Added docs for Xfce4 and workaround.

manual/source/dualmonitors.rst

@@ -196,6 +196,34 @@ From here you will need to set up your projector with the appropriate
 resolution, and position. OpenLP works best projecting to the monitor on the
 right.
 
+.. _xfce4display:
+
+Xfce4
+^^^^^
+
+This guide is for users of the Xfce4 desktop. Open the Xfce4 menu and chose
+:guilabel:`Settings Manager`.
+
+.. image:: pics/xfce4-settings.png 
+
+Open :guilabel:`Display` to open the settings for displays.
+
+.. image:: pics/xfce4-display.png 
+
+If the second display has not yet been enabled, enable it by selecting it in the
+window and tick `Use this display`.
+
+There is an issue with the Xfce4 compositor that makes OpenLP freeze when using
+a dual monitor setup. This issue can be worked around by disabling an option for
+the compositor. To do this open :guilabel:`Settings Manager` and open
+:guilabel:`Window Manager Tweaks`.
+
+.. image:: pics/xfce4-win-manager-tweaks-comp.png
+
+Go to the :guilabel:`Compositor` tab and disable :guilabel:`Display fullscreen
+overlay windows directly`. Click :guilabel:`Close` and now OpenLP should run
+without issues.
+
 Linux Systems Using nVidia Drivers
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 

manual/source/troubleshooting.rst

@@ -207,3 +207,10 @@ The `servicemanager` folder which can be found in OpenLP's data folder is used
 internally by OpenLP for temporary files and anything in there can and will be
 deleted by OpenLP. In general you should not modify or create files in OpenLP's
 data folder unless you know what you are doing.
+
+OpenLP freezes on Xfce4 in a dual monitor setup
+-----------------------------------------------
+
+There is an issue with the Xfce4 compositor that makes OpenLP freeze when using
+a dual monitor setup. See configuration of dual monitor for :ref:`xfce4display`
+for a solution.

scripts/batch-drop-shadow.scm

@@ -3,7 +3,7 @@
  ;
  ; Place the script in your gimp scripts folder (eg. ~/.gimp-2.8/scripts) go to the
  ; folder with images you wish to add shadow to and execute like this:
- ; gimp --no-data -i -b '(batch-drop-shadow "*.png" 8 8 10)' -b '(gimp-quit 0)'
+ ; gimp --no-data -i -b '(batch-drop-shadow "*.png" 3 3 5)' -b '(gimp-quit 0)'
  ;
 
  (define (batch-drop-shadow pattern