From 5f1f6182cfb4a52aeca55e0a4d875451bed90a3b Mon Sep 17 00:00:00 2001
From: Douglas Teles <dga.teles@gmail.com>
Date: Tue, 7 Jul 2026 19:24:07 -0300
Subject: [PATCH] fake-suspend: cut the panel backlight even when DPMS handles
 the blank

The compositor path blanked the framebuffer but could leave the panel
backlight powered, so the "sleeping" console showed a black yet lit
screen and kept burning the display power budget. Turn the backlight
off through bl_power in both paths and restore it on wake.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 .../archr/sources/scripts/archr-fake-suspend  | 25 ++++++++-----------
 1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/projects/ArchR/packages/archr/sources/scripts/archr-fake-suspend b/projects/ArchR/packages/archr/sources/scripts/archr-fake-suspend
index 02ace82f03..44000ac164 100755
--- a/projects/ArchR/packages/archr/sources/scripts/archr-fake-suspend
+++ b/projects/ArchR/packages/archr/sources/scripts/archr-fake-suspend
@@ -66,14 +66,14 @@ display_off() {
     elif echo "${UI_SERVICE}" | grep "weston"; then
       weston-dpms -m off
     fi
-  else
-    # DPMS disabled, just turn off the backlight
-    ${DEBUG} && log $0 "Backlight off"
-
-    for BL_POWER_DEVICE in "${BL_POWER_DEVICES[@]}"; do
-      echo 4 > "${BL_POWER_DEVICE}"
-    done
   fi
+  # Always cut the backlight too: the compositor path blanks the
+  # framebuffer but can leave the panel backlight powered (black yet
+  # lit screen), which wastes most of the display power budget.
+  ${DEBUG} && log $0 "Backlight off"
+  for BL_POWER_DEVICE in "${BL_POWER_DEVICES[@]}"; do
+    echo 4 > "${BL_POWER_DEVICE}"
+  done
 }
 
 display_on() {
@@ -87,14 +87,11 @@ display_on() {
     elif echo "${UI_SERVICE}" | grep "weston"; then
       weston-dpms -m on
     fi
-  else
-    # DPMS disabled, just turn on the backlight
-    ${DEBUG} && log $0 "Backlight on"
-
-    for BL_POWER_DEVICE in "${BL_POWER_DEVICES[@]}"; do
-      echo 0 > "${BL_POWER_DEVICE}"
-    done
   fi
+  ${DEBUG} && log $0 "Backlight on"
+  for BL_POWER_DEVICE in "${BL_POWER_DEVICES[@]}"; do
+    echo 0 > "${BL_POWER_DEVICE}"
+  done
 }
 
 mute_audio() {