Make the test return to graphics.

tests/desktop_update_graphical.pm

@@ -39,6 +39,7 @@ sub run {
         }
     }
     assert_and_click 'desktop_package_tool_update';
+    # sometimes, refreshing does not work when clicked too soon
     sleep 20;
     # if this is KDE and it had already noticed the notification, we
     # will already have the apply button at this point

tests/desktop_upgrade_graphical.pm

@@ -8,6 +8,8 @@ sub run {
     my $self = shift;
     my $desktop = get_var('DESKTOP');
     
+    desktop_vt;
+    
     # login onto the system
     assert_screen "graphical_login";
     send_key "ret";