From 91eee14bcd2447d78ad00e3de9d4380e423cb897 Mon Sep 17 00:00:00 2001
From: Ray Strode <rstrode@redhat.com>
Date: Mon, 24 Sep 2018 10:53:53 -0400
Subject: [PATCH 6/7] daemon: ensure is-initial bit is transferred to new login
 screen at logout

At the moment, when a user logs out we call sync_seats to restart the
login screen. sync_seats doesn't know whether or not vt1 is occupied.

This commit changes the code to call the more targeted `create_display`
function, which we can inform of vt1's availability by the is_initial
flag.
---
 daemon/gdm-local-display-factory.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/daemon/gdm-local-display-factory.c b/daemon/gdm-local-display-factory.c
index cf852b55a..9a07f03ed 100644
--- a/daemon/gdm-local-display-factory.c
+++ b/daemon/gdm-local-display-factory.c
@@ -257,70 +257,68 @@ on_display_status_changed (GdmDisplay             *display,
         char            *session_type = NULL;
         char            *session_class = NULL;
         gboolean         is_initial = TRUE;
         gboolean         is_local = TRUE;
 
         num = -1;
         gdm_display_get_x11_display_number (display, &num, NULL);
 
         store = gdm_display_factory_get_display_store (GDM_DISPLAY_FACTORY (factory));
 
         g_object_get (display,
                       "seat-id", &seat_id,
                       "is-initial", &is_initial,
                       "is-local", &is_local,
                       "session-type", &session_type,
                       "session-class", &session_class,
                       NULL);
 
         status = gdm_display_get_status (display);
 
         g_debug ("GdmLocalDisplayFactory: display status changed: %d", status);
         switch (status) {
         case GDM_DISPLAY_FINISHED:
                 /* remove the display number from factory->priv->used_display_numbers
                    so that it may be reused */
                 if (num != -1) {
                         g_hash_table_remove (factory->priv->used_display_numbers, GUINT_TO_POINTER (num));
                 }
                 gdm_display_store_remove (store, display);
 
-                /* if this is a local display, do a full resync.  Only
-                 * seats without displays will get created anyway.  This
-                 * ensures we get a new login screen when the user logs out,
-                 * if there isn't one.
+                /* if this is a local display, recreate the display so
+                 * a new login screen comes up if one is missing.
                  */
                 if (is_local && g_strcmp0 (session_class, "greeter") != 0) {
                         /* reset num failures */
                         factory->priv->num_failures = 0;
 
-                        gdm_local_display_factory_sync_seats (factory);
+                        create_display (factory, seat_id, session_type, is_initial);
                 }
                 break;
         case GDM_DISPLAY_FAILED:
                 /* leave the display number in factory->priv->used_display_numbers
                    so that it doesn't get reused */
                 gdm_display_store_remove (store, display);
 
                 /* Create a new equivalent display if it was static */
                 if (is_local) {
 
                         factory->priv->num_failures++;
 
                         if (factory->priv->num_failures > MAX_DISPLAY_FAILURES) {
                                 /* oh shit */
                                 g_warning ("GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors");
                         } else {
 #ifdef ENABLE_WAYLAND_SUPPORT
                                 if (g_strcmp0 (session_type, "wayland") == 0) {
                                         g_free (session_type);
                                         session_type = NULL;
                                 }
 
 #endif
                                 create_display (factory, seat_id, session_type, is_initial);
                         }
                 }
                 break;
         case GDM_DISPLAY_UNMANAGED:
                 break;
         case GDM_DISPLAY_PREPARED:
-- 
2.19.0