I am happily using Ubuntu Mate 15.04 (Mate 1.8.2) and I need to run a xrandr script in every initialization to correct the resolution of my external monitor.
But it doesn't has a /etc/mdm/Init/...
In gnome-fallback I used /etc/gdm/Init/Default but, for obvious reasons, Mate doesn't use GDM.
Where is the correct place to insert my xrandr commands in Ubuntu Mate?