From adde3dd1c66eade33d8ad8abf40003e1088b74fe Mon Sep 17 00:00:00 2001
From: Zitao <145678024+ZitaoTech@users.noreply.github.com>
Date: Tue, 26 Nov 2024 09:58:04 +0100
Subject: [PATCH] Update README.md

---
 Screen/README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Screen/README.md b/Screen/README.md
index 80ec7fb..42b16e5 100644
--- a/Screen/README.md
+++ b/Screen/README.md
@@ -75,3 +75,13 @@ Now you can insert the TF card in to the slot and your HackberryPi will run Retr
 DietPi is an extremely lightweight Debian OS, highly optimised for minimal CPU and RAM resource usage. The instruction is made by [Bjoern Franck](https://github.com/bjoernfranck)  
 You can view the tutorial at this [page](https://github.com/bjoernfranck/HackberryPi/tree/main/DietPi)  
 ![image](https://github.com/user-attachments/assets/31e83c06-085c-4b7a-b38f-0236433038fb)
+
+# Troubleshoot  
+![image](https://github.com/user-attachments/assets/72e6eebb-46fd-4443-887c-c18b7fc35222)
+You might found your display flickering or flashing like this on the picture. This happens when the display driver is powered but no image signal coming through.  
+It can usually happen when you flash a new SD card or wake up from screen blanking.  
+The display can recover itsself when you put the device running like 1 hour, but you need to disable screen blanking first.  
+Here are steps you need to do to disable screen blanking:  
+[On RaspberryPi OS](https://github.com/raspberrypi/documentation/blob/develop/documentation/asciidoc/computers/configuration/screensaver.adoc)  
+[On Kali](https://superuser.com/questions/1185747/how-do-i-disable-the-screensaver-lock-in-kali-linux)  
+