This extension enables the hidden screen expanding functionality of gnome 42
git clone https://github.com/free-bots/extended-screen
cd ./extended-screen
cp -r ./extended-screen@free-bots.github.io ~/.local/share/gnome-shell/extensions/
Please make sure gnome-remote-desktop is installed and remote-desktop is enabled!
For archlinux:
sudo pacman -S gnome-remote-desktop