From f3777c15f1e88bff05a2b6aa0d08d5072ce8d1bd Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Mon, 23 Aug 2021 18:59:49 -0400
Subject: alsvid3: Turn off screen on lid close

Inspired by <https://unix.stackexchange.com/q/472410/>.
---
diff --git a/hosts/alsvid3/postinst b/hosts/alsvid3/postinst
index eb6f377..892bf70 100644
--- a/hosts/alsvid3/postinst
+++ b/hosts/alsvid3/postinst
@@ -27,12 +27,41 @@ cat >"${target}/boot/grub/libreboot_grub.cfg" <<-EOF
 	boot
 	EOF
 
-# Don't suspend on lid close.
-cp -p "${target}/etc/elogind/logind.conf" \
-	"${target}/etc/elogind/logind.conf.dist"
-sed 's/^.*\(HandleLidSwitch.*\)=.*$/\1=ignore/' \
-	"${target}/etc/elogind/logind.conf.dist" \
-	>"${target}/etc/elogind/logind.conf"
+# Don't suspend on lid close.  Turn off screen instead.
+# Unfortunately, colord recursively depends on a logind.
+in_target apt-get -q -y --autoremove purge elogind || return 1
+# Install acpid without acpi-support-base.
+in_target apt-get -q -y --no-install-recommends install acpid
+cat >"${target}/etc/acpi/events/button" <<'EOF'
+event=button.*
+action=/etc/acpi/button.sh %e
+EOF
+cat >"${target}/etc/acpi/button.sh" <<'EOF'
+#!/bin/sh
+
+set -eu
+
+export XAUTHORITY=~pj/.Xauthority
+export DISPLAY=:0
+
+case "${1}" in
+	'button/lid')
+		case "${3}" in
+			'open')
+				logger 'acpid: lid opened'
+				xset dpms force on
+				;;
+			'close')
+				logger 'acpid: lid closed'
+				xset dpms force off
+				;;
+		esac
+esac
+# button/sleep could be handled too, but there are two events per press with
+# different $2, $3, and $4.
+# More events may be exposed if thinkpad_acpi is patched to support Taurinus:
+# http://git.proteanos.com/pkg/linux-libre-4.19.git/tree/patches/03_thinkpad_acpi_support-libiquity-taurinus-laptops.patch
+EOF
 
 # Turn on numlock on the VTs.
 cat >"${target}/etc/rc.local" <<'EOF'
--
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