No wireless connection on HP Pavilion Linux Mint

[jacklevics]

Hi.
I've installed Mint on my laptop and I am completely unable to get the wifi to work. I am plugged in by ethernet now.

I ran iwconfig and it shows this.

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eno1      no wireless extensions.

lo        no wireless extensions.

And also,

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lspci -nnk | grep -iA2 net
08:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n [14e4:4365] (rev 01)
	Subsystem: Hewlett-Packard Company BCM43142 802.11b/g/n [103c:2230]
09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:8136] (rev 08)
	Subsystem: Hewlett-Packard Company RTL810xE PCI Express Fast Ethernet controller [103c:227f]
	Kernel driver in use: r8169
	Kernel modules: r8169

Could anybody offer any help on this?
I see it's not just me that's had problems with the Broadcom controller.

Thank you.

[JeremyB]

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wget http://mirrors.kernel.org/ubuntu/pool/restricted/b/bcmwl/bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb
sudo dpkg -i bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb

Then check Secure Boot status

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sudo apt install mokutil && mokutil --sb-state

If it says Secure Boot disabled or EFI variables unsupported on this system, reboot. If it says Secure Boot enabled, reboot and go into UEFI/BIOS settings and disable Secure Boot

[jacklevics]

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wget http://mirrors.kernel.org/ubuntu/pool/restricted/b/bcmwl/bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb
sudo dpkg -i bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb

Then check Secure Boot status

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sudo apt install mokutil && mokutil --sb-state

If it says Secure Boot disabled or EFI variables unsupported on this system, reboot. If it says Secure Boot enabled, reboot and go into UEFI/BIOS settings and disable Secure Boot

Thanks for that help, Jeremy. It did indeed say I had secureboot enabled, and so I went into the BIOS and disabled it.

Unfortunately, I still can't get WIFI. It is not searching for them.
Is there perhaps something else I can do?

Thanks,
Jack

[JeremyB]

See the wireless script link in my signature and post the URL in terminal after the second command is run

[jacklevics]

See the wireless script link in my signature and post the URL in terminal after the second command is run

Thanks, JeremyB. I did this and it exported a wireless info file to desktop.
The URL shows: http://termbin.com/flgl

Thank you.

[JeremyB]

In terminal try

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sudo apt update && sudo apt install bcmwl-kernel-source

Reboot

[jacklevics]

Okay. This is what happened and what it asked. I shall now try rebooting.

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sudo apt update && sudo apt install bcmwl-kernel-source
[sudo] password for daddy: 
Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]      
Ign:3 http://dl.google.com/linux/chrome/deb stable InRelease                   
Hit:4 http://dl.google.com/linux/chrome/deb stable Release                     
Get:5 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]    
Hit:6 http://archive.canonical.com/ubuntu bionic InRelease                     
Get:7 http://security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB]
Ign:8 http://packages.linuxmint.com tara InRelease                             
Hit:10 http://packages.linuxmint.com tara Release                              
Fetched 247 kB in 1s (333 kB/s)                                                
Reading package lists... Done
Building dependency tree       
Reading state information... Done
1 package can be upgraded. Run 'apt list --upgradable' to see it.
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem. 
daddy@daddy-HP-Pavilion-17-Notebook-PC:~$ apt list --upgradable
Listing... Done
mintwelcome/tara,tara 2.3.3 all [upgradable from: 2.3.2]
N: There is 1 additional version. Please use the '-a' switch to see it
daddy@daddy-HP-Pavilion-17-Notebook-PC:~$ sudo dpkg --configure -a
Setting up bcmwl-kernel-source (6.30.223.271+bdcom-0ubuntu4) ...
Removing old bcmwl-6.30.223.271+bdcom DKMS files...

-------- Uninstall Beginning --------
Module:  bcmwl
Version: 6.30.223.271+bdcom
Kernel:  4.15.0-29-generic (x86_64)
-------------------------------------

Status: This module version was INACTIVE for this kernel.
depmod........

DKMS: uninstall completed.

------------------------------
Deleting module version: 6.30.223.271+bdcom
completely from the DKMS tree.
------------------------------
Done.
Loading new bcmwl-6.30.223.271+bdcom DKMS files...
Building for 4.15.0-29-generic
Building for architecture x86_64
Building initial module for 4.15.0-29-generic
Secure Boot not enabled on this system.
Done.

wl:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/4.15.0-29-generic/updates/

depmod...

DKMS: install completed.
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools (0.130ubuntu3.1) ...
update-initramfs: Generating /boot/initrd.img-4.15.0-29-generic

[jacklevics]

Thank you, JeremyB. Incredible help! It has just started working! Fantastic.

Many thanks,
Jack