MacBookPro9,x - ArchWiki . I’d go with the solution of the b43-firmware package, the broadcom-wl solution is a bit shaky at the moment. Also try the 5.15LTS kernel, at least as a fall-back.
Hi thanks for the reply!! <333
Sorry to trouble you for more instructions! but can you please tell me what to do exactly? like the commands i need to type in?
Open the Add/remove software (the gui of the pamac package manager), search for ‘b43-firmware’, install it and reboot .
It’s an AUR (Arch User Repository) package, so if it doesn’t show in the Add/remove software you have to enable support for Third Party AUR repository:
Open Add/remove software >> click on the 3 vertical dots >> pick ‘Preferences’ >> type in your password >> pick ‘Third Party’ tab >> Enable AUR support and search again for ‘b43-firmware’.
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Hi I have installed this firmware successfully and rebooted. However, the Wi-Fi is still not showing in the networks 
This is how it looks right now:
Network:
Device-1: Broadcom NetXtreme BCM57765 Gigabit Ethernet PCIe driver: tg3
v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1 port: N/A bus-ID: 01:00.0
chip-ID: 14e4:16b4 class-ID: 0200
IF: enp1s0f0 state: up speed: 1000 Mbps duplex: full mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: dynamic noprefixroute scope: global
IP v6: <filter> type: noprefixroute scope: link
Device-2: Broadcom BCM4331 802.11a/b/g/n driver: N/A modules: bcma pcie:
gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 02:00.0 chip-ID: 14e4:4331
class-ID: 0280
WAN IP: <filter>
Also I see there is option for adding connection in the system settings. Do I need to add it manually?
Again, thanks so much for the replies!!
Hello @Lalo,
this N/A says that no driver is loaded for your wifi device.
Perhaps the right driver isnt installed or blacklisted. Can post the output from this command:
grep blacklist /etc/modprobe.d/*
Hi @kisun !
Thanks for the reply!
I have typed in the command and this is the output:
grep blacklist /etc/modprobe.d/* 1 ✘
zsh: no matches found: /etc/modprobe.d/*
Can you run the following commands one after the other.
sudo modprobe -r wl
sudo modprobe b43 allhwsupport=1
That should switch wifi on. To make it permanent open /etc/modules-load.d/modules.conf and add b43 underneath:
# List of modules to load at boot
b43
Now open /etc/modprobe.d folder and create empty document and name it b43.conf, open it and make it look like this:
options b43 allhwsupport=1
Reboot and it should work.
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Yes it worked!
Thank you!! <333
You’ll have to execute the 2 steps to make it permanent but well done.
Hi again! Sorry went out and just saw the edits!
I tried to type in the command:
/etc/modules-load.d/modules.conf
But the output was:
zsh: permission denied: /etc/modules-load.d/modules.conf
Thank you for the updated edits!
Can you use your file browser for this? Sorry, I’m on xfce, I don’t know if this works in kde.
Step 1: Go to /etc/modules-load.d folder, right-click on it and ‘Open as administrator’? That should allow you to edit the modules.conf file and add ‘b43’ at the bottom.
Step 2: Open /etc/modprobe.d folder, right-click >> ‘create new document’, name it ‘b43.conf’, open it and add ‘options b43 allhwsupport=1’.
If the above doesn’t work you can do all this in a terminal, use:
Step 1: use
sudo nano /etc/modules-load.d/modules.conf
to open the modules.conf file, edit it and add ‘b43’ at the bottom.
Step 2 : To create the b43.conf file inside the /etc/modprobe.d folder use:
sudo touch /etc/modprobe.d/b43.conf
Then open the new file with:
sudo nano /etc/modprobe.d/b43.conf
and edit it to make it look like this:
options b43 allhwsupport=1
Hi again! And thanks for all the continued and updated replies!
I have followed all the steps and I have checked the files are already in where they are and with the new edits. However, the Wi-Fi still doesn’t show automatically upon booting.
The manual turning it on still works.
Check again, what’s the output of
cat /etc/modules-load.d/modules.conf
cat /etc/modules-load.d/modules.conf ✔
# List of modules to load at boot
b43
And
cat /etc/modprobe.d/b43.conf
rebooted and checked again:
cat /etc/modprobe.d/b43.conf ✔
options b43 allhwsupport=1
cat /etc/modules-load.d/modules.conf ✔
# List of modules to load at boot
b43
That’s as it should be, maybe b43 is blacklisted. Show the output of
cat /etc/modprobe.d/blacklist.conf
cat /etc/modprobe.d/blacklist.conf ✔
cat: /etc/modprobe.d/blacklist.conf: No such file or directory
ls /etc/modprobe.d
ls /etc/modprobe.d 1 ✘
b43.conf