Thanks for the bug report. Please reproduce the problem again so we can collect the full system log, then reboot to a terminal and run:
journalctl -b-1 > prevboot.txt and attach the resulting text file here. Although your Xorg log already mentions: [ 20.820] (EE) NVIDIA(GPU-0): Failed to initialize the NVIDIA GPU at PCI:1:0:0. Please [ 20.820] (EE) NVIDIA(GPU-0): check your system's kernel log for additional error [ 20.820] (EE) NVIDIA(GPU-0): messages and refer to Chapter 8: Common Problems in the [ 20.820] (EE) NVIDIA(GPU-0): README for additional information. [ 20.820] (EE) NVIDIA(GPU-0): Failed to initialize the NVIDIA graphics device! we still need to see what happened before that. ** Summary changed: - Xorg freeze + System boots to a black screen when nvidia-390 is installed ** Package changed: xorg (Ubuntu) => nvidia-graphics-drivers-390 (Ubuntu) ** Changed in: nvidia-graphics-drivers-390 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/2019481 Title: System boots to a black screen when nvidia-390 is installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/2019481/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp