Gustavo Reis's questions

Specs

• Guest: Ubuntu 19.10;
• Host: Arch Linux;
• VirtualBox 6.0.14;
• On host Arch Linux, I have virtualbox-host-modules-arch installed.

| DE        | KDE Plasma 5.17.0                 |
| CPU       | AMD Ryzen 7 2700X (16) @ 3.700GHz |
| GPU       | NVIDIA GeForce GTX 1660           |
| RAM       | 16GB DDR4                         |
| Kernel    | 5.3.7-arch1-1-ARCH x86_64         |

Steps

Based on How do I install Guest Additions in a VirtualBox VM?:

1. I installed the packages build-esstential, dkms and virtualbox-guest-additions-iso;
2. I rebooted;
3. I ran the ISO from /usr/share/virtualbox/VBoxGuestAdditions.iso;
4. I rebooted;
5. The login screen does no longer show up.

For the login screen to show up, I have to enter into chroot from Live USB for uninstalling all VirtualBox Guest Additions packages. I did once. But I depend on VirtualBox Guest Addition for sharing the host's folders.

Observations

• I also disabled 3D acceleration, but the login screen also does not show up.
• I use PIIX3 chipset, USB Tablet pointing device, and VBoxSVGA graphics controller (I switched from to VBoxVGA, but the login screen does not show up).

Question

How to fix the login screen which does no longer show up after having installed VirtualBox Guest Addition on Ubuntu's guest virtual machine?

Update 2

Observe that I could not enter into the TTY. I entered via chroot from Live USB and removed the Guest Additions, the login screen showed up, but as I depend on Guest Additions for sharing the host's folders, I need to fix the login screen.