Wifi issue lubuntu

Solved
hugos66 Posted messages 3 Status Member -  
mamiemando Posted messages 33228 Registration date   Status Moderator Last intervention   -
Hello,
I just installed Lubuntu on my Lenovo Flex 2 14D, but I can't activate/install the drivers for my Wi-Fi card and connect to my Wi-Fi box.
I've tried a lot of different things this afternoon and nothing seems to work.
I'm new to the Linux world and I'm really struggling a lot, but I need to get my only PC working again, and I must admit that having Wi-Fi would help me a lot.
I still have internet access thanks to my phone, but that's all.

Sorry for the quality:
https://drive.google.com/file/d/0ByAQcqveNdspVzNqQUdnaFdjdld0MDZ6bGVNTTNsaWU1cy1N/view?usp=sharing

I still see this in my settings, but the card is not activated..

Thank you in advance for your help and good night!

Configuration: Linux / Firefox 60.0

3 answers

mamiemando Posted messages 33228 Registration date   Status Moderator Last intervention   7 940
 
Hello,

Could you report the exact model of your card by typing in a terminal the following commands (copy-paste the result):

lspci | grep -i wireless
dpkg -l | grep broadcom
/sbin/iwconfig


Also, let us know if the following command detects Wi-Fi access points, particularly yours:

/sbin/iwlist scan


In the meantime, you can take a look at the documentation.

Good luck!
2
hugos66 Posted messages 3 Status Member
 
Hello and thank you for your reply!
I executed each command line by line, is that what I should do? Because the first two did not show anything in my terminal.

hs66@hs66-Lenovo-Flex-2-14D:~$ /sbin/iwconfig
enp0s18u1u4 no wireless extensions.

lo no wireless extensions.

enp1s0 no wireless extensions.


And then:

hs66@hs66-Lenovo-Flex-2-14D:~$ /sbin/iwlist scan
enp0s18u1u4 Interface doesn't support scanning.

lo Interface doesn't support scanning.

enp1s0 Interface doesn't support scanning.



If I understood correctly, it doesn't even see my Wi-Fi card... not great!

Thank you again for your help, honestly it's way too big of a challenge for me on my own!
0
hugos66 Posted messages 3 Status Member
 
After a day of trying everything, I just found the solution (very, very, very simple...)
I'm posting it for anyone who might be in the same predicament as me.
In fact, since a certain update, there's a bug between Broadcom Wi-Fi cards and Linux.

To solve the problem, you just need to go into the BIOS to disable Secure Boot (I'm not sure if this operation can be done directly in the system, but I think it can).

To enter the BIOS, you usually have to press a specific function key (F1, F2, F3...) at the very beginning of the computer's startup (before the system even loads).

Then, in the security tab most of the time, you just have to disable Secure Boot (disabled). I don't exactly know what Secure Boot is, but you can still keep the BIOS password if you have one, so I don't think the computer is less secure, in terms of theft for example.

Happy browsing on Linux everyone and good luck!
0
zipe31 Posted messages 34620 Registration date   Status Contributor Last intervention   6 501
 
Hello,

Thank you for the reply.
0
mamiemando Posted messages 33228 Registration date   Status Moderator Last intervention   7 940
 
Thank you for the feedback, but I must admit that the connection between secure boot and the Wi-Fi card surprises me...
0
Tchae
 
Hello,

I just spent 48 hours trying to install Lubuntu on my Acer Aspire E11 with Broadcom 43142
Just about to give up, I finally came across this thread.
I confirm that I disabled secure boot in the BIOS (F2 at startup) and...
... Miracle, Wi-Fi networks appeared and Wi-Fi connection established.

Thank you, thank you, thank you!
0
GillesBruel25
 
I don't know how to disable secure boot.
0
mamiemando Posted messages 33228 Registration date   Status Moderator Last intervention   7 940
 
@GilleBruel25: a little Google/YouTube search will help you achieve this, but in essence, you have a key (delete, f2, f10... it depends on the motherboard) that allows you to enter the "bios" and disable secure boot.

Good luck
0