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I recently installed Ubuntu 18.04 on my Acer v5, initially alongside windows 10. After installing I had no wifi connection. Doing some research on the net for some answers I read a couple of times that I should disable secure boot. I entered the bios and tried to disable it but I could not select that option. It was jumping right from boot mode to change boot order. Instead I changed the boot mode from uefi to legacy boot, thinking that I could change it back if it was not working. When I restarted my laptop it was showing operating system not found but since then I can not enter the bios anymore to change it back to uefi mode. If I press F2 nothing happens.

According to my engineering boyfriend windows could not be saved anymore so I decided to install ubuntu 18.04 in legacy boot instead but it did not fix the network problem. It can still not find the network adapter. We tried a couple of suggestions we found on the internet but nothing is working. It seems that all the necessary packeges did not came with the version of Ubuntu that I downloaded (from the official website) and installed. I can not plug in a cable as I have no port for that so I can not do any updates or install other stuff. The only thing I can do is download it on another computer and put it on a usb stick. We tried to look for the right driver but could not find one for ubuntu and have not been able to install it. This should be the driver version for windows v6.30.223.170 Broadcom

I hope someone can help me fix this problem.1

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Pilot6
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madeleinn
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  • Please [edit] your question and add output of lspci -knn | grep Net -A3; rfkill list terminal command. – Pilot6 Jun 08 '18 at 12:27
  • Related: https://askubuntu.com/questions/626642/how-to-install-broadcom-wireless-drivers-offline/626653#626653 – Pilot6 Jun 08 '18 at 12:28
  • I followed the instructions in the link you profided but after i put the two files in my home directory it says permission denied. When i enter the commend sudo dpkg -i *.deb it says no such file or directory. – madeleinn Jun 08 '18 at 15:33
  • Probably you copied the files to a wrong place. Home directory is not /home. It is your "Home Folder" or whatever it is called. The default folder that is opened in your file manager. – Pilot6 Jun 08 '18 at 15:37
  • Possible duplicate of How to install Broadcom wireless drivers offline? – Pilot6 Jun 08 '18 at 15:53
  • You have really a Broadcom device that needs the bcmwl-kernel-source driver. – Pilot6 Jun 08 '18 at 15:54
  • I don't understand what command are you trying to run. Copy the files using your mouse by drag & drop. Then run a simple command sudo dpkg -i *.deb. – Pilot6 Jun 08 '18 at 15:57
  • I added a second pickture with the outcome of the above commend – madeleinn Jun 08 '18 at 16:07
  • Now you did all correctly. But the problem is that in Ubuntu 18.04 gcc is not installed by default. This is a real problem and a shame on the developers. If you install the 16.04 release, it will work this way. You will be able to upgrade to 18.04. Manually downloading all build-essential is very difficult for a newbie. – Pilot6 Jun 08 '18 at 16:08
  • I already thought of a similer solution. I will do that. Thanks – madeleinn Jun 08 '18 at 16:10
  • This is actually a 18.04 serious bug. probably they tried to make the installation file smaller. – Pilot6 Jun 08 '18 at 16:13
  • You can download the packages that are missing the same way from the pool directory of the installation media. – Pilot6 Jun 08 '18 at 17:36

1 Answers1

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That is a real problem without an Ethernet connection.

gcc, build-essential, etc. are not installed by default in bionic. This makes it very difficult to install a dkms package, or build anything from source without any network connection.

It is possible to download and install many packages manually, but it really a hard work for an ordinary user.

I suggest installing the 16.04 release. It is possible to upgrade it to 18.04 later.

Also I consider it a serious bug, that should be reported to the developers.

I asked this question. I hope someone will find a better solution.

I looked into the 18.04 LiveUSB and found that it seems that the required dependencies are included to pool. It is possible to download them manually the same way as dkms and bcmwl-kernel-source.

Pilot6
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  • Fixed it :D. I ended up dumping all the packages from the pool folder in my home folder and than ran the comment sudo dpkg -i *.deb. Maybe not the cleanest way but it worked for me. I am now writing my command from my Ubuntu desktop using wifi :) – madeleinn Jun 12 '18 at 12:24
  • P.s my boyfriend has been working on it all evening trying out different codes and solutions so I don' t know to what extant he laid the groundwork for this method to work. – madeleinn Jun 12 '18 at 12:27
  • That is a good comment. It looks like all dependencies are there. – Pilot6 Jun 12 '18 at 12:34