Wireless connection is lost

[jamesowens]

My wireless has been working ok for one year and has now stopped and I have to go hard wire, how do I go about fault finding the problem?

[jamesowens]

I should have added my system is linux mint 81.2 and my Wifi is working ok to my smart phone.

[vladtepes]

I'm also on 18.2 and having exactly the same issue. Was working last time. Moved computer about 12 feet, not working but the phone gets wifi there easily too.

Anyone please?

[uncle_robie]

Hello, I have also lost my wifi. I am using Mint 18.3 and yesterday when I booted my laptop (Dell Latitude E6400), I received a dialog box which read, ' Cinnamon has crashed you are now in Fallback mode." I found some help in the forum and I have my desktop back, but still no wifi. There are no wireless options given in the Network Manager.
I searched around the forum and found some advice, entered some code into Terminal and got this:

robert@robert-pc ~ $ wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireles ... eless-info && chmod +x wireless-info && ./wireless-info
--2018-07-24 07:24:01-- https://github.com/UbuntuForums/wireles ... eless-info
Resolving github.com (github.com)... 192.30.253.113, 192.30.253.112
Connecting to github.com (github.com)|192.30.253.113|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://raw.githubusercontent.com/Ubunt ... eless-info [following]
--2018-07-24 07:24:01-- https://raw.githubusercontent.com/Ubunt ... eless-info
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.20.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.20.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 17021 (17K) [text/plain]
Saving to: ‘wireless-info’

wireless-info 100%[===================>] 16.62K --.-KB/s in 0.01s

Last-modified header missing -- time-stamps turned off.
2018-07-24 07:24:01 (1.41 MB/s) - ‘wireless-info’ saved [17021/17021]

[sudo] password for robert:

Results saved in "/home/robert/wireless-info.txt".

robert@robert-pc ~ $ cat wireless-info.txt | nc termbin.com 9999
http://termbin.com/nl4b
robert@robert-pc ~ $

Thanks for any help or advice.

[rui no onna]

Have you updated the kernel? Perhaps try using an older kernel? It seems newer kernels are having problems with Broadcom wireless.

I believe you can switch kernels by pressing Shift while booting (please do correct me if I'm wrong, I'm very new to Linux).

[uncle_robie]

Thank you. Yes I did recently upgrade the kernel.

I tried holding the shift key at start up 3 times and it didn't open grub.

[JeremyB]

In terminal

Code: Select all

sudo apt-get purge bcmwl-kernel-source && sudo apt-get install firmware-b43-installer

Reboot

[JeremyB]

My wireless has been working ok for one year and has now stopped and I have to go hard wire, how do I go about fault finding the problem?

Can you provide some details, in terminal

Code: Select all

inxi -Fxxxz

[uncle_robie]

In terminal

Code: Select all

sudo apt-get purge bcmwl-kernel-source && sudo apt-get install firmware-b43-installer

Reboot

Worked. Thank you very much.

[jamesowens]

Thanks for your help, I replaced the wlan card at cost of £4.00 and the system is back up and running ok.