🛠 Configure the three video outputs on BIWCL-PAT

Objectifs

This tutorial guides you through activating and configuring the three independent video outputs of the BIWCL-PAT board. Mastering this management is crucial for interactive kiosks or industrial dashboards requiring multiple displays.

Necessary Equipment

• BIWCL-PAT board with Intel Core Series 3 SoC.
• A 4K-capable HDMI monitor or standard monitor.
• A DisplayPort 1.4 monitor.
• An LVDS display or an LVDS-HDMI converter if you don't have a native panel.
• A pre-installed operating system (Windows 11 IoT or Ubuntu 24.04).

Steps

``bash xrandr --output HDMI-1 --auto --left-of DP-1 xrandr --output DP-1 --auto ``

1. Physical Preparation: Ensure the 9-24V DC power supply is correctly connected. Connect the HDMI and DisplayPort monitors. For the LVDS output, ensure internal wiring is secure if using an industrial panel.
2. System Boot: Power on the board. Under Ubuntu, the integrated Intel driver should automatically detect the screens. Under Windows 11 IoT, verify that Intel graphics drivers are installed.
3. Linux Configuration: Open a terminal. Use the xrandr command to list available connectors. You will likely see names like HDMI-1, DP-1, and potentially an LVDS connector (sometimes named eDP-1 or specific depending on BIOS).
4. Screen Activation: If a screen is off, activate it with the following command (adjust names according to xrandr):
5. LVDS Management: The LVDS output is often configured via BIOS or manufacturer-specific tools. Under Linux, it may require kernel parameters. Check BIOS "Boot Display" options to select LVDS priority if necessary.
6. Resolution Testing: Set the LVDS resolution to a maximum of 1920x1200. For HDMI and DP, you can push up to 4K if your monitors allow it.

Verification

Display a full-screen window on each monitor. Move a window from one screen to another to check desktop continuity. If one screen remains black, check cables and xrandr commands to confirm the port is "connected".

Going Further

Explore screen sleep tools to save energy, or configure synchronized video walls for complex dynamic signage applications.