/var/lib/kylin-assistant-daemon/autostart/libcanberra-login-sound.desktop is in youker-assistant 3.0.0-0ubuntu1.
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 | [Desktop Entry]
Type=Application
Name=GNOME Login Sound
Comment=Plays a sound whenever you log in
Exec=/usr/bin/canberra-gtk-play --id="desktop-login" --description="GNOME Login"
OnlyShowIn=GNOME;Unity;UKUI;
AutostartCondition=GSettings org.gnome.desktop.sound event-sounds
X-UKUI-Autostart-Phase=Application
X-UKUI-Provides=login-sound
X-UKUI-Autostart-enabled=true
NoDisplay=false
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