The issue with the lack of rotation option on the secondary screen of the monitor
 

Hello, may I ask if my secondary screen monitor cannot be recognized when connected to the HDMI cable after being powered on? After unplugging the power, only the HDMI cable is left connected, and the software can recognize the secondary screen monitor. What is the reason for this? I am using the Belkin displaylink expansion dock, and now I cannot use the secondary screen monitor. If I use the secondary screen vertically as the main screen, the delay will be quite noticeable. May I ask if there is any solution?

Hello,
Can you please share more details I will need logfiles to check the feedback from the driver. For instructions on how to gather the logfiles please navigate to the following article How to report macOS issues to DisplayLink


And aslo for speedy support please send an email with the logfiles and detailed problem description to: technical-enquiries@synaptics.com