VirtualBox black screen after installing guest additions

I'm running lubuntu-20.04.1-desktop-amd64.iso in VirtualBox (Version 5.2.42_Ubuntu r137960).

My physical system is Ubuntu 18.04.

After the installation of Lubuntu 20.04 in VirtualBox, the screen was black in fullscreen mode. So I wanted to fix it and installed the following in guest OS (20.04):

sudo apt-get install virtualbox-guest-utils virtualbox-guest-x11 virtualbox-guest-dkms

After I restarted it, the screen is black even when not in fullscreen mode. Can I fix it?

3

1 Answer

Shut down the guest and, from VM Settings > Display, change it to the older VBoxVGA controller (the one with no S).

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