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Ive just did a fresh install of "Ubuntu 24.10" downloaded from the official site.

The problem is that my wifi adapter is not being recognized - not even in "additional drivers".

The network adapter is: BCM43142 802.11b/g/n

Ive tried solution #3 from this site:

https://itsfoss.com/fix-no-wireless-network-ubuntu/

or specificaly sudo apt install firmware-b43-installer but it didnt helped.

The wifi was working fine in 24.04 and the "secure boot" is disabled.

Can someone help me with this issue?

Thanks in advance... :)

stumblebee
  • 4,379
Merlo
  • 11

2 Answers2

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I can confirm that doing a fresh install of "Ubuntu 24.04" downloaded from the official site, then the wifi is working since the beginning. Upgrade from 24.04 to 24.10 has solved the issue - wifi stayed operational. Thanks to everyone for their help.

Merlo
  • 11
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First, make sure you don't turned off the wifi by the keyboard button

Connect to the internet by cable or mobile USB cable and apply these commands:

wget http://www.lwfinger.com/b43-firmware/broadcom-wl-6.30.163.46.tar.bz2
tar xfvj broadcom-wl-6.30.163.46.tar.bz2
sudo apt install b43-fwcutter
sudo b43-fwcutter -w /lib/firmware broadcom-wl-6.30.163.46/broadcom-wl-6.30.163.46.wl_apsta.o
sudo modprobe -r b43 bcma
sudo modprobe -r brcmsmac bcma
sudo modprobe -r wl
sudo modprobe b43

if you see this error after the last command "FATAL: Module b43 not found in directory /lib/modules/6.8.0-31-generic", do these:

sudo apt install linux-firmware linux-modules-6.8.0-31-generic linux-modules-extra-6.8.0-31-generic
sudo modprobe b43

make sure to replace 6.8.0-31 with appropriate numbers based on your kernel

Installing Broadcom Wireless Drivers

Talaat Etman
  • 1,340