I am a complete noob, i just installed ubuntu and came across "no wifi adapters found". Ive been following other answers on this topic but i keep getting stuck. Not sure how to attach those answers as a reference.

I typed in the terminal

lspci -nn -d 14e4:

And got

Broadcom limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)

And ive been trying to get bcmwl-kernel-source.

I am on ubuntu 18.04 and i manually searched on my usb boot disc and copied and pasted the two files to my home directory?(main page i guess) They are called:




When i open the first file it doesnt list BCM43142 as included in the package and clicking install doesnt seem to do anything. Can somebody prease herp meee

  • Are the files in your home directory or on the desktop? From the terminal: sudo updatedb && locate bcmwl Welcome to Ask Ubuntu. – chili555 Aug 23 '18 at 23:09
  • It says: /home/myusername/desktop/bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb – greycat Aug 23 '18 at 23:39

Please open a terminal and run:

cd ~/Desktop
sudo dpkg -i dkms*.deb
sudo dpkg -i bcmwl*.deb

Please post any errors.

EDIT: Please download build-essential and all its dependencies, marked with red dots, and transfer them to your desktop. https://packages.ubuntu.com/bionic/build-essential Install them as above:

cd ~/Desktop
sudo dpkg -i some_package*.deb

Of course, if you can even temporarily get an internet connection by ethernet or tethering, it is as simple as:

sudo apt update
sudo apt install bcmwl-kernel-source

All the dependencies will be resolved automatically.

EDIT 2: I believe that most, perhaps all, of the packages are on the install DVD. Insert the DVD and run:

sudo apt-cdrom -m -d /media/cdrom add
sudo apt install bcmwl-kernel-source

Post any errors or warnings.

  • dpkg: dependency problems prevent configuration of dkms: dkms depends on gcc; however: package gcc is not installed. dkms depends on dpkg-dev; however: package dpkg-dev is not installed. dkms depends on make |build essential; however: package make is not installed. Package build-essential is not installed. dpkg: error processing package dkms (--install): dependency problems- leaving unconfigured processing triggers for man-db (2.8.3-2)...Errors were encountered while processing: dkms. This is from the first command – greycat Aug 24 '18 at 0:12
  • Please see my edit above in a few moments. – chili555 Aug 24 '18 at 0:14
  • The second command gives a similar answer. Im typing all this through my phone, sorry if this writing structure is hard to read – greycat Aug 24 '18 at 0:15
  • No problems. We needn't see the exact result. – chili555 Aug 24 '18 at 0:21
  • I clicked the link above and im unsure what to click on, could you please tell me how to download it? – greycat Aug 24 '18 at 0:29

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