Hi, Brian Hope_51!
Thanks for reaching out to Microsoft Community and posting your concerns.
If one port on your hub/dock, it is likely an issue with the cable or the dock itself. It could also be compatibility issues.
Please make sure you use an active HDMI cable that will allow a monitor to be displayed on your dock.
When it comes to troubleshooting the Aukey USB-C hub, kindly check with Aukey's Support Team.
For troubleshooting on your Surface Book 2, you may check this page to help you out: https://support.microsoft.com/help/4023496/
This page discusses how to troubleshoot Surface devices connecting to a second screen.
On your device, kindly perform these basic troubleshooting steps:
· Check for Windows Update:
Go to Settings > Update & Security > Windows Update > Check for Updates
Please restart your device to apply the updates.
· Run Surface Diagnostic Toolkit and make sure to complete the tasks.
· Force shutdown the device and restart.
1.) Press and hold the power button until the screen turns off (about 10 seconds), then release the power button.
2.) Press and release the power button to turn your Surface back on. You should see the Surface logo.
If that doesn't work, use this two-button shutdown process to make sure your Surface turns off completely:
1.) Press and hold the power button on your Surface until the screen turns off (about 30 seconds), then release it.
2.) Press and hold the volume-up button and the power button at the same time until the screen turns off (about 15 seconds), then release both.
The screen may flash the Surface logo, but continue holding the buttons down for at least 15 seconds.
3.) After you release the buttons, wait 10 seconds.
4.) Press and release the power button to turn your Surface back on. You should see the Surface logo.
If this answers your question, please let our Community know by marking this post as an answer. Otherwise, don't hesitate to respond to this thread if there’s anything else that needs to be addressed.
Kind regards,
Janette_Z