Same issue in bug #1559576 (Ubuntu GNOME boots to black screen when using proprietary Nvidia drivers on a laptop with Optimus)
Which is listed on GNOME release notes 16.04 (known Issues) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1571899 Title: Kubuntu Daily Image Ubiquity cannot connect to X server :0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1571899/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
