Comment 8 for bug 862374

I installed 11.10 Beta 2 yesterday and after installing gnome-shell and all the required updates, I started to experience the same issue listed in this report. Upon troubleshooting the issue for a few hours, I found that /usr/bin/canberra-gtk-play does not look for the 'ogg' files under "/usr/share/sounds/ubuntu/stereo/". Instead, it expects the 'ogg' files to be under "/usr/share/sounds/".

Also, when attempting to manually run the "/usr/bin/canberra-gtk-play --id="desktop-login" --description="GNOME Login"", the following message was displayed in the terminal window:

Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap"
Failed to play sound: File or data not found

To clear the Gtk-WARNING message and get the login sound (drums) back, I performed the following steps:

1. sudo apt-get install gtk2-engines-pixbuf
     > This cleared the Gtk-WARNING
2. sudo cp /usr/share/sounds/ubuntu/stereo/* /usr/share/sounds/*

I hope this is fixed in the final release of ubuntu 11.10!