This problem exist at least since 16.10 and i'm experience it in 17.04 also.
The solution can be found in the comments of the accepted answer here: https://askubuntu.com/questions/809477/keyboard-not-working-with-full- disk-encryption-after-installing-nvidia-drivers-o Qoute: "It seems to be related to the fact that the nvidia drivers need access to something on the encrypted disk." Work around: open /etc/default/grub and change GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash” in the to GRUB_CMDLINE_LINUX_DEFAULT=”” and sudo update-grub -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1721988 Title: Ubuntu 17.10 full disk encryption + Nvidia drivers not booting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-384/+bug/1721988/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs