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Been running ubuntu 19.10 for months. Suddenly, after a reboot today, I get this message after logging in via the gui greeter:

"Oh no! Something has gone wrong. A problem has occurred and the system can't recover. Please log out and try again."

Same screen shown in this post: Can't use my desktop on Ubuntu 19.10 after upgrading from 18.04

The only option is to logout, which takes me back to the greeter screen.

I can login via TTY fine, fwiw.

user2901351
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3 Answers3

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You could try one of these:

  • Create new user and verify you could login with it

    sudo adduser username && sudo usermod -aG sudo username

  • Reinstall gnome:

    sudo apt purge *-gnome-*
sudo apt install ubuntu-desktop

User customization settings could be lost, but maybe user's customization is the cause of this buggy behavior.

Gryu
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I also aff a problem with gnome not working. I solved it with following commands :

sudo apt install lightdm
sudo dpkg-reconfigure lightdm

Note : gnome desktop manager is 'gdm', not 'lightdm', but I read it is about to be replaced by lightgdm (here)

Serge
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be careful and don't forget about changes to your desktop manager! Reconfigure it via sudo dpkg-reconfigure gdm3 . With all the problems in past with gdm etc.... people need to know simple fix for results encountered. Been there, done that!

MrBill
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