From 4baa4d95a4cc3d435eadbfa89ffae69a224ef482 Mon Sep 17 00:00:00 2001
From: Martin Milata <martin@martinmilata.cz>
Date: Thu, 11 Apr 2024 21:40:33 +0200
Subject: [PATCH] fix(core): fix display fatal error screen (T3T1)

[no changelog]
---
 core/embed/rust/src/ui/model_mercury/mod.rs     | 5 +++++
 core/embed/rust/src/ui/model_mercury/screens.rs | 1 +
 2 files changed, 6 insertions(+)

diff --git a/core/embed/rust/src/ui/model_mercury/mod.rs b/core/embed/rust/src/ui/model_mercury/mod.rs
index 390474919..78d03001e 100644
--- a/core/embed/rust/src/ui/model_mercury/mod.rs
+++ b/core/embed/rust/src/ui/model_mercury/mod.rs
@@ -21,6 +21,11 @@ impl UIFeaturesCommon for ModelMercuryFeatures {
         crate::ui::display::fade_backlight_duration(theme::BACKLIGHT_DIM, 150);
     }
 
+    fn backlight_on() {
+        #[cfg(feature = "backlight")]
+        crate::ui::display::set_backlight(theme::BACKLIGHT_NORMAL);
+    }
+
     const SCREEN: Rect = constant::SCREEN;
 
     fn screen_fatal_error(title: &str, msg: &str, footer: &str) {
diff --git a/core/embed/rust/src/ui/model_mercury/screens.rs b/core/embed/rust/src/ui/model_mercury/screens.rs
index 8cbc9c73c..5ccc874db 100644
--- a/core/embed/rust/src/ui/model_mercury/screens.rs
+++ b/core/embed/rust/src/ui/model_mercury/screens.rs
@@ -9,6 +9,7 @@ pub fn screen_fatal_error(title: &str, msg: &str, footer: &str) {
     let mut frame = ErrorScreen::new(title.into(), msg.into(), footer.into());
     frame.place(constant::screen());
     frame.paint();
+    display::refresh();
 }
 
 pub fn screen_boot_stage_2() {