I tried editing in GRUB and changing quiet splash
to nomodeset
, and all it did was turn the black screen purple. I'm not sure what to do. I was trying to install dependencies for ibus for a Tibetan keyboard. Then I tried to restart and the black screen began.
I installed the dependencies listed here: https://www.christian-steinert.de/home/tibetan-computing/typing-tibetan-on-windows-and-linux
sudo apt install ubuntu-desktop
worked for me. Sorry I misread your comment. After doing what's in the first link you commented and running that command, I am now able to fully boot into Ubuntu.