backlight

README.md

@@ -324,21 +324,18 @@ Otherwise, alpine wiki describes how to configure WiFi using `iwd`.
 
 ### Backlight
 
-**TODO 2024**
-
-```
-doas apk add light
-doas micro /etc/udev/rules.d/backlight.rules
 ```
-add the following lines into backlight.rules to make it possible for all users in video group (not just superusers) to control backlight:
-```
-ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="amdgpu_bl0", RUN+="/bin/chgrp video /sys/class/backlight/%k/brightness"
-ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="amdgpu_bl0", RUN+="/bin/chmod g+w /sys/class/backlight/%k/brightness"
+doas apk add enlighten
+doas rc-service udev restart
 ```
-and then
+
+and add the following lines to river config:
+
 ```
-doas rc-service udev restart
+riverctl map $mode None XF86MonBrightnessUp   spawn "BACKLIGHT_DEVICE=amdgpu_bl1 enlighten +5%"
+riverctl map $mode None XF86MonBrightnessDown spawn "BACKLIGHT_DEVICE=amdgpu_bl1 enlighten -5%"
 ```
+
 Backlight control with Fn+F5/F6 should work now.
 
 (`amdgpu_bl0` is specific for this laptop; value for others can be obtained from `/sys/class/backlight/`)

dotfiles/.config/river/init

@@ -141,9 +141,9 @@ do
     riverctl map $mode None XF86AudioPrev  spawn 'playerctl previous'
     riverctl map $mode None XF86AudioNext  spawn 'playerctl next'
 
-    # Control screen backlight brighness with light (https://github.com/haikarainen/light)
-    riverctl map $mode None XF86MonBrightnessUp   spawn "light -A 5 && light -G | cut -d'.' -f1 > $XDG_RUNTIME_DIR/wobpipebright"
-    riverctl map $mode None XF86MonBrightnessDown spawn "light -U 5 && light -G | cut -d'.' -f1 > $XDG_RUNTIME_DIR/wobpipebright"
+    # Control screen backlight brighness with enlighten (https://github.com/HalosGhost/enlighten)
+    riverctl map $mode None XF86MonBrightnessUp   spawn "BACKLIGHT_DEVICE=amdgpu_bl1 enlighten +5%"
+    riverctl map $mode None XF86MonBrightnessDown spawn "BACKLIGHT_DEVICE=amdgpu_bl1 enlighten -5%"
 done
 
 # Set background and border color