After a lot of manipulation, including switching to nouveau and back to nvidia a few times, the problem has now disappeared. Looking at the lastmod date on /etc/X11/xorg.conf, this should have occurred Aug-12 16:07 or later. But since I was under a crash deadline and lack of sleep, I wasn't able to analyze exactly what had happened.
I am attaching a couple of files to capture the state of the current working system: * /etc/X11/xorg.conf as ** Attachment added: "perhaps no solution, but current state of working system" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1035555/+attachment/3263900/+files/works-XorgConf.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1035555 Title: dual monitor cursor jumps across screen when crossing display edge To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1035555/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs