[mutter] monitor-config-manager: Don't include closed laptop panel in config key

[Jonas Ådahl <jadahl src gnome org>]

commit 62dedfbef3ae89e14faf79549763f66fbd114f0a
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri Nov 3 15:58:02 2017 +0800

    monitor-config-manager: Don't include closed laptop panel in config key
    
    When deriving the list of disabled monitors when creating new monitors
    configs, don't include the laptop panel if the lid is currently closed,
    as we consider the laptop panel nonexistent when the laptop lid is
    closed when it comes to configuration.
    
    The laptop panel connector(s) will either way be appropriately disabled
    anyway, as the field listing disabled monitors in the configuration do
    not affect actual CRTC/connector assignments.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=788915

 src/backends/meta-monitor-config-manager.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/backends/meta-monitor-config-manager.c b/src/backends/meta-monitor-config-manager.c
index d00aa6f..44ec494 100644
--- a/src/backends/meta-monitor-config-manager.c
+++ b/src/backends/meta-monitor-config-manager.c
@@ -1238,6 +1238,10 @@ meta_monitors_config_new (MetaMonitorManager           *monitor_manager,
       MetaMonitor *monitor = l->data;
       MetaMonitorSpec *monitor_spec;
 
+      if (meta_monitor_manager_is_lid_closed (monitor_manager) &&
+          meta_monitor_is_laptop_panel (monitor))
+        continue;
+
       monitor_spec = meta_monitor_get_spec (monitor);
       if (meta_logical_monitor_configs_have_monitor (logical_monitor_configs,
                                                      monitor_spec))