This question already has an answer here:

How can you disable the startup-sound? I mean the drums when you login. Edit: I have tried disabling Gnome Login Sound, but it keeps drumming.

And also set the volume to muted so that it sticks? Now when I press mute on keyboard the first keypress seems to lower the volume instead, and thus plays a sound. Second keypress works.

I would like to start without any sound at all.

Thanks

marked as duplicate by Parto, Pilot6, Organic Marble, Eric Carvalho, heemayl Nov 4 '16 at 16:35

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Just log out, then click on the little speaker icon in the upper right hand corner of the login screen. Set the volume here to Mute.

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