Hello,
Cloning across adapters is not decided by DisplayLink driver.
The reason it started working could be because of a Windows Update for either the Intel graphics or an OS patch, or because you rely on software which wasn't running.
The normal way to change mode is Windows+P for "Projection".
If you use F8, then it could be using the Dell laptop hotkey and explain why you need to have the appropriate Dell software running.
Regards,
Alban
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