If you’re looking to get rid of the annoying system beep in Ubuntu, here is how to do it from both the command line, and from the Gnome desktop.
Disable the System Beep from the Command Line
#sudo vi /etc/modprobe.d/blacklist
And then add:
#pc speaker beep
blacklist pcspkr
Save and quit the file:
:wq
Now, remove the pcspkr module:
sudo rmmod pcspkr
Disable the System [...]
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