After upgrading my VM running Fedora 23 beta to the release version, Gnome Desktop Manager (GDM) no longer started again. This is the same issue with newer version of xorg-x11-*, and it’s not yet supported by VirtualBox 5.0.

I previously posted a quick fix by downgrading xorg-x11-* packages. To do that, I need to ssh into the VM.

Here’s how we can find the IP address of running VMs.

Let’s list the VMs available:

I’m interested in “f23”. To list all IPs associated with available NICs run:

Note that, if you don’t see any IPs listed, it’s likely that your VM is not running or/and the VM Guest Addition is not installed on that VM.