05.11.2015 - How to fix black screen after login in Ubuntu 14.04? Finally run sudo reboot , Ubuntu restarts, and then you can log in again normally. Pingback: Finally solved the login loop for the Ubuntu 14.04 after NVIDIA | Mohsen's log dm-crypt and btrfs 15.10.2017; The perfect Btrfs setup for a server 23.9.2016 .