/usr/share/tcos/hooks-addons/52intel is in initramfs-tools-tcos 0.89.86.
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 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | # hook for intel graphics card
# Copyright Rubén Gómez Antolí <listas at mucharuina [.] com>
cat << EOF > $DESTDIR/sbin/disable_dpms
#!/bin/sh
sleep 2
waitforX || exit
# disable dpms
sleep 2
xset -dpms
EOF
chmod +x $DESTDIR/sbin/disable_dpms
cat << EOF > $DESTDIR/etc/X11/PreRun/30intel_dpms
#!/bin/sh
test1=0
test1=\$(get_vga_vendor 8086)
if [ "\$test1" = "1" ]; then
/sbin/disable_dpms &
fi
EOF
chmod +x $DESTDIR/etc/X11/PreRun/30intel_dpms
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