Tks to this guide i have managed to make it work:
http://forum.attractmode.org/index.php?topic=1161.0Since i am using RPi4 and not windows, the conditions for my 2nd screen work are the following:
RPi4 with X
AttractMode build for X11
Configurations:
Configure> General > Window Mode - Fillscreen
Configure > General > Enable Multiple Monitors - Yes
Configure > Plug-ins > MultiMon > Yes
Click over MultiMon with the second screen connected, will appear more configurations. Mine are the following:
Enabled > Yes
Artwork > Wheel
X > 0
Y > 0
Height > 390
Width > 1280
Preserve aspect > Yes
If this additional configuration dont appear, try again, with the 2nd monitor connected or edit the attract.cfg directly replacing with the following text the multimon plugin config:
plugin MultiMon
enabled yes
param mon2_art wheel
param mon2_height 390
param mon2_preserve_aspect_ratio Yes
param mon2_width 1280
param mon2_x 0
param mon2_y 0