From 5bdc464aa6b15af1cf310427c360351db83388da Mon Sep 17 00:00:00 2001 From: Rui Matos Date: Mon, 4 Jun 2018 16:35:04 -0400 Subject: [PATCH] monitor-manager-xrandr: Force an update when resuming from suspend The stack below us isn't as reliable as we'd like and in some cases doesn't generate RRScreenChangeNotify events when e.g. resuming a laptop on a dock, meaning that we'd miss newly attached outputs. --- src/backends/meta-gpu.c | 7 ++ src/backends/meta-gpu.h | 2 + src/backends/x11/meta-gpu-xrandr.c | 26 ++++- .../x11/meta-monitor-manager-xrandr.c | 96 +++++++++++++++++-- 4 files changed, 121 insertions(+), 10 deletions(-) diff --git a/src/backends/meta-gpu.c b/src/backends/meta-gpu.c index 3577391e5..946f72387 100644 --- a/src/backends/meta-gpu.c +++ b/src/backends/meta-gpu.c @@ -64,6 +64,13 @@ meta_gpu_has_hotplug_mode_update (MetaGpu *gpu) return FALSE; } +void +meta_gpu_poll_hardware (MetaGpu *gpu) +{ + if (META_GPU_GET_CLASS (gpu)->poll_hardware) + META_GPU_GET_CLASS (gpu)->poll_hardware (gpu); +} + gboolean meta_gpu_read_current (MetaGpu *gpu, GError **error) diff --git a/src/backends/meta-gpu.h b/src/backends/meta-gpu.h index 4badcbd26..3cec8e5b0 100644 --- a/src/backends/meta-gpu.h +++ b/src/backends/meta-gpu.h @@ -35,12 +35,14 @@ struct _MetaGpuClass gboolean (* read_current) (MetaGpu *gpu, GError **error); + void (* poll_hardware) (MetaGpu *gpu); }; int meta_gpu_get_kms_fd (MetaGpu *gpu); const char * meta_gpu_get_kms_file_path (MetaGpu *gpu); +void meta_gpu_poll_hardware (MetaGpu *gpu); gboolean meta_gpu_read_current (MetaGpu *gpu, GError **error); diff --git a/src/backends/x11/meta-gpu-xrandr.c b/src/backends/x11/meta-gpu-xrandr.c index 14b46d530..add80c0d2 100644 --- a/src/backends/x11/meta-gpu-xrandr.c +++ b/src/backends/x11/meta-gpu-xrandr.c @@ -44,6 +44,8 @@ struct _MetaGpuXrandr int max_screen_width; int max_screen_height; + + gboolean need_hardware_poll; }; G_DEFINE_TYPE (MetaGpuXrandr, meta_gpu_xrandr, META_TYPE_GPU) @@ -81,6 +83,14 @@ get_xmode_name (XRRModeInfo *xmode) return g_strdup_printf ("%dx%d", width, height); } +static void +meta_gpu_xrandr_poll_hardware (MetaGpu *gpu) +{ + MetaGpuXrandr *gpu_xrandr = META_GPU_XRANDR (gpu); + + gpu_xrandr->need_hardware_poll = TRUE; +} + static gboolean meta_gpu_xrandr_read_current (MetaGpu *gpu, GError **error) @@ -148,8 +158,18 @@ meta_gpu_xrandr_read_current (MetaGpu *gpu, monitor_manager->screen_width = WidthOfScreen (screen); monitor_manager->screen_height = HeightOfScreen (screen); - resources = XRRGetScreenResourcesCurrent (xdisplay, - DefaultRootWindow (xdisplay)); + if (gpu_xrandr->need_hardware_poll) + { + resources = XRRGetScreenResources (xdisplay, + DefaultRootWindow (xdisplay)); + gpu_xrandr->need_hardware_poll = FALSE; + } + else + { + resources = XRRGetScreenResourcesCurrent (xdisplay, + DefaultRootWindow (xdisplay)); + } + if (!resources) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, @@ -282,6 +302,7 @@ meta_gpu_xrandr_finalize (GObject *object) static void meta_gpu_xrandr_init (MetaGpuXrandr *gpu_xrandr) { + gpu_xrandr->need_hardware_poll = TRUE; } static void @@ -293,4 +314,5 @@ meta_gpu_xrandr_class_init (MetaGpuXrandrClass *klass) object_class->finalize = meta_gpu_xrandr_finalize; gpu_class->read_current = meta_gpu_xrandr_read_current; + gpu_class->poll_hardware = meta_gpu_xrandr_poll_hardware; } diff --git a/src/backends/x11/meta-monitor-manager-xrandr.c b/src/backends/x11/meta-monitor-manager-xrandr.c index c6eb4b6aa..26dccb247 100644 --- a/src/backends/x11/meta-monitor-manager-xrandr.c +++ b/src/backends/x11/meta-monitor-manager-xrandr.c @@ -60,6 +60,10 @@ struct _MetaMonitorManagerXrandr Display *xdisplay; int rr_event_base; int rr_error_base; + + guint logind_watch_id; + guint logind_signal_sub_id; + gboolean has_randr15; /* @@ -95,6 +99,8 @@ typedef struct _MetaMonitorXrandrData GQuark quark_meta_monitor_xrandr_data; #endif /* HAVE_RANDR15 */ +static void meta_monitor_manager_xrandr_update (MetaMonitorManagerXrandr *manager_xrandr); + Display * meta_monitor_manager_xrandr_get_xdisplay (MetaMonitorManagerXrandr *manager_xrandr) { @@ -966,6 +972,62 @@ meta_monitor_manager_xrandr_get_default_layout_mode (MetaMonitorManager *manager return META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL; } +static void +logind_signal_handler (GDBusConnection *connection, + const gchar *sender_name, + const gchar *object_path, + const gchar *interface_name, + const gchar *signal_name, + GVariant *parameters, + gpointer user_data) +{ + MetaMonitorManagerXrandr *manager_xrandr = user_data; + gboolean suspending; + + if (!g_str_equal (signal_name, "PrepareForSleep")) + return; + + g_variant_get (parameters, "(b)", &suspending); + if (!suspending) + { + meta_gpu_poll_hardware (manager_xrandr->gpu); + meta_monitor_manager_xrandr_update (manager_xrandr); + } +} + +static void +logind_appeared (GDBusConnection *connection, + const gchar *name, + const gchar *name_owner, + gpointer user_data) +{ + MetaMonitorManagerXrandr *manager_xrandr = user_data; + + manager_xrandr->logind_signal_sub_id = g_dbus_connection_signal_subscribe (connection, + "org.freedesktop.login1", + "org.freedesktop.login1.Manager", + "PrepareForSleep", + "/org/freedesktop/login1", + NULL, + G_DBUS_SIGNAL_FLAGS_NONE, + logind_signal_handler, + manager_xrandr, + NULL); +} + +static void +logind_vanished (GDBusConnection *connection, + const gchar *name, + gpointer user_data) +{ + MetaMonitorManagerXrandr *manager_xrandr = user_data; + + if (connection && manager_xrandr->logind_signal_sub_id > 0) + g_dbus_connection_signal_unsubscribe (connection, manager_xrandr->logind_signal_sub_id); + + manager_xrandr->logind_signal_sub_id = 0; +} + static void meta_monitor_manager_xrandr_constructed (GObject *object) { @@ -1024,12 +1086,23 @@ meta_monitor_manager_xrandr_finalize (GObject *object) g_hash_table_destroy (manager_xrandr->tiled_monitor_atoms); g_free (manager_xrandr->supported_scales); + if (manager_xrandr->logind_watch_id > 0) + g_bus_unwatch_name (manager_xrandr->logind_watch_id); + manager_xrandr->logind_watch_id = 0; + G_OBJECT_CLASS (meta_monitor_manager_xrandr_parent_class)->finalize (object); } static void meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr) { + manager_xrandr->logind_watch_id = g_bus_watch_name (G_BUS_TYPE_SYSTEM, + "org.freedesktop.login1", + G_BUS_NAME_WATCHER_FLAGS_NONE, + logind_appeared, + logind_vanished, + manager_xrandr, + NULL); } static void @@ -1076,9 +1149,8 @@ is_xvnc (MetaMonitorManager *manager) return FALSE; } -gboolean -meta_monitor_manager_xrandr_handle_xevent (MetaMonitorManagerXrandr *manager_xrandr, - XEvent *event) +static void +meta_monitor_manager_xrandr_update (MetaMonitorManagerXrandr *manager_xrandr) { MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_xrandr); MetaGpuXrandr *gpu_xrandr; @@ -1087,11 +1159,6 @@ meta_monitor_manager_xrandr_handle_xevent (MetaMonitorManagerXrandr *manager_xra gboolean is_our_configuration; unsigned int timestamp; - if ((event->type - manager_xrandr->rr_event_base) != RRScreenChangeNotify) - return FALSE; - - XRRUpdateConfiguration (event); - meta_monitor_manager_read_current_state (manager); gpu_xrandr = META_GPU_XRANDR (manager_xrandr->gpu); @@ -1126,6 +1193,19 @@ meta_monitor_manager_xrandr_handle_xevent (MetaMonitorManagerXrandr *manager_xra meta_monitor_manager_xrandr_rebuild_derived (manager, config); } +} + +gboolean +meta_monitor_manager_xrandr_handle_xevent (MetaMonitorManagerXrandr *manager_xrandr, + XEvent *event) +{ + + if ((event->type - manager_xrandr->rr_event_base) != RRScreenChangeNotify) + return FALSE; + + XRRUpdateConfiguration (event); + + meta_monitor_manager_xrandr_update (manager_xrandr); return TRUE; } -- 2.20.1