Update, replace Mint 17 MDM with GDM (different display managers). Once X has stopped, login at the console. Run "sudo service mdm stop" without quotes. This will stop the Mint MDM service. Install GDM with "sudo apt-get install gdm" without quotes. This will install the Ubuntu Gnome display manager. Select gdm when asked during the install. Reboot and a login screen should appear. I tried using lightdm, did not work. I have not tried KDE kdm. I should have thought of this earlier.
After installing Parallels tools, you may wind up with a black screen. Send a ctrl + alt + f1 or f2, your choice. Login at the console. Rename /etc/X11/xorg.conf.current_date to xorg.conf. Reboot and hopefully all is well.
Last edited: Jun 14, 2014