[gnome-settings-daemon/gnome-3-8] power: Force updating screen config when output is disconnected

[Bastien Nocera <hadess src gnome org>]

commit 2af30cc9ab334aaf151c28f412c7068a79ff5a83
Author: Bastien Nocera <hadess hadess net>
Date:   Fri Apr 25 09:16:40 2014 +0200

    power: Force updating screen config when output is disconnected
    
    When an output is disconnected, it's possible that the XRandR
    configuration doesn't actually change, and thus doesn't emit
    the "changed" signal. To work-around that, also capture the
    output-connected and output-disconnected signals and go through
    a forced refresh.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1081093

 plugins/power/gsd-power-manager.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/plugins/power/gsd-power-manager.c b/plugins/power/gsd-power-manager.c
index 645df66..47bf63a 100644
--- a/plugins/power/gsd-power-manager.c
+++ b/plugins/power/gsd-power-manager.c
@@ -3325,6 +3325,13 @@ on_randr_event (GnomeRRScreen *screen, gpointer user_data)
         setup_inhibit_lid_switch_timer (manager);
 }
 
+static void
+on_randr_connection_event (GnomeRRScreen *screen, GnomeRROutput *output, gpointer user_data)
+{
+        gnome_rr_screen_refresh (screen, NULL);
+        on_randr_event (screen, user_data);
+}
+
 #ifdef GSD_MOCK
 static gboolean
 received_sigusr2 (GsdPowerManager *manager)
@@ -3519,6 +3526,8 @@ gsd_power_manager_start (GsdPowerManager *manager,
 
         /* set up the screens */
         g_signal_connect (manager->priv->rr_screen, "changed", G_CALLBACK (on_randr_event), manager);
+        g_signal_connect (manager->priv->rr_screen, "output-connected", G_CALLBACK 
(on_randr_connection_event), manager);
+        g_signal_connect (manager->priv->rr_screen, "output-disconnected", G_CALLBACK 
(on_randr_connection_event), manager);
         on_randr_event (manager->priv->rr_screen, manager);
 
 #ifdef GSD_MOCK