WiFi not working in Ubuntu20 on MacBookPro 13 (2020), dual booting, trinidad wifi drivers issue

Question

After purchasing new equipment which is MacBook Pro 13

• Catalina 10.15.7
• 4 x USB-C
• release year: 2020
• model 16,2

I decided to install Ubuntu 20 as dual boot.

Previously I installed Ubuntu from raw .iso but it has created too many problems with drivers:

• keyboard
• touchpad
• WIFI !

Then I came across to ready .ISO Image dedicated for MacBooks generally - https://github.com/marcosfad/mbp-ubuntu

While I was reading the article, I found mention about not working WiFi with MBP 16,1 (I was hoping on 16,2 is working)... after Ubuntu installed I noticed WiFi problem (no adapters detected) - this is where hell began...

I tried several ways to solve this problem (mainly mentioned below) - unsuccessfully.

ioreg -l | grep C-4364 | tr "|" "\n"

"RequestedFiles" = ({"Firmware"="C-4364__s-B3/trinidad.trx","TxCap"="C-4364__s-B3/trinidad-X0.txcb","Regulatory"="C-4364__s-B3/trinidad-X0.clmb","NVRAM"="C-4364__s-B3/P-trinidad-X0_M-HRPN_V-u__m-7.7.txt"})





       "images" = {"C-4364__s-B3/trinidad.trx"={"imagetype"="Firmware","required"=Yes,"imagename"="C-4364__s-B3/trinidad.trx"},"C-4364__s-B3/trinidad-X0.clmb"={"imagetype"="Regulatory","required"=Yes,"imagename"="C-4364__s-B3/trinidad-X0.clmb"},"C-4364__s-B3/trinidad-X0.txcb"={"imagetype"="TxCap","required"=No,"imagename"="C-4364__s-B3/trinidad-X0.txcb"},"C-4364__s-B3/P-trinidad-X0_M-HRPN_V-u__m-7.7.txt"={"imagetype"="NVRAM","required"=Yes,"imagename"="C-4364__s-B3/P-trinidad-X0_M-HRPN_V-u__m-7.7.txt"}}

ls -la /usr/share/firmware/wifi/C-4364__s-B3 | grep "trinidad"

lrwxr-xr-x    1 root  wheel      32 28 maj 03:46 P-trinidad-ID_M-HRPN_V-m__m-7.9.txt -> P-trinidad_M-HRPN_V-m__m-7.9.txt
lrwxr-xr-x    1 root  wheel      32 28 maj 03:46 P-trinidad-ID_M-HRPN_V-u__m-7.7.txt -> P-trinidad_M-HRPN_V-u__m-7.7.txt
lrwxr-xr-x    1 root  wheel      32 28 maj 03:46 P-trinidad-X0_M-HRPN_V-m__m-7.9.txt -> P-trinidad_M-HRPN_V-m__m-7.9.txt
lrwxr-xr-x    1 root  wheel      32 28 maj 03:46 P-trinidad-X0_M-HRPN_V-u__m-7.7.txt -> P-trinidad_M-HRPN_V-u__m-7.7.txt
lrwxr-xr-x    1 root  wheel      32 28 maj 03:46 P-trinidad-X2_M-HRPN_V-m__m-7.9.txt -> P-trinidad_M-HRPN_V-m__m-7.9.txt
lrwxr-xr-x    1 root  wheel      32 28 maj 03:46 P-trinidad-X2_M-HRPN_V-u__m-7.7.txt -> P-trinidad_M-HRPN_V-u__m-7.7.txt
lrwxr-xr-x    1 root  wheel      32 28 maj 03:46 P-trinidad-X3_M-HRPN_V-m__m-7.9.txt -> P-trinidad_M-HRPN_V-m__m-7.9.txt
lrwxr-xr-x    1 root  wheel      32 28 maj 03:46 P-trinidad-X3_M-HRPN_V-u__m-7.7.txt -> P-trinidad_M-HRPN_V-u__m-7.7.txt
-rw-r--r--    1 root  wheel   12950  1 wrz 07:05 P-trinidad_M-HRPN_V-m__m-7.9.txt
-rw-r--r--    1 root  wheel   12891  1 wrz 07:05 P-trinidad_M-HRPN_V-u__m-7.7.txt
lrwxr-xr-x    1 root  wheel      13 28 maj 03:46 trinidad-ID.clmb -> trinidad.clmb
lrwxr-xr-x    1 root  wheel      12 28 maj 03:46 trinidad-ID.trx -> trinidad.trx
lrwxr-xr-x    1 root  wheel      13 28 maj 03:46 trinidad-ID.txcb -> trinidad.txcb
lrwxr-xr-x    1 root  wheel      13 28 maj 03:46 trinidad-X0.clmb -> trinidad.clmb
lrwxr-xr-x    1 root  wheel      12 28 maj 03:46 trinidad-X0.trx -> trinidad.trx
lrwxr-xr-x    1 root  wheel      13 28 maj 03:46 trinidad-X0.txcb -> trinidad.txcb
lrwxr-xr-x    1 root  wheel      13 28 maj 03:46 trinidad-X2.clmb -> trinidad.clmb
lrwxr-xr-x    1 root  wheel      12 28 maj 03:46 trinidad-X2.trx -> trinidad.trx
lrwxr-xr-x    1 root  wheel      13 28 maj 03:46 trinidad-X2.txcb -> trinidad.txcb
lrwxr-xr-x    1 root  wheel      13 28 maj 03:46 trinidad-X3.clmb -> trinidad.clmb
lrwxr-xr-x    1 root  wheel      12 28 maj 03:46 trinidad-X3.trx -> trinidad.trx
lrwxr-xr-x    1 root  wheel      13 28 maj 03:46 trinidad-X3.txcb -> trinidad.txcb
-rw-r--r--    1 root  wheel   35322  9 kwi  2020 trinidad.clmb
lrwxr-xr-x    1 root  wheel      10  2 paź 15:17 trinidad.trx -> borneo.trx
-rw-r--r--    1 root  wheel     723  9 kwi  2020 trinidad.txcb

I found a few similar issues like my:

• https://github.com/mikeeq/mbp-fedora-kernel/issues/3
• https://vinodhsblog.co.za/ubuntu-20-04-lts-on-a-macbook-pro/
  • Using this repo from article above to move drivers from MacOs to Ubuntu side https://github.com/stefanpartheym/mbp15-wifi-driver
• https://github.com/Dunedan/mbp-2016-linux/issues/112

After moving drivers from MacOS to Ubuntu and configured followed by articles and people advices WiFi not working whole time... The last important log about wifi drivers from dmesg:

brcmf_pcie_download_fw_nvram: FW failed to initialize

Can you help me with this issue?

Answer 1

I have an exactly same model (16,2) of MacBookPro as yours, which has Broadcom 4364 v3 (rev 04). You can download the driver of Wifi and Bluetooth from

https://github.com/j3ffyang/mbp-fedora/tree/main/brcm

and place them at /lib/firmware/brcm, then execute sudo modprobe -r brcmfmac && sudo modprobe brcmfmac

This solution has been tested on Ubuntu 20.04 and Fedora 35 both.