2 files changed, 25 insertions, 0 deletions

diff --git a/xorg/.local/share/systemd/user/xbacklightmon.service b/xorg/.local/share/systemd/user/xbacklightmon.service
new file mode 100644
index 0000000..c603974
--- /dev/null
+++ b/xorg/.local/share/systemd/user/xbacklightmon.service
@@ -0,0 +1,8 @@
+[Unit]
+Description=Watches /sys/class/backlight/brightness and applies it to xorg-backlight
+After=graphical.target
+Wants=graphical.target
+
+[Service]
+Type=simple
+ExecStart=/home/tom/.local/usr/bin/xbacklightmon
diff --git a/xorg/.local/usr/bin/xbacklightmon b/xorg/.local/usr/bin/xbacklightmon
new file mode 100755
index 0000000..39f6b48
--- /dev/null
+++ b/xorg/.local/usr/bin/xbacklightmon
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+path=/sys/class/backlight/acpi_video0
+
+luminance() {
+    read -r level < "$path"/actual_brightness
+    factor=$((max / 100))
+    printf '%d\n' "$((level / factor))"
+}
+
+read -r max < "$path"/max_brightness
+
+xbacklight -set "$(luminance)"
+
+inotifywait -me modify --format '' "$path"/actual_brightness | while read; do
+    xbacklight -set "$(luminance)"
+done