1

I initially wanted to upgrade my Ubuntu from 18.04 straight to 20.04 via the CLI using this guide, which was very straightforward but I ended up first upgrading to 19.10 with a plan to upgrade to 20.04 later on.

During the installation, I was prompted several times to decide if I want some of the files I configured to be replaced by newer files being installed, to which most I opted in keeping them as they were and some I did replace with the newly installed files. Other than that, during the entire installation process there were no errors or any other visible exceptions.

After rebooting, I got to the login screen but after a second the screen switched to a black console screen with a blinking underscore, which stayed until I rebooted again. This would persist until I boot in recovery mode from the GRUB boot menu advanced options. After logging in with my user, I was greeted with the "Oh no! Something has gone wrong" window with the option to log out.

Also, I was able to solve the above issue with the blinking screen by switching gdm with lightdm, afterward I had no issue with the gnome log in screen.

I was searching around to see if I can find the solution, but it seems that sadly nothing helped in this case. I did attempt the following:

  1. Perform a sudo apt upgrade && sudo apt update, as well as sudo apt-get upgrade. Interestingly enough it just runs couple of lines and doesn't do much else, when usually it does have a rather lengthy process to it.

  2. Perform sudo dpkg --configure -a, which does nothing (skips straight to the next console line).

  3. Remove the gnome and gnome-shell using apt-get remove gnome-session gnome gnome-shell, running another apt-get autoremove and then reinstalling gnome again using sudo apt install ubuntu-desktop.
  4. Creating a new user using sudo adduser username && sudo usermod -aG sudo username (assuming it's something to do with my personal gnome-shell tweaks or extensions), but I got the same result with a new user as well.

My initial instinct is that the issue is with the config file(s) I left or overwritten during the upgrade process, but the worst part is that I don't know how to even start debugging this or find what is causing this error. if anyone solved this issue before or able to assist in debugging the issue I would greatly appreciate it.

Edit: I would also like to point that while logged in the gnome with "Oh no!" state, if I press the super key I will be prompted the workspaces screen with the gnome fully visible and interactive, but leaving the workspace overview mode I will return to the "Oh no!" grey screen.

elitu
  • 111

0 Answers0