How to Confirm the HDMI GPU Adapter is Working on Your Remote Mac Server

By default, every dedicated Mac server at MacStadium includes a headless HDMI adapter to enable GPU acceleration in macOS. This small accessory cause the operating system to believe that a display is attached, therefore making the GPU work harder to provide a smooth remote desktop experience.

It's easy to confirm that the GPU adapter is attached and working correctly.

  1. Within the remote desktop (running macOS), open Apple's System Preferences application.
  2. Click on Displays.
  3. The title of the window should now have changed from System Preferences to fit Headless.

If you're using the Scaled resolution settings, you should have options for up to 1080p on your remote desktop.

If you see something other than fit Headless (or suspect it's not working as expected), we request you open a remote hands support ticket for your local data center technicians to review and/or replace the existing GPU adapter.

This guide was written using Apple's Screen Sharing to connect with a remote Mac mini running macOS 10.12 Sierra. Your experience may differ slightly based on your software tools and versions.

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