After having problems on connecing to GPUs in Julia, I decided to give a trial in updating Ubuntu and Lambda stack, folloiwng the instructions given here:
Unfortunately, after the command
sudo do-release-upgrade,
The computer restarted and a black screen with a small white “-” on the left top of the screen appear, and apparently it does not respond to any command.
I would like to ask advices on how to solve this problem.
This likely means that the GUI terminal session is in use.
Hit one of the combinations ‘Control-Alt-F2’ to ‘Control-Alt-F5’
This will go to a command line session
Login
Clean up and reconfirm install
One reason is some commands create a xorg.conf
$ sudo rm /etc/X11/xorg.conf
Check if apt is up to date or if there is a issue.
$ sudo apt update
$ sudo apt upgrade
If you get errors like ‘–fix-missing’ and/or ‘–configure’
$ sudo apt install --fix-missing
or
$ sudo dpkg --configure