My problem turned out to be the one covered by bug #286424 which I was able to fix with the instructions in that comment.
-- [Intrepid Beta 1] Impossible to set second screen as separate X screen using Nvidia drivers https://bugs.launchpad.net/bugs/279222 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
