graphics: Don't define xorg.conf when standard

graphics/defaults/main.yml

@@ -27,5 +27,3 @@ required_packages:
   xorg-x11-server-Xorg: acc-sysadm
 
 xdmcp_enabled: false
-
-xorg_template: xorg_2mon.conf.j2

graphics/tasks/main.yml

@@ -6,15 +6,19 @@
 
 # CONFIGURE X SERVER
 
-- name: Get PCI port of screens
-  shell: lspci | awk '/VGA/ {sub("[.]", ":", $1); print $1}'
-  changed_when: false
-  register: r_graphical_pci_port
+block:
 
-- name: Configure X
-  template:
-    src: '{{ xorg_template }}'
-    dest: /etc/X11/xorg.conf
+  - name: Get PCI port of screens
+    shell: lspci | awk '/VGA/ {sub("[.]", ":", $1); print $1}'
+    changed_when: false
+    register: r_graphical_pci_port
+
+  - name: Configure X
+    template:
+      src: '{{ xorg_template }}'
+      dest: /etc/X11/xorg.conf
+
+  when: xorg_template is defined
 
 # CONFIGURE LIGHTDM