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Logs

Live device logs for runtime diagnostics.

The Logs tab streams text output from the device so you can debug service failures, stream issues, and OS-level problems without SSH.

Log Sources​

Logs are grouped by source type. Common built-in sources include:

  • System journal (journald)
  • Kernel (dmesg)
  • Helios services (helios-api.service, helios-engine.service, helios-peripherals.service)
  • Optional file sources when present (for example /var/log/syslog)

The source picker also shows service status for systemd units (for example active/running vs failed).

Streaming Controls​

The Logs tab is a live stream with a local buffer.

  • Tail: how many existing lines to request initially.
  • Follow: keep streaming new lines as they arrive.
  • Pause/Resume: stops or resumes the live stream.
  • Clear: clears the local buffer.

Filter Vs Find​

  • Filter: live substring filter applied as new lines arrive (use this to reduce noise while the stream continues).
  • Find: searches within the current buffer and lets you jump Prev/Next between matches.

Download​

Use Download to fetch logs as a file from the device (useful for support tickets and offline analysis). The downloaded data comes from the device log source, not just what is currently in your on-screen buffer.

Troubleshooting Tips​

  • If a camera stream is failing to start or pipelines are unhealthy, start with helios-engine.service.
  • If the UI is failing to load data or API calls are erroring, check helios-api.service.
  • If I2C/IMU/peripheral inventory is missing, check helios-peripherals.service and kernel logs (dmesg).