Tested on v3.19-rc3-vivid and DKMS would not build the nvidia drivers (see https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331-updates/+bug/1268257). The same thing happened with a manual dkms update. During reboot, Ubuntu segfaulted and the system had to be hard power cycled.
Tested on v3.19-rc3-vivid and DKMS would not build the nvidia drivers (see https:/ /bugs.launchpad .net/ubuntu/ +source/ nvidia- graphics- drivers- 331-updates/ +bug/1268257). The same thing happened with a manual dkms update. During reboot, Ubuntu segfaulted and the system had to be hard power cycled.