@peemee WHOA! I wasn't expecting that. Dongle inserted, lid shut - the screen share has given me a wide screen desktop so, rather than getting the 11" native screen, it's nearly filling the 21" it's running on.
Wasn't without a couple of tense moments, as the screen went black, before it resized itself.
So, many thanks for the suggestion!
Welcome to thundertoot! A Mastodon Instance for 'straya