Package: cinnamon-common Version: 6.6.9-2 Severity: normal cinnamon-common ships the "Cinnamon on Wayland (Experimental)" session (`/usr/share/wayland-sessions/cinnamon-wayland.desktop` and the matching `cinnamon-wayland.session`), but nothing in the Cinnamon packaging pulls xwayland in — it only appears in the build dependencies of muffin, for the test suite. With `apt-get install -s`, on unstable and on trixie alike, neither `cinnamon` nor `cinnamon-desktop-environment` nor `task-cinnamon-desktop` installs it, recommends included, while `task-gnome-desktop` does.
Without XWayland that session comes up with a black desktop. DISPLAY is exported into the session all the same, so nemo-desktop — an X11 client — dies at once with "Cannot open display", and with it go the wallpaper, the desktop icons and the desktop context menu. Installing the xwayland package and logging back in gives a normal desktop; I checked before and after in a clean Debian 13 VM. This is also what bug #1113913 ran into, where the black desktop was mistaken for a side effect of enabling the on-screen keyboard. GNOME puts the relationship in the same place: gnome-session, the Architecture: all package shipping `/usr/share/wayland-sessions/gnome.desktop`, has a plain `Depends: xwayland`. kwin-wayland depends on it too and weston recommends it, while libmutter only carries a Breaks — so it is the session package that declares it, not the compositor library. cinnamon-common is our equivalent, and Architecture: all as well. A Recommends rather than a Depends looks right here: the Wayland session is still experimental and the X11 one has no use for XWayland.
