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If I want to disable beep sounds from stuff like bash, I add this line to "/etc/inputrc":

set bell-style none

Sadly, this doesn't work for some other events like GDM start-up and shut down. I thought that adding this line to "/etc/modprobe.d/blacklist.conf" would help:

blacklist pcspkr

That makes me wonder and doubt where the sound actually comes from.

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There's no such thing as “the” beep sound. Each program or set of programs has its own sound event system (simple beeps for older programs such as bash, sound files for newer frameworks such as Gnome or KDE). Are you trying to suppress all the ones that come out of the PC speaker, as opposed to the sound card? Or all sound events in all applications, but not explicit playing with sound and movie players (in which case you have to do it one application/framework at a time)? – Gilles Jul 16 '11 at 13:54
I want to suppress the beep that I thought came from the PC speaker. It is way too loud and I don't even need it. The sound events are something else (and I don't even enable them). – Tshepang Jul 16 '11 at 14:25
up vote 4 down vote accepted

Solution for GNOME 2 (Debian 6):

I tried one more thing... System -> Preferences -> Sound. This brings up the Volume Control application:

enter image description here

From there I click on Preferences which brings up another window. I then click on Beep, and that mutes window thus:

enter image description here

I then proceed to clicking on the speaker icon on PCM column, after which I become happy.

Solution for GNOME 3 (Debian 7):

Edit /etc/gdm3/greeter.gsettings such that you have this entry:

# Disabling sound in the greeter

You'll probably just have to uncomment the 2 lines. Note that I can't find a way to do something like this as normal user. I guess GNOME 3 killed some configurability.

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