Remove system beep on Ubuntu

This quick tips show you how to remove system beep on ubuntu which sometimes annoying especially for laptop user.
Open up /etc/modprobe.d/blacklist, add this line :

blacklist pcspkr

Then, restart your computer to see the changes.

Or, if you just want to disable it temporarily, just run :

$ sudo modprobe -r pcspkr

That’s it.
Source here.