How to Disable The PC (internal/system) Speaker in Ubuntu 8.04/8.10
This may also be referred to as the system beep. Ubuntu utilizes this function found on the majority of computers.
Blacklisting the module
This method requires basic knowledge of the terminal, but is still very simple.
Fire up a terminal session (Applications > Accessories > Terminal) and proceed with the following command:
sudo gedit /etc/modprobe.d/blacklist
Enter your password when prompted, it will not display any input.
At the very bottom of the file that is now open in Gedit append the following:
blacklist pcspkr
Save and close. Next boot, the module will not be loaded and your annoyance ceases.
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