References: bsc#1191358

Index: virt-manager-3.2.0/virtManager/details/console.py
===================================================================
--- virt-manager-3.2.0.orig/virtManager/details/console.py
+++ virt-manager-3.2.0/virtManager/details/console.py
@@ -923,6 +923,8 @@ class vmmConsolePages(vmmGObjectUI):
             return
 
         cpage = self.widget("console-pages").get_current_page()
+        if cpage == _CONSOLE_PAGE_GRAPHICS:
+            self._init_viewer()
         if cpage != _CONSOLE_PAGE_UNAVAILABLE:
             return