Code:
    14e4:43a0                  bcmwl-kernel-source
    Open a terminal and enter:-
    Code:
    sudo apt install bcmwl-kernel-source
    Please reboot - any joy?

  9. #9
    Join Date
    May 2021
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    10

    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    Hi, I installed the bcmwl-kernel-source and reebooted the system. Unfortunately, WIFI still does not appear on my network. Do you think it makes a difference, that I have rev.03? Also, I am doing a dual boot, could it be that the information where installed somewhere else other than the bootable drive? Thank you

  10. #10
    Join Date
    May 2008
    Beans
    1,740
    Distro
    Ubuntu 20.04 Focal Fossa

    Re: Ubantu 20.04: WIFI not displayed (Dual boot from USB)

    Quote Originally Posted by nikkim View Post
    WIFI still does not appear on my network. Do you think it makes a difference, that I have rev.03?
    Regrettably, I don't know if rev.03 makes a difference.

    I suggest that you ask the moderators to move the thread to Apple Hardware or Networking & Wireless for further advice.

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