I've just installed Ubuntu 20.04 on my PC (this is a completely clean install) and I've had nothing but problems. Firstly it would keep booting into GRUB and absolutly nothing in BIOS settings fixed it. I had to reinstall ubuntu to fix it. Now I can't even log in! Everytime i press enter after my password it takes my back to the login screen! Is anyone else having these problems and knows how to fix it?

  • same problem.. did you find a work-around? – Jules Colle Apr 26 at 13:44
  • unfortunatly not. I'm redownloading the image as we speak and i'm going to try and reinstall yet again. 3rd time lucky lets hope, but I'm starting to think that this version is unstable from what i've experienced so far – Karl Griffiths Apr 26 at 13:47
  • i was able to log in a couple of times. i just installed docker, installed a vnc viewer and added some configuration changes i also have a very unsafe single digit password. maybe it's due to one of these things? do you see any resemblance with your setup? edit: i'm going to give this a try now, cause i also installed the nvidia driver: askubuntu.com/questions/1229821/… – Jules Colle Apr 26 at 13:50
  • okay, but i'm stuck on the grub at boot again now. It seems like it doesn't even want to run on my computer :/ – Karl Griffiths Apr 26 at 13:56
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    uninstalling nvidia fixed it for me. then i disabled auto-login, and reinstalled nvidia again. now it works. the auto-login in combination with nvidia drivers was causing it for me. hope you get it fixed too! gl! Edit: yep: the third party software likely includes the nvidia driver. – Jules Colle Apr 26 at 14:08

It seems to be an issue with the auto-login. One way to fix this is by disabling auto-login from the command prompt:

  • From the login screen hit <Ctrl> + <Alt> + <F4>
  • Login through the command prompt input: sudo nano /etc/gdm3/custom.conf

Line number 5 and 6 of custom.conf should be:


where, [username] is the name of the user for auto-login. Change this to:


Hit <Ctrl> + S to save, then reboot by hitting <Ctrl> + <Alt> + <F1> and selecting restart from the login menu.

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  • I can confirm that this a problem with automatic login. Also gives some very weird visuals, overlapping the desktop with the tty. thanks – Picard May 1 at 12:34

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