I upgraded to Ubuntu 20.04 today, choosing LightDM over gdm3 during the upgrade. During the upgrade I was asked if I wanted to keep or replace /etc/sane.d/dll.conf file. I decided for keeping it.

Now, without actively rebooting, the "Oh no! Something went wrong" screen appeared.

As I am still inexperienced with this kind of troubleshooting, I feel it wouldn't be safe to just try out answers from other threads that don't have exactly the same 'history'.

Solutions I read included Ctrl+Alt+F4 and trying to login and get more information from the command line (Oh no! Something has gone wrong on restart).

Is that safe to do? Ideally, I'd like to save my data that is stored on an encrypted harddrive before trying to fix errors. I'd like to avoid reinstalling the OS.

From reading other threads, I know this post may be criticised as not being precise enough or haven't tried enough, but really I cannot get more information from that white screen myself and don't want to risk ruining everything just to provide more information...

Thank you for your help!! :)

Edit: I have no idea if the problem is related to lvm2-activation-generator, as in Ubuntu 19.10 “Something has gone wrong” after update from 19.04 This and other solutions include booting from a live usb. Can I do this 'safely' by simply switching the laptop off at this stage? Do I have to do sth before?


This will go a long way toward making that "Oh no something went wrong!" sign go away. First, press Ctrl+Alt+F3 to trigger the CLI, and login. Execute the command:

sudo apt-get update && sudo apt-get dist-upgrade 

to continue upgrading. Your machine will install the missing resources, and finish upgrading, and then you just have to clean up and reboot:

sudo apt-get clean && sudo apt-get autoremove && sudo reboot

Best of luck!

  • Comments are not for extended discussion; this conversation has been moved to chat. – Mitch May 14 '20 at 7:18
  • doesn't work for me – Sadegh Jan 21 at 17:59

My question has been answered cooperating with Ollie:

  • sudo apt-get update resulted in "Could not get lock /var/lib/apt/lists/lock. It is held by process 22027 (focal)"
  • I tried to identify the process with ps aux | grep -i apt and ps -aux | grep -iE "apt-get" which didn't work, but I could identify it with pgrep focal which gave me its process ID. I killed it with sudo kill <process_id>.
  • do-release-upgrade worked for me only without the -y option. It resulted in "There is no development version of an LTS available. To upgrade to the latest non-LTS development release set Prompt=normal in /etc/update-manager/release-upgrades"
  • Then I ran sudo apt-get upgrade -y and got the message "0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded". The 1 not upgraded was an expired libc++1 package.

Rebooting the computer, Ubuntu 20.04 worked well.

(I then installed the current version of this libc++1 package via Synaptic.)


I had the same issue while updating my ubuntu 18.04 to ubuntu 20.04, some of the packages got crashed up. Mainly it is showing due to Interruption of dpkg package while booting the system. So, here what I had done to resolve this problem.

Firstly, press Ctrl + Alt + F3 together in order to open the terminal, then enter your login credentials and execute these following commands given below:-

$ sudo apt-get upgrade && sudo apt-get update
$ sudo dpkg --configure -a
$ sudo apt-get clean && sudo apt-get autoremove
$ sudo reboot

And it will resolve the problem of dpkg package interruption problem.


I faced this problem and solved it by

First, go to tty: Ctrl + Alt + F3, and login.

Then, as dpkg was locking things, I deleted all lock log files

sudo rm /var/lib/apt/lists/lock /var/cache/apt/archives/lock /var/lib/dpkg/lock /var/lib/dpkg/lock-frontend

as described here.

Finally, I resumed the release upgrade by following the steps given in this answer.

  • Rasmus, isn't that careless though? Deleting all the lock files? – Ollie Aug 8 '20 at 14:25
  • @Ollie I don't know! Please enlighten me! – Rasmus Aug 11 '20 at 14:31

I had the same issue on ubuntu 20, I've tried many things but what worked for me was removing the gnome and gnome-shell and reinstalling:

$ sudo apt-get upgrade && sudo apt-get update
$ sudo apt-get upgrade
$ sudo dpkg --configure -a
$ sudo apt-get remove gnome-session gnome gnome-shell
$ sudo apt-get autoremove
$ sudo apt install ubuntu-desktop
$ sudo reboot

similar to was described here. (but my problem wasn't my user)

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