Alright so I've had this happen in the past, and I just ended up giving up and installing a new virtual machine. I'm new to this, so I'm hoping I've just made a simple mistake.
I have a Ubuntu machine through Oracle VM VirturalBox. My host is Windows 10.
I recently updated:
$ sudo apt-get update && sudo apt-get dist-upgrade
I also installed guest additions so I could access a shared folder.
Then I clicked to reboot, and that's where my problem is--I haven't been able to successfully reboot since then.
The screen shows a bunch of [ OK ] prompts, and it stops on one that says:
[ OK ] Started User Manager for UID 120.
Although if memory serves, it stops on different prompts each time I reattempt.
EDIT: No, I guess memory doesn't serve. Seems to always stop on that prompt. The prompts before keep referencing 'gdm', like 'Removed slice User Slice of gdm'.
The solutions I've seen for similar problems use different commands. So I press CTRL + ALT + F2 to go get a terminal, but I can never login--the screen flickers so that I have to press each key a few times to get the letter to register and, since password characters never show up, I can't reliably type my password and login.
Any ideas on how to fix this, or some other solution that doesn't involve starting over from a new image?
EDIT: Solutions like this may be useful if that damn screen would stop flickering.
EDIT: After like 20 minutes, the flickering stopped and I logged into TTY2. Now having trouble attemping other solutions because my boot harddrive is full.