/etc/init/alsa-store.conf is in alsa-utils 1.0.25-1ubuntu5.
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 | # alsa-store - save sound card(s') mixer state(s)
#
# This task saves the sound card(s') mixer state(s) to
# /var/lib/alsa/asound.state on reboot or shutdown
description "save sound card(s') mixer state(s)"
start on runlevel [!2345]
task
exec /sbin/alsactl store
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