RDP stops working correctly. Client can connect, but screen is black.

[tale]

I've had this occur several times in the past few days. I have a headless setup running on Ubuntu with Windows XP running as a guest. If the network connection drops or I kill the rdp client that is connected, then it will occasionally show a black screen when I reconnect. I've tried reconnecting multiple times with different clients (Windows RDC and rdesktop-vrdp) and the screen is always black.

The only way that I can fix the rdp connection is to shutdown the windows xp guest. Restarting Windows XP doesn't fix the issue.

After a complete shutdown, I can restart the guest and then the rdp connection is fine again.