When you troubleshoot issues with an MST hub, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
To test your setup components, try the following:
Use the video cables, video source, video destination, and MST hub in another setup to see if the problem is with the components or the setup.
Use a different video cable, video source, video destination, and MST hub in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.
Note: Some 4K displays, even if set to 1920x1080 resolution, will still reserve the full 4K bandwidth. As a result, this may prevent some displays from outputting a video signal or prevent certain resolutions from being available on the other displays.
When you test your cables, it is recommended that you do the following:
Test each cable individually.
Use short cables when you are testing.
When you test the MST hub with your computer system, do the following:
Make sure that the computer/graphics adapter is MST compatible. For more information, refer to the following FAQ: http://www.startech.com/faq/mst-hubs-gpu-compatibility.
Make sure that the latest graphics drivers are installed. The latest drivers are available on the website of the manufacturer of the graphics adapter.
Use compatible adapters. For example, DisplayPort to HDMI and not HDMI to DisplayPort.
Note: Drivers are not required for the MST hub.
To check to see if Windows is detecting the monitor, on a computer that is running a version of Windows 8 or Windows 10, do the following:
To check to see if Windows is detecting the monitor, on a computer that is running a version of Windows 7, do the following: