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Luna Display Bug: Can’t Connect in Computer-to-Mac Mode?

Running into connection issues in Computer-to-Mac mode? It might be caused by a known bug affecting the connection filter.

Updated over 2 months ago

Quick Answer

🐞 Bug Alert: Can’t Connect in Computer-to-Mac Mode?

If you're unable to connect Luna Display in Computer-to-Mac mode, it might be due to a known bug where your secondary Mac switches to an incompatible connection filter.

Try this 3-step workaround:

  • Check the connection filter on your primary device

  • Reset Luna on your secondary Mac

  • Plug in your cable before launching Luna to make sure it's used as the main connection.

  • Relaunch Luna on both devices and try connecting again

⚠️ Heads up: This workaround doesn’t work in all cases. If it fails, reach out to Astropad Support for help.

Getting Started

🛠 Step 1: Check the Connection Filter on Your Primary Device

🍏 Mac Users

  • Open Luna Display on your primary Mac

  • Go to Settings > Mac-to-Mac

  • Set the "Connection Filter" to Allow any network interface (default)

Windows PC Users

  • Open Luna Display on your PC

  • Go to Preferences > Connectivity

  • Set the "Connection Filter" to Allow any network interface (default)

♻️ Step 2: Reset Luna on Your Secondary Mac

  1. Quit Luna Display on both devices

  2. On your secondary Mac:

    • Open Finder

    • Go to: Go > Go to Folder

    • Paste this path and press Return:

      ~/Library/Application Support/astropad/LunaSecondary/
    • Delete any files with state_sync in the name

🔁 Step 3: Reconnect

Launch Luna on both your primary and secondary Macs again, and try connecting. This should reset the pairing and allow the connection to complete.

Still stuck? Get in touch with our Support team and we’ll help you troubleshoot!

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