Fix no sound in Ubuntu 20.04 after kernel 5.8 installation.

I recently installed the 5.8.0-41-generic kernel and I had no detected sound hardware after booting into the new kernel, but it turns out that a package was missing from my machine. I installed this package and then replugged my sound hardware and it worked straight away.

┌──[jason@192.168.1.2]─[~]
└──╼  ╼ $ sudo apt install linux-modules-extra-$(uname -r)

The command above will install the missing package and should fix your problem. Without this package, my sound hardware was not detected and I could not listen to music or anything. But it is easy to fix.