How to enable an extended DisplayLink display on macOS 10.13.4 with 4.3 beta 4

This article applies to macOS 10.13.4 with 4.3 beta 4 release from DisplayLink. This release supports one extended display using Apple's AirPlay.

To setup the DisplayLink driver to use AirPlay:
  1. Uninstall all previous versions of DisplayLink driver and reboot.
  2. Install the latest 4.3 beta from our download page.
  3. Restart your computer and login.
  4. Make sure that “Show mirroring options in the menu bar when available” is checked in Display preferences.
  5. Accept the DisplayLinkUserAgent accessibility dialogue box which opens System Preferences -> Security&Privacy -> Privacy -> Accessibility.
  6. Allow DisplayLinkUserAgent application to control your computer.
  7. Connect your DisplayLink enabled device.
  8. You should now see the Airplay Icon in your systems tray.
  9. Click "Use as Separate Display" to switch to extended desktop mode.



In Display preferences you need to have “Show mirroring options in the menu bar when available” checkbox ticked. This is requirement for automated AirPlay enabling when using accessibility, without this Airplay Icon in your systems tray does not show up.

Limitations

The following limitations exist with this solution:

  • AirPlay does not support rotation. It will not be possible to rotate any display with this solution.
  • Clam shell mode (lid closed) does not work and the desktop will go to sleep.
  • The display resolutions available through AirPlay by default are 720p (1280x720) and 1080p (1920x1080). More resolutions are available if you click on "Scaled" while holding down the option key:


  • If you have multiple DisplayLink displays connected, there is no interface to choose which display becomes your Airplay display. If the wrong display is selected, then disconnect this display to prevent it being the AirPlay display.
  • Currently, after logging in, it will be necessary to unplug and replug the DisplayLink device for AirPlay to work again.
  • On systems with non-standard firewall settings, firewall might require to allow incoming network connections for “DisplayLinkAirPlayBridge” application.



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