diff --git a/src/backends/x11/meta-monitor-manager-xrandr.c b/src/backends/x11/meta-monitor-manager-xrandr.c index 21b9567c1..a8ac46772 100644 --- a/src/backends/x11/meta-monitor-manager-xrandr.c +++ b/src/backends/x11/meta-monitor-manager-xrandr.c @@ -140,6 +140,30 @@ meta_monitor_transform_from_xrandr_all (Rotation rotation) return ret; } +static gboolean +output_get_property_exists (MetaMonitorManagerXrandr *manager_xrandr, + MetaOutput *output, const char *propname) +{ + gboolean exists = FALSE; + Atom atom, actual_type; + int actual_format; + unsigned long nitems, bytes_after; + unsigned char *buffer; + + atom = XInternAtom (manager_xrandr->xdisplay, propname, False); + XRRGetOutputProperty (manager_xrandr->xdisplay, + (XID)output->winsys_id, + atom, + 0, G_MAXLONG, False, False, AnyPropertyType, + &actual_type, &actual_format, + &nitems, &bytes_after, &buffer); + + exists = (actual_type != None); + + XFree (buffer); + return exists; +} + static gboolean output_get_boolean_property (MetaMonitorManagerXrandr *manager_xrandr, MetaOutput *output, const char *propname) @@ -330,7 +354,7 @@ static gboolean output_get_hotplug_mode_update (MetaMonitorManagerXrandr *manager_xrandr, MetaOutput *output) { - return output_get_boolean_property (manager_xrandr, output, "hotplug_mode_update"); + return output_get_property_exists (manager_xrandr, output, "hotplug_mode_update"); } static char *