Hello,
Thank you for contacting our support.
If you are using a DisplayLink Manager v1.x then its current limitation is lack of Clamshell mode support. This functionality is available in classic drivers only for Catalina. The only workaround we have for Big Sur is to keep the laptop lid open.
We are working with the OS vendor to add this functionality to the future releases of the software but it is not available just yet.
Please check the following article for more information:
https://support.displaylink.com/know...ntroduction-in
Best regards,
Katarzyna