Looks like the two monitors don't have compatible ranges of resolutions, and it's picking 1280x800, which is fine for one monitor but invalid for the other.
-- [Intrepid] dpkg-reconfigure -phigh xserver-xorg results in an unusable X (no output) when two monitors are connected https://bugs.launchpad.net/bugs/286018 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs