I do create this bug, because I have the same bug, but I have a Intel video card, I do the system works by reseting the system with the kernel 3.19.0-31-generic, without problems, so i think it could be related to the kernel 4.2 that may not work with some specific video cards.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1510383 Title: updated from 15.04 to 15.10 and upon reboot X no longer works To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1510383/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs