From 678068e9599c35ea15c734891cc884c6808a3250 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hannes=20K=C3=B6rber?= <hannes@hkoerber.de>
Date: Fri, 3 May 2024 14:38:37 +0200
Subject: [PATCH] Make backlight work

---
 packages.yml |  2 +-
 playbook.yml | 15 +++++++++++++++
 user.yml     |  1 +
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/packages.yml b/packages.yml
index 3cadf85..c686df1 100644
--- a/packages.yml
+++ b/packages.yml
@@ -145,7 +145,7 @@ packages:
     black:
       archlinux: ["python-black"]
     xbacklight:
-      archlinux: ["xorg-xbacklight"]
+      archlinux: ["acpilight"]
     wireshark:
       archlinux: ["wireshark-cli", "wireshark-qt"]
     nmap:
diff --git a/playbook.yml b/playbook.yml
index 8425d3f..056ee48 100644
--- a/playbook.yml
+++ b/playbook.yml
@@ -661,6 +661,21 @@
           state: absent
         become: true
 
+    - name: backlight configuration
+      tags:
+        - backlight
+      block:
+        # See https://wiki.archlinux.org/title/backlight#ACPI
+        - name: create udev rule to allow video group backlight access
+          copy:
+            dest: /etc/udev/rules.d/backlight.rules
+            owner: root
+            group: root
+            mode: '0644'
+            content: |
+              ACTION=="add", SUBSYSTEM=="backlight", RUN+="/bin/chgrp video $sys$devpath/brightness", RUN+="/bin/chmod g+w $sys$devpath/brightness"
+          become: true
+
     - include_tasks: user.yml
       args:
         apply:
diff --git a/user.yml b/user.yml
index bd53292..40eeeff 100644
--- a/user.yml
+++ b/user.yml
@@ -8,6 +8,7 @@
       - sudonopw
       - games
       - kvm
+      - video
 
 - name: create user group
   group: