How can I disable system beep?

This isn't a bug as far as I'm aware, and there are ways to disable it:http://ubuntu-tutorials.com/2007/07/26/turning-off-the-system-hardware-beep-linux-tutorial/ . As such, I'm converting this bug to a question.

http://ubuntu-tutorials.com/2007/07/26/turning-off-the-system-hardware-beep-linux-tutorial/
System>preferences>sound
The sounds tab.
Uncheck the play alert sound box.

before I post the problem i already tried:
System>preferences>sound
The sounds tab.
Uncheck the play alert sound box
but this didn't work.

this (http://ubuntu-tutorials.com/2007/07/26/turning-off-the-system-hardware-beep-linux-tutorial/) indeed works, but just as the words in the link "the system beeps for a reason–it’s trying to tell you something–you should leave it on". use "sudo modprobe -r pcspkr" to stop beep just like stop a painful patient cry out by keeping his mouth shutdown.

now the beep does not make me uncomfortable any more, may be the reason in "the system beeps for a reason" more important .

i think the the answer above solved disable system beep, but did not solve why the ubuntu beep in my computer, and just disable system beep certainly not the question i want to ask .

if i just simply "uncheck the play alert sound box", or remove the " pcspkr" module, i just feel like my computer get sick but i just pretend to not known.

i also want to say thanks to you all!

In terminal type
sudo gedit /etc/modprobe.d/blacklist
Then add to the bottom of the file.
blacklist pcspkr
Then reboot.

Hope that helps
Shane

ok , may be i did not describe my thought clearly.

but thank you all the same.

On Sat, Apr 18, 2009 at 9:24 PM, shane fagan
<email address hidden> wrote:
> Your question #67809 on Ubuntu changed:
> https://answers.edge.launchpad.net/ubuntu/+question/67809
>
>    Status: Open => Answered
>
> shane fagan proposed the following answer:
> In terminal type
> sudo gedit /etc/modprobe.d/blacklist
> Then add to the bottom of the file.
> blacklist pcspkr
> Then reboot.
>
> Hope that helps
> Shane
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
> https://answers.edge.launchpad.net/ubuntu/+question/67809/+confirm?answer_id=5
>
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>just disable system beep certainly not the question i want to ask

You may deactivate splash in menu.lst, to see in case error messages during shutdown or reboot.
https://help.ubuntu.com/community/GrubHowto

Maybe logfiles give a hint?
https://help.ubuntu.com/community/LinuxLogFiles

In case of BIOS related:
http://en.wikipedia.org/wiki/Power-on_self-test