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I maintain an Ubuntu VirtualBox server that hosts Ubuntu guest VMs. When I recently upgraded a VM from Ubuntu Desktop 20.04 to 22.04, I was unable to login to the VM. The server is headless (no monitor) so I use Jump Desktop (RDP client) to login to all the VMs. I suppose any RDP client would have this problem. When the login screen displayed, it would not accept any keyboard or mouse input. How do I fix this?

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  • Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer.
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    Commented Sep 10, 2022 at 18:35
  • This question is very specific
    – Steve O
    Commented Jan 22 at 17:39

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I tried to enable automatic login for the VM by editing /etc/gdm3/custom.conf to enable automatic login for a user by uncommenting parameters:

# Enabling automatic login
#  AutomaticLoginEnable = true
#  AutomaticLogin = user1

However, the screen still froze at the desktop after login.

I accidentally noticed that there was another parameter in the same file. Uncommenting it forces the login screen to use Xorg to display it. This solved the problem.

# Uncomment the line below to force the login screen to use Xorg
WaylandEnable=false

Note that I have always had a similar problem logging into Ubuntu desktops with earlier versions. The screen would not properly display the login screen but it would accept keyboard input. I could enter the user and password blindly to get to the desktop. This solution also fixes that problem.

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