I can also confirm that the upgrade from xserver-xorg-core 2:1.11.4-0ubuntu10.4 to 2:1.11.4-0ubuntu10.6 has broken my secondary display. I didn't notice it for several days until a reboot... :/
I can also confirm that the upgrade from xserver-xorg-core 2:1.11. 4-0ubuntu10. 4 to 2:1.11. 4-0ubuntu10. 6 has broken my secondary display. I didn't notice it for several days until a reboot... :/