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            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - NV50: LightDM GTK+ Greeter Background - inconsistent display"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=89730#c37">Comment # 37</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - NV50: LightDM GTK+ Greeter Background - inconsistent display"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=89730">bug 89730</a>
              from <span class="vcard"><a class="email" href="mailto:pomidorabelisima@gmail.com" title="poma <pomidorabelisima@gmail.com>"> <span class="fn">poma</span></a>
</span></b>
        <pre>
Loading background bitmap is solved with:

<a href="https://git.gnome.org/browse/gtk+/commit/?id=a34a022">https://git.gnome.org/browse/gtk+/commit/?id=a34a022</a>

$ git log --stat -1 -p gtk/gtkwindow.c
commit a34a0224e4fc6eff35fd41b7f318517b20b95713
Author: Jasper St. Pierre <<a href="mailto:jstpierre@mecheye.net">jstpierre@mecheye.net</a>>
Date:   Fri Feb 13 18:21:42 2015 -0800

    gtkwindow: Don't set the background if the window is app-paintable

    This fixes transparent DND windows.
---
 gtk/gtkwindow.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 4dbde2a..2b1bcca 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -7006,7 +7006,7 @@ gtk_window_realize (GtkWidget *widget)
   /* We don't need to set a background on the GdkWindow; with decorations
    * we draw the background ourself
    */
-  if (!priv->client_decorated)
+  if (!priv->client_decorated && !gtk_widget_get_app_paintable (widget))
     gtk_style_context_set_background (gtk_widget_get_style_context (widget),
gdk_window);

   attributes.x = allocation.x;


Backporting this particular commit(part of 3.15.7 release) to 3.14.x has no
effect,
so rather than upgrade from:

gtk3-3.14.13-2.fc21
glib2-2.42.2-1.fc21
atk-2.14.0-1.fc21

to:

gtk3-3.15.7-1.fc21
glib2-2.43.4-1.fc21
atk-2.15.1-1.fc21

this would actually be the best solution:

gtk3-3.16.3-1.fc22
glib2-2.44.1-1.fc22
atk-2.16.0-1.fc22


I thank Ilia and Andrew for their participation.


Ref.
<a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - NV50: LightDM GTK+ Greeter Background - inconsistent display"
   href="show_bug.cgi?id=89730">https://bugs.freedesktop.org/show_bug.cgi?id=89730</a>
<a href="https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1459079">https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1459079</a></pre>
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