From 0a2e736ba52a473fdd43c93b989493a481f12158 Mon Sep 17 00:00:00 2001
From: pelgraine <140762863+pelgraine@users.noreply.github.com>
Date: Sat, 25 Jul 2026 16:53:53 +1000
Subject: [PATCH] Max backlight bugfix - light was occasionally still remaining
 on when the autolockscreen timer activated. Now turning off as it should

---
 examples/companion_radio/ui-new/UITask.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/examples/companion_radio/ui-new/UITask.cpp b/examples/companion_radio/ui-new/UITask.cpp
index 0362c14d..909f44f9 100644
--- a/examples/companion_radio/ui-new/UITask.cpp
+++ b/examples/companion_radio/ui-new/UITask.cpp
@@ -2656,6 +2656,10 @@ void UITask::lockScreen() {
   }
 #if defined(LilyGo_T5S3_EPaper_Pro)
   board.setBacklight(false);  // Save power (T5S3 backlight)
+#elif defined(LilyGo_TDeck_Pro_Max)
+  // MAX: IO41 frontlight stays lit otherwise, burning power behind the
+  // lock screen. Plain Pro V1.1 has no working frontlight to switch off.
+  if (board.isBacklightOn()) board.backlightOff();
 #endif
   _next_refresh = 0;  // Draw lock screen immediately
   _auto_off = millis() + 60000;  // 60s before display off while locked