Since yesterday my pcie wireless adapter doesn't show up anymore in the drop down menu (upper right corner of the screen) or in any other menu as far as I saw. It's an Asus PCE-AC68 and it's using a Broadcom BCM4360 driver.
I tried a solution I found on this website ( Installing Broadcom Wireless Drivers ) but it threw a dpgk error during the reinstalling another solution I tried (https://suryanshpradhan.wordpress.com/2020/01/17/how-to-fix-broadcom-bcm43142-wifi-not-working-on-ubuntu-18-04-3-lts/ ) didn't work since when I tried sudo modprobe -rv bcma wl or sudo rmmod bcma wl I got permission denied, I tried to remove bcma but I couldn't since it was in use, I also tried to cancel everything with the name bcmwl-kernel-source but when I tried to install the package again I got an error, I reinstalled a fresh Ubuntu 20.10 (before I had 20.04) erasing everything from the SSD but not even this fixed the issue.
I'm sure the wireless adapter works as I use it on Win 10.
Edit: I've just run the command lshw -C network and the broadcom network results UNCLAIMED
Edit 2: now that I found the network was unclaimed I was able to find a possible solution related to secure boot and by going inside the BIOS changing secure boot from Windows to Other OS solved my issue. Strange it worked till yesterday and suddenly stopped though
Edit 3: the secure boot solution worked for the 20.10 but not for the 20.04, to fix the issue on Ubuntu 20.04 I followed the six steps here: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1907557
