fix(flatpak): ask for the X11 socket only as a fallback

CHANGELOG.md

@@ -6,6 +6,11 @@ GitHub are taken from the matching section here.
 
 ## [Unreleased]
 
+### Changed
+
+- The Flatpak build asks for the X11 socket only when there is no Wayland
+  session, as before 0.3.3.
+
 ## [0.3.3] - 2026-10-04
 
 ### Added
@@ -44,9 +49,6 @@ GitHub are taken from the matching section here.
   systems whose GL setup GTK could not use.
 - Fixed a crash when Roblox's saved dark or light theme setting was missing or
   damaged.
-- The Flatpak build now detects an NVIDIA driver from inside its sandbox, so it
-  uses X11 instead of native Wayland where both are available. This avoids
-  Wayland hangs and display disconnects.
 
 ## [0.3.2] - 2026-09-29
 

packaging/flatpak/io.github.CoderDayton.nightcap.json

@@ -9,7 +9,7 @@
     "--share=ipc",
     "--share=network",
     "--socket=wayland",
-    "--socket=x11",
+    "--socket=fallback-x11",
     "--socket=pulseaudio",
     "--device=dri",
     "--talk-name=com.feralinteractive.GameMode",

packaging/io.github.CoderDayton.nightcap.metainfo.xml

@@ -67,7 +67,6 @@
           <li>Going to another page in the web view no longer closes it.</li>
           <li>Clicking while typing no longer closes the text box.</li>
           <li>Fixed the sky showing the wrong textures.</li>
-          <li>The Flatpak build on NVIDIA now uses X11 to avoid Wayland hangs.</li>
         </ul>
       </description>
     </release>

tests/flatpak_packaging_test.sh

@@ -37,14 +37,14 @@ finish_args = set(manifest["finish-args"])
 required_permissions = {
     "--share=network",
     "--socket=wayland",
-    "--socket=x11",
+    "--socket=fallback-x11",
     "--socket=pulseaudio",
     "--device=dri",
     "--filesystem=xdg-run/discord-ipc-0:rw",
 }
 assert required_permissions <= finish_args
-# Keep NVIDIA's XWayland fallback available even when Wayland is present.
-assert "--socket=fallback-x11" not in finish_args
+# X11 is only a fallback; Wayland sessions get no X11 socket.
+assert "--socket=x11" not in finish_args
 assert not any(argument.startswith("--filesystem=host") for argument in finish_args)
 assert not any(argument == "--filesystem=home" for argument in finish_args)