Viewing GUI Runs

Virtual/headless

Preflight starts Xvfb for the job. This mode is optimized for unattended execution; choose Virtual/observed when you want to watch the run in Remmina.

Virtual/observed

Preflight starts Xvfb and a localhost-only x11vnc viewer automatically. Open your saved Remmina tunnel after preflight starts: Marsad uses localhost:5901; ROG uses localhost:5900 only when explicitly targeted.

Physical/observed

Use this when you need to watch the app live. Log into the runner GUI first. Linux uses that desktop, web opens a headed browser, and Android opens the emulator/device window.

Auto

Auto uses a reachable visible GUI when one exists, otherwise it falls back to the virtual/headless behavior supported by the platform.