Wireless connection is lost

Questions about WIFI networks and devices
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jamesowens
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Wireless connection is lost

Post by jamesowens » Wed Jul 18, 2018 7:00 am

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
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Re: Wireless connection is lost

Post by jamesowens » Thu Jul 19, 2018 11:53 am

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

vladtepes
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Re: Wireless connection is lost

Post by vladtepes » Fri Jul 20, 2018 5:36 am

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?
Keep Calm
and
Impale Your Enemies

uncle_robie
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Re: Wireless connection is lost

Post by uncle_robie » Tue Jul 24, 2018 7:37 am

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
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Re: Wireless connection is lost

Post by rui no onna » Tue Jul 24, 2018 10:08 am

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
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Re: Wireless connection is lost

Post by uncle_robie » Tue Jul 24, 2018 12:22 pm

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
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Re: Wireless connection is lost

Post by JeremyB » Tue Jul 24, 2018 1:07 pm

In terminal

Code: Select all

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

JeremyB
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Re: Wireless connection is lost

Post by JeremyB » Tue Jul 24, 2018 5:22 pm

jamesowens wrote:
Wed Jul 18, 2018 7:00 am
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
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Re: Wireless connection is lost

Post by uncle_robie » Tue Jul 24, 2018 6:40 pm

JeremyB wrote:
Tue Jul 24, 2018 1:07 pm
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
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Re: Wireless connection is lost

Post by jamesowens » Tue Aug 07, 2018 7:11 am

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

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