No response so far from the Windows community - maybe uk.d-i-y can help?

-------- Forwarded Message --------
Subject: Odd screensaver behaviour
Date: Sat, 20 Mar 2021 23:12:05 +0000
From: Roger Mills
Organization: Association of Revolting Peasants
Newsgroups: alt.comp.os.windows-10

I've just set up a new W10 desktop machine with two monitors - the main
one landscape for general use and the second one portrait for displaying
A4 sized documents in actual size. For obvious reasons, the monitors are
configured as "Extended these displays" rather than "Duplicate these
displays".

I've set up a screensaver in the form of a photo slide show. When the
portrait monitor is on the right and the screensaver cuts in, its screen
goes blank and the slideshow takes place on the main (landscape) monitor
- which is fine.

However, when the portrait monitor is on the left and the screensaver
cuts in, the photos are half on each monitor with black space outboard
of them.

Anyone come across this, and any suggestions for fixing it? [OK I could
put the portrait monitor on the right but I really *want* it on the left].
--
Cheers,
Roger