When you upgrade the DisplayLink Manager Graphics Connectivity App to a newer version on your macOS system, the older version will automatically quit. As a result, any monitors connected to a DisplayLink-based USB video adapter or docking station will stop working.
To resolve this issue, you need to manually start the new version of the DisplayLink Manager Graphics Connectivity App by double-clicking on the App's icon that can be found in the 'Applications' folder within the macOS Finder. This will restart the DisplayLink Manager Graphics Connectivity App, which will enable any monitors connected to a DisplayLink-based USB video adapter or docking station to start working again.
Please note that the information provided is only relevant to the new DisplayLink Manager. It does not apply to the older 'legacy' version of the DisplayLink driver for macOS.
To resolve this issue, you need to manually start the new version of the DisplayLink Manager Graphics Connectivity App by double-clicking on the App's icon that can be found in the 'Applications' folder within the macOS Finder. This will restart the DisplayLink Manager Graphics Connectivity App, which will enable any monitors connected to a DisplayLink-based USB video adapter or docking station to start working again.
Please note that the information provided is only relevant to the new DisplayLink Manager. It does not apply to the older 'legacy' version of the DisplayLink driver for macOS.