All plain black screen Issue on Display Running LVGL

General discussion
1

Hi Everyone,

All plain black screen appears on my display after initializing LVGL. The setup includes an STM32F429 microcontroller with an ILI9341 display driver, and Iam using LVGL version 8.3.
The screen remains blank, and no UI elements are rendered, though the backlight is functioning.

I have double-checked my display driver setup and ensured LVGL is initialized correctly, but the issue persists.

Has anyone faced a full black black screen problem? Any tips on debugging this or identifying if it’s a driver or LVGL configuration issue? please gave me suggestion , Thank you.

2

I’m experiencing the same issue on an ESP32 with an ST7789 display running the LVGL benchmark demo. The screen stays black, but I’ve verified that commands are being sent over SPI to fill the screen with black color.

Using the same configuration without LVGL, I can render color maps correctly on the display.

Has anyone found a solution to this issue? Any suggestions would be greatly appreciated.

The LVGL version is 9.2.2

Thank you!

3

I bought CrowPanel 7’. I have the same problem with the LVGL_Arduino demo. I read all the instructions and wrote them in this link :

https://docs.lvgl.io/master/details/integration/framework/arduino.html

but the screen of panel remain black :frowning: