I've verified that this is fixed on an upgrade from Mythbuntu 12.04.4 to Mythbuntu 14.04. I tested this inside an Virtualbox VM, by creating a default xorg.conf file. The xorg.conf file remains in it's location (/etc/X11/xorg.conf) and is untouched after the upgrade.
Attached is the xorg.conf file I used in my testing
I've verified that this is fixed on an upgrade from Mythbuntu 12.04.4 to Mythbuntu 14.04. I tested this inside an Virtualbox VM, by creating a default xorg.conf file. The xorg.conf file remains in it's location (/etc/X11/ xorg.conf) and is untouched after the upgrade.
Attached is the xorg.conf file I used in my testing