/usr/share/mate/autostart/ubuntu-mate-settings-overlay.desktop is in ubuntu-mate-default-settings 16.04.5.
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 | [Desktop Entry]
Type=Application
Exec=/usr/lib/ubuntu-mate/ubuntu-mate-settings-overlay
Terminal=false
X-MATE-Autostart-enabled=true
Name[en_GB]=Settings Overlay
Name=Settings Overlay
Comment[en_GB]=Ubuntu MATE Settings Overlay
Comment=Ubuntu MATE Settings Overlay
|