What is the issue?
- The main issue here is the portal you do not have the correct portals.
- Niri is not starting correctly.
- Portals are overidden by other portals or not starting at all .
Let’s address them one by one
1. For niri you only need these two(three) necessary portal to do screen sharing
xdg-desktop-portalxdg-desktop-portal-gnomexdg-desktop-portal-gtk
find these packages in your corresponding distro and install them.
2. to fix this you just have to run this on startup(tty)
# systemd
niri-session
# others
dbus-run-session niri --session
3. To address this issue,
- we are just going to create a config file to specifically tell these backend are going to be used for these tasks.
~/.config/xdg-desktop-portal
[preferred]
org.freedesktop.impl.portal.FileChooser=gnome;
org.freedesktop.impl.portal.ScreenCast=gnome;
org.freedesktop.impl.portal.Screenshot=gnome;
org.freedesktop.impl.portal.RemoteDesktop=gnome;
ref: niri wiki