After installing Elementary OS 6 Odin on a macbook pro 13" late 2011 , network manager only shows wired network, no wifi.
Output lspci:
03:00.0 Network controller: Broadcom Inc. and subsidiaries BCM4331 802.11a/b/g/n (rev 02)
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Sign up to join this communityAfter you connect to internet using your smartphone and USB cable, do this
sudo apt install bcmwl-kernel-source
More details here https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx
Based on the source, it looks like you might try the b43 driver. https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx
Specifically, this post suggests following commands:
Remove bcmwl-kernel-source package, then reboot.
sudo apt-get remove --purge bcmwl-kernel-source
sudo reboot
Install b43 broadcom firmware.
sudo apt-get install firmware-b43-installer
Reload package.
sudo modprobe -r b43
sudo modprobe b43
I finally make it work,
uninstall all drivers for a fresh install
sudo apt-get purge b43-fwcutter firmware-b43-installer firmware-b43-lpphy-installer firmware-b43legacy-installer bcmwl*
re install only this ones
sudo apt-get install firmware-b43-installer b43-fwcutter
after that remove or comment the blacklisted kernel module bcm43xx
in the file /etc/modprobe.d/blacklist.conf. You can do it manually or with this command
keyword='blacklist bcm43xx'; sudo sed -i "/^$keyword/ c#$keyword" blacklist.conf