Comment 11 for bug 395314

Another quick workaround (if not already posted somewhere else) that worked for me:

- install xwit from using apt-install or synaptics
- add the following line to /etc/gdm/Init/Default or another script that gets called by gdm prior to login

xwit -root -warp 500 500 #or use any other x/y coordinates that lie within the range of the primary monitor

Hope this helps