Hello.
I'm experiencing exactly the same problem. I have freshly installed Ubuntu 15.04 with Gnome. When I was upgrading Gnome 3.14 to 3.16 I was asked to upgrade what I believe to be the kernel (? - I'm a Linux newcomer, I'm not 100% sure what am I even doing) from 3.19.0-15 to 3.19.0-16. I installed also proprietary NVidia Drivers. Now, using the advanced options in GRUB I managed to boot 3.19.0-15. I installed upstart-sysv and rebooted my computer. Something changed, I got some flashes of Gnome and got Ubuntu 15.04 ComputerName ComputerName log-in printed on my screen. Then everything disappeared and the screen remain black. I booted 3.19.0-15 again and reactivated Nouveau driver. Then I rebooted again and... everything is fine. Conclusion - the error is related to the combination Nvidia driver - version 346.59 and 3.19.0-15 kernel version. ** Also affects: nvidia-graphics-drivers-346-updates (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1432171 Title: [udev] Shows "starting version 219" boot message even with "quiet" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-346-updates/+bug/1432171/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs