blank screen on gnome-remote-desktop

[Antonio M]

My Fedora network is:
a) Pcdesktop
b) laptop

Usually I run wayland, then I can share the laptop to the desktop.
If I try to share the desktop to the laptop after password request i get a
blak screen (but the mouse arrow is visible). If I start a Xorg session I
can share the desktop to the laptop even if it is ugly. any hint???
Antonio Montagnani

Linux Fedora 32
da/from Gmail