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I'm a new user of Ubuntu and I keep seeing people saying to go to Preferences -> Sound and then the Sounds tab. I don't have a sounds Tab. I'm using the latest version of Ubuntu.

I have: Sound Effects, Hardware, Input, Output, Applications

How can I disable the boot up sound?

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migrated from Jan 24 '10 at 14:23

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Sounds like you are using Karmic 9.10 - at least I'm using it and have the same problem with the suggested solutions. For older versions of Ubuntu, the solution would be to explicitly choose no sound for the boot up sound. – Lena Schimmel Jan 31 '10 at 10:15
up vote 1 down vote accepted

On Ubunto 9.10 / karmic, the startup sound is handled by a startup application. You can disable (or change) the startup sound as described on

If you just want to disable, the important bit is:

Go to System -> Preferences -> Starup Applications Look for “GNOME Login Sound” in the list. If you don’t want to hear anything at startup, uncheck this box.

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How about changing Sound theme to No Sounds and uncheck Enable Window and button sound checkbox?

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Same problem here. Tried what you suggested, but it just muted everything when I'm logged in, but still makes a sound on booting up. – Lena Schimmel Jan 31 '10 at 10:14
This is really a comment, not an answer to the question. Please use "add comment" to leave feedback for the author. – Diogo Aug 9 '12 at 20:10

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