Hi,
If clamshell mode isn't working with your MacBook Air, ensure your MacBook Air is plugged into a power source and connected to the external monitor.Also, verify the power adapter is connected directly to the MacBook Air and not through a hub. Finally, make sure the MacBook Air is configured to prevent automatic sleeping when the display is off, which can be set in System Settings > Battery > Options.
Troubleshooting Steps:
- Power and Connectivity:
- Plug the MacBook Air directly into the power adapter.
- Ensure the external monitor is properly connected.
- Check Display Settings:
- In System Settings > Displays, verify the external monitor is recognized.
- If using a DisplayLink adapter, ensure it is correctly installed and configured.
- Prevent Automatic Sleeping:
- Go to System Settings > Battery > Options.
- Toggle on "Prevent automatic sleeping on power adapter when the display is off".
- Test with Different Monitors/Adapters:
- If the issue persists, try a different external monitor and/or adapter.
- Update macOS:
- Ensure your macOS is up to date.
- Check for Software Issues:
- Try starting the Mac in Safe Mode to rule out software conflicts.
- If you are using a monitor driver, try uninstalling it and reinstalling the latest version.
- Consider a Dock:
- If you are using a USB-C hub or dock, try a different one to see if that resolves the issue.
Note: Clamshell mode requires the MacBook Air to be connected to a power source and the lid closed. Some models may also require a specific refresh rate setting (e.g., 60Hz) for clamshell mode to work properly, as mentioned in some forum posts.
