Hi,
when running Debian-9.1 on an AMD64-machine with xserver-xorg-core (2:1.19.2-1+deb9u1) and xserver-common (2:1.19.2-1+deb9u1) keyboard and mouse are freezing up sometimes, too. Shutting down the PC or unplug/plug the USB-units can't be a solution for a longer period! Greetings Kim Olsen