From d3213e6b805b50cc07c021ea089681e36ebd4284 Mon Sep 17 00:00:00 2001
From: NiLuJe <ninuje@gmail.com>
Date: Sat, 17 Apr 2021 19:30:23 +0200
Subject: [PATCH] UIManager: Follow the same ScreenSaver preparations than
 Generic's PowerEvent handler

(i.e., flash to white befor eimages).

Re #7519
---
 frontend/ui/uimanager.lua | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/frontend/ui/uimanager.lua b/frontend/ui/uimanager.lua
index 57fc71217..968253007 100644
--- a/frontend/ui/uimanager.lua
+++ b/frontend/ui/uimanager.lua
@@ -64,6 +64,12 @@ function UIManager:init()
         Screen:setRotationMode(Screen.ORIENTATION_PORTRAIT)
         local Screensaver = require("ui/screensaver")
         Screensaver:setup("poweroff", _("Powered off"))
+        if Device:hasEinkScreen() and Screensaver:modeIsImage() then
+            if Screensaver:withBackground() then
+                Screen:clear()
+            end
+            Screen:refreshFull()
+        end
         Screensaver:show()
         if Device:needsScreenRefreshAfterResume() then
             Screen:refreshFull()
@@ -83,6 +89,12 @@ function UIManager:init()
         Screen:setRotationMode(Screen.ORIENTATION_PORTRAIT)
         local Screensaver = require("ui/screensaver")
         Screensaver:setup("reboot", _("Rebooting…"))
+        if Device:hasEinkScreen() and Screensaver:modeIsImage() then
+            if Screensaver:withBackground() then
+                Screen:clear()
+            end
+            Screen:refreshFull()
+        end
         Screensaver:show()
         if Device:needsScreenRefreshAfterResume() then
             Screen:refreshFull()