/etc/xdg/autostart/unity-fallback-mount-helper.desktop is in unity-settings-daemon 15.04.1+18.04.20180413-0ubuntu1.
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 11 12 13 | [Desktop Entry]
Name=Mount Helper
Comment=Automount and autorun plugged devices
Exec=/usr/lib/unity-settings-daemon/unity-fallback-mount-helper
Icon=drive-optical
Terminal=false
Type=Application
Categories=
NoDisplay=true
OnlyShowIn=Unity;
X-GNOME-Autostart-Notify=true
AutostartCondition=GNOME3 unless-session gnome
X-Ubuntu-Gettext-Domain=unity-settings-daemon
|