Ubuntu – ubuntu gnome 17.04 boot failure in VirtualBox after installing guest additions

17.04gnomevirtualbox

My VirtualBox Ubuntu Gnome 17.04 installation is suddenly not booting anymore. A screenshot of what I get at boot is attached, it just stays like this. The only thing that I did the last time before shutting the image down was installing the virtualbox guest additions via the provided image. I tried installing lightdm and using that; it loads, but after inserting my credentials it just silently returns to the login screen. Any suggestions?
boot log

Best Answer

For anyone still experiencing this issue and unable to get to your VM's terminal. Disabling "Enable 3D Acceleration" from VirtualBox Manager worked for me.