No WiFi after Linux 20 install

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NordicMonkey
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No WiFi after Linux 20 install

Post by NordicMonkey »

Hello,

I am a long time reader, but a novice Linux user. I had Windows 10 on my computer before installing Linux Mint 20 where Windows was deleted. Although the WiFi worked without any problems before the install, it disappeared afterward.

Now, the only network device listed is a Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet. I purchased a WiFi bridge to try to connect just long enough to do the required updates, hoping they would fix the WiFi issue, but I still cannot get online. When I first plugged in the bridge the computer said it was connected via Ethernet, but it still would not open a webpage. I restarted the computer and now it won’t even connect to the Ethernet.

At this point I am not giving up, but have no idea what else to do.

Thank you in advance for any advice you can share!
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
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JeremyB
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Re: No WiFi after Linux 20 install

Post by JeremyB »

Any info from terminal for

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lspci -nnk | grep -iA3 net
NordicMonkey
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

Bash: 1spci: command not found
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Larry78723
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Re: No WiFi after Linux 20 install

Post by Larry78723 »

@NordicMonkey - the first character in that command is the letter l, not the number 1.
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sleeper12
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Re: No WiFi after Linux 20 install

Post by sleeper12 »

Copy & paste that command rather than typing it to avoid typos.
NordicMonkey
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

I would prefer to paste the text, but can't as I am using another computer's internet while I work on the one in question. The above code did work once I changed the "1" to an "l" -- thank you @Lary78723 for the clarification. Below is the result:

01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 07)
Subsystem: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:0123]
Kernel driver in use: r8169
Kernel modules: r8169
sleeper12
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Re: No WiFi after Linux 20 install

Post by sleeper12 »

Check this:

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 mokutil --sb-state 
If it shows secure boot is enabled, disable it in Bios.
NordicMonkey
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

It showed:

SecureBoot disabled
Platform is in Setup Mode
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Re: No WiFi after Linux 20 install

Post by sleeper12 »

Have you tried shutting down & restart your router/modem & machine?
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Re: No WiFi after Linux 20 install

Post by sleeper12 »

Also, what does this show:

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 rfkill list && iwconfig 
NordicMonkey
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

I have restarted the computer multiple times since first installing Linux - to no avail.
Here are the results to the recommended code:

0: hci0: Bluetooth
Soft Blocked: yes
Hard Blocked: no

l: hcil: Bluetooth
Soft Blocked: yes
Hard Blocked: no

enpls0 no wireless extensions.

bridge0 no wireless extensions.

lo no wireless extensions.
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Re: No WiFi after Linux 20 install

Post by sleeper12 »

Is your ethernet cable plugged in? If so, unplug it, that can block wifi.
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

It is a wifi to ethernet bridge. Should I run the code after unplugging it?
sleeper12
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Re: No WiFi after Linux 20 install

Post by sleeper12 »

No wifi is showing at all. Try:

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 sudo service network-manager restart 
If nothing, wait for better help to arrive.
NordicMonkey
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

Still nothing. Thank you for your help.
sleeper12
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Re: No WiFi after Linux 20 install

Post by sleeper12 »

Ok, I'm not familiar with a wifi to ethernet bridge issue, so someone else may know.
NordicMonkey
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

I am open to try any fix for this. Before the Linux install, Windows connected to the WiFi without any problems. The WiFi to Ethernet bridge was purchased only to try and fix the original issue of Linux not recognizing the WiFi. It is not a necessary component.
JeremyB
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Re: No WiFi after Linux 20 install

Post by JeremyB »

Run these commands in terminall and post URL

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wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info
cat wireless-info.txt | nc termbin.com 9999
NordicMonkey
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

Wget: unable to resolve host address ‘GitHub’

Cat: wireless-info.txt no such file or directory

Nc: getaddrinfo form host “term in.com” port 9999: Name or service not known
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Re: No WiFi after Linux 20 install

Post by NordicMonkey »

Update:

I discovered that the bcmwl-kernel-source package was not installed and have since been trying to reinstall it; however, when I run the following code:

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sudo apt purge bcmwl-kernel-source && sudo apt install bcmwl-kernel-source
I receive:

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The following packages have unmet dependencies: 
	bcmwl-kernel-source : Depends: libc6-dev but it is not going to be installed
	E: Unable to correct problems, you have held broken packages.
I then tried:

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sudo apt install libc6-dev
and received:

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The following packages have unmet dependencies: 
	libc6-dev : Depends: libc6 (= 2.31-0ubuntu9) but 2.31-0ubuntu9.1 is to be installed
	E: Unable to correct problems, you have held broken packages.
Any ideas? Thank you to everyone who has posted here.
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