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Port Access Permission

If you can’t find the port when launching the Ubuntu HMI:
  • Method 1: Add the current user to the dialout group
    After execution, apply the permissions:
    • Current terminal only: newgrp dialout
    • System-wide: sudo reboot
  • Method 2: Launch the HMI with sudo

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Display Scaling Warning

If a display scaling warning appears during startup, the system display scaling ratio is greater than 100%. Adjust the display scaling to 100% (1:1) in your system settings, then restart the HMI.