1

I had made changes to file

usr/share/gnome-shell/theme/gnome-classic.css

And

usr/share/gnome-shell/theme/Yaru/gnome-shell-theme.gresource

to decrease space between icons in app list. But, my system is now broken and after restart, I can't boot into Ubuntu.

I can go to recovery mode and access my terminal and grub is available too. I am using 20.04. How do I reverse those changes and properly boot into Ubuntu.

2

You have to reinstall the packages which provide these files - backup and reinstall:

  1. Backup:

    cp /usr/share/gnome-shell/theme/gnome-classic.css ~/
    cp /usr/share/gnome-shell/theme/Yaru/gnome-shell-theme.gresource ~/
    
  2. Reinstall:

    sudo apt-get install --reinstall gnome-shell-extensions yaru-theme-gnome-shell
    
  3. Then reboot.

1
  • Thank you very much man! I repaired my Ubuntu 20.04. – en0ndev Mar 25 at 22:22

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