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I hate the terminal beep and I want it removed completely. I added this line to my /etc/modproble.d/blacklist.conf file:

blacklist pcspkr

However when I reboot the lsmod output shows it loaded:

[root@localhost ~]# lsmod | grep pcspkr
pcspkr                  7105  0

I'm running CentOS 5.7

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4 Answers

up vote 1 down vote accepted

Try to put something like this...

rmmod pcspkr

...in some of the startup scripts (such as /etc/init.d/rc.local)

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had to use /etc/rc.d/rc.local, thanks! –  flashnode Feb 17 '12 at 0:29
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I had this kind of problem with the nouveau module on Fedora 16. It seems to be caused by the presence of the module in the init ramdisk. You can try to make a new one (after you've added the blacklist line in modprode.d).

Try to do this :

cd /boot
mv initrd-$(uname -r).img initrd-$(uname -r).pcspkr.img
mkinitrd initrd-$(uname -r).img $(uname -r)

See this CentOS wiki entry

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A better way would be to create a conf file for pcspkr (as root):

echo "blacklist pcspkr" >> /etc/modprobe.d/pcspkr.conf

That will stop the module from being loaded next time you reboot. You will still have to run

rmmod pcspkr

to unload the module from the already running system.

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The pcspkr module is still in lsmod output after trying your suggestion. –  flashnode Feb 24 '12 at 16:44
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A more permanent (and OS-independent) solution is to open the PC case and disconnect the internal speaker from the motherboard.

It is a 4-pin connector with only two wires that looks like this:

enter image description here

You will find it connected somewhere near the edge of the motherboard along with several other connectors, looking similar to this:

enter image description here

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