Reference: bnc#875111
Steps to get a KVM VM in the crashed state:
1) Install a sles12 KVM VM
2) Manually edit the XML and add/modify <on_crash>preserve</on_crash>
3) In virt-manager add the panic device (Details->Add Hardware)
4) Edit the VM's /etc/default/grub file and remove the crashkernel information
   and then run grub2-mkconfig /boot/grub2/grub.cfg.
5) Start the VM and within the VM's terminal type "echo 'c' > /proc/sysrq-trigger"
Index: virt-manager-3.3.0/virtManager/manager.py
===================================================================
--- virt-manager-3.3.0.orig/virtManager/manager.py
+++ virt-manager-3.3.0/virtManager/manager.py
@@ -776,7 +776,7 @@ class vmmManager(vmmGObjectUI):
             show_pause = bool(vm and vm.is_unpauseable())
         else:
             show_pause = bool(vm and vm.is_pauseable())
-        show_shutdown = bool(vm and vm.is_stoppable())
+        show_shutdown = bool(vm and vm.is_destroyable())
 
         if vm and vm.managedsave_supported:
             self.change_run_text(vm.has_managed_save())
Index: virt-manager-3.3.0/virtManager/vmmenu.py
===================================================================
--- virt-manager-3.3.0.orig/virtManager/vmmenu.py
+++ virt-manager-3.3.0/virtManager/vmmenu.py
@@ -21,6 +21,7 @@ class _VMMenu(Gtk.Menu):
         self._parent = src
         self._current_vm_cb = current_vm_cb
         self._show_open = show_open
+        self._shutdown = None
 
         self._init_state()
 
@@ -72,6 +73,7 @@ class VMShutdownMenu(_VMMenu):
             name = getattr(child, "vmm_widget_name", None)
             if name in statemap:
                 child.set_sensitive(statemap[name])
+                child.set_visible(statemap[name])
 
 
 class VMActionMenu(_VMMenu):
@@ -83,7 +85,8 @@ class VMActionMenu(_VMMenu):
         self._add_action(_("_Pause"), "suspend", VMActionUI.suspend)
         self._add_action(_("R_esume"), "resume", VMActionUI.resume)
         s = self._add_action(_("_Shut Down"), "shutdown", None)
-        s.set_submenu(VMShutdownMenu(self._parent, self._current_vm_cb))
+        self._shutdown = VMShutdownMenu(self._parent, self._current_vm_cb)
+        s.set_submenu(self._shutdown)
 
         self.add(Gtk.SeparatorMenuItem())
         self._add_action(_("Clone..."), "clone", VMActionUI.clone)
@@ -100,7 +103,7 @@ class VMActionMenu(_VMMenu):
     def update_widget_states(self, vm):
         statemap = {
             "run": bool(vm and vm.is_runable()),
-            "shutdown": bool(vm and vm.is_stoppable()),
+            "shutdown": bool(vm and vm.is_destroyable()),
             "suspend": bool(vm and vm.is_stoppable()),
             "resume": bool(vm and vm.is_paused()),
             "migrate": bool(vm and vm.is_stoppable()),
@@ -117,6 +120,8 @@ class VMActionMenu(_VMMenu):
                 child.get_submenu().update_widget_states(vm)
             if name in statemap:
                 child.set_sensitive(statemap[name])
+                if name == "shutdown" and self._shutdown:
+                    self._shutdown.update_widget_states(vm)
             if name in vismap:
                 child.set_visible(vismap[name])