This problem (still or again) occurs with ubu 18.04 (host), 18.10 (guest) and virtualbox 5.2.18. After installing the guest additions at the host, the guest system will boot, but x server will crash and state "Warning, couldn't open module vboxvideo".
Modprobe vboxvideo will load the module, nevertheless X server will crash with the same message. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759452 Title: Xorg doesn't start after update on VMs - vboxvideo_drv.so missing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1759452/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs