/usr/share/upstart/xdg/autostart/indicator-sound.desktop is in indicator-sound 12.10.2+14.04.20140401-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | [Desktop Entry]
Type=Application
Name=Indicator Sound
Exec=/usr/lib/x86_64-linux-gnu/indicator-sound/indicator-sound-service
OnlyShowIn=Unity;XFCE;
NoDisplay=true
StartupNotify=false
Terminal=false
Hidden=true
X-Ubuntu-Gettext-Domain=indicator-sound
|