gentoo-overlay/media-gfx/sane-frontends/files/MissingCapsFlag.patch

--- a/src/gtkglue.c	2005-04-16 15:12:07.000000000 +0200
+++ b/src/gtkglue.c	2009-06-24 00:26:46.000000000 +0200
@@ -1476,8 +1476,7 @@
 	  || opt->type == SANE_TYPE_GROUP || !dialog->element[i].widget)
 	continue;
 
-      if (!(opt->cap & SANE_CAP_ALWAYS_SETTABLE))
-	gtk_widget_set_sensitive (dialog->element[i].widget, sensitive);
+      gtk_widget_set_sensitive (dialog->element[i].widget, sensitive);
     }
 }