Black screen after GUI login on Ubuntu with tools installed.
I'm running on virutalbox (6.1.6r137129) on Windows 10 and I have installed an Ubuntu 20.04 guest on the host. I have then installed the virtualbox guest additions on the guest.
The problem I have is that after bootup, the login window is displayed and I log in but then the screen goes totally black. If I then resize the window, the desktop appears
I'm not sure if this is a bug in virtualbox / guest additions or some sort of conflict with Ubuntu. I have tried this multiple times installing new version of Ubuntu and each time the problem re-occurs so for me it is repeatable.
Steps to reproduce:
- Install Ubuntu 20.04 Guest OS (I gave it 128MB video memory, VMSVGA video, 3D acceleration enabled
- Boot guest OS
- Install guest additions (you'll need "build-essential" package installed too)
- Set guest to start up in full screen mode.
- Re-size guest window.