Tive o mesmo problema na minha VM
Isso ajudou.
1. Start guest OS 2. When GRUB message comes on the screen press 'Esc' 3. Type 'a' to append the word "single" to the end of the kernel statement 4. Press enter 5. At the 'root' prompt remove/rename Xorg configuration file: mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bk 6. Reboot the system