Steps to re-produce

1. I am using opensuse 13.1 as my host system with VirtualBox 4.3.18 
2. Installed opensuse 13.2 RC1 with GNOME desktop as virtualbox guest (either
from DVD or GNOME Live disk)
3. After reboot graphical desktop does not show up. Just blank screen.

Other details
- System booted fine. If I switch to text terminal (Right Ctrl+ F2) I can see
the prompt and all commands work fine.
- When I freshly installed again with KDE desktop, everything worked fine. I
can see the graphical desktop.

Workaround : 
- Goto text terminal (Right Ctrl+ F2)
- Uninstall the pre-installed virtualbox guest tools rpms
(virtualbox-guest-tools and virtualbox-guest-x11)
- Compile and install the guest tools from VirtualBox guest addition available
with the VirtualBox installation.
- Reboot and things work fine. 


I am not sure if the component should be GNOME or Installation. Please adjust
as appropriate.