I use a program called UTM on macOS to run an ARM version of Kali Linux in a virtual machine. I’ve use the virtual machine for quite a while, would update it weekly, and everything was fine.

To perform the update I would use the following commands from a command prompt with super user privileges:

apt update
apt full-upgrade  -y

A while back I performed an update, and now when I boot the machine, I get the usual graphical screen to select a login option and then the screen goes black. I can use Ctrl+Alt+F2 to get to a command prompt and login. I’ve been continuing to perform updates, only nothing has fixed the problem and I have not been able to run a graphical environment for quite a while.

What can be done to restore functionality so the graphical system will start working again?