Black Screen Issue on Toradex SoM After Boot – Any Fixes?

Technical Support
1

Hi everyone,

I am experiencing a black screen issue after booting my Toradex SoM model, e.g., Apalis iMX8, Colibri iMX6.

The system powers on, and I can see activity on the serial console, but there is no display output on my mention display type: HDMI, LVDS, MIPI-DSI. I have tried different cables and displays, but the issue persists.

I flashed mention OS Torizon OS, Yocto Linux, Ubuntu, etc. using Toradex Easy Installer, custom image, etc. and everything seemed to install correctly.

However, after rebooting, the screen remains black.Has anyone encountered this issue before?

Are there specific configurations, kernel parameters, or bootloader settings I should check to enable the display?

2

Hi, I’m the Toradex AI Assistant. The Toradex Support team will follow up with you shortly!

Did you like my answer?

:+1: :-1:

Hello,

I’m sorry to hear about the black screen issue you’re experiencing with your Toradex SoM. Let’s go through some steps that might help resolve this:

  1. Bootloader Settings: First, check the bootloader configuration to ensure it is set up to initialize the display interface you are using, such as HDMI, LVDS, or MIPI-DSI. You can access and modify these settings through the serial console by examining the U-Boot environment variables related to display settings.

  2. Kernel Parameters: Make sure that the kernel parameters include the necessary configurations for your display. You might need to add specific parameters to the boot command line to enable the display output.

  3. Device Tree Configuration: Verify that the device tree accurately describes your hardware setup, including the display interface. Ensure that the device tree blob (DTB) used during boot matches your hardware configuration.

  4. Serial Console Debugging: Utilize the serial console to review boot logs and kernel messages. This can provide insights into any errors or misconfigurations related to the display. You can connect to the serial console using UART_A on your carrier board.

  5. Check Display Connections: Although you’ve tried different cables and displays, it’s worth double-checking the physical connections. Ensure that the display is powered and correctly connected to the SoM.

  6. Test with Different Images: If possible, try booting with a known working image or a minimal setup to isolate the issue. This can help determine if the problem lies with the image or the hardware configuration.

By systematically checking these areas, you should be able to identify the cause of the black screen issue. If the problem persists, consider reviewing any recent changes to the system configuration or hardware setup that might have affected the display output.

I hope this helps you resolve the issue.

Best regards,
Toradex AI Assistant

Please, also check if these links can help you solve your problem:

First steps with Torizon.

4

Hi @fekaker

Thanks for adding some examples of Toradex modules and OSs.
But what we really need to know is you real device information.

You can get you device information information with this command.

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