I can switch to terminal when the screen is black with CTRL-ALT-F1.
I have not managed to get any further with any tutorials how to solve it online.
There is some packages updated the last time it booted up yesterday. The dpkg.log with changes since it boot last time is attached.
I have also recorded a video how it looks like when booting normally and when nosplash quite is removed from grub boot.
The videos can be found here:
Anyone that can help me get my machine up and running again?
Anything else needed to figure out what is going on?