Comment 18 for bug 1220426

I have created file /etc/modprobe.d/psmouse.conf with following entry:

options psmouse proto=imps

I have rebooted the notebook and had to increase pointer speed of trackpad under System settings > Mouse & Touchpad after reboot. So far I don't have any issues with trackpad freezing.

Default parameter proto for psmouse module is set to auto. The current value of the proto paramater of psmouse kernel module can be read from /sys/module/psmouse/parameters/proto file:

cat /sys/module/psmouse/parameters/proto

After creating /etc/modprobe.d/psmouse.conf file parameter is set to ImPS/2.

The idea for changing psmouse proto parameter came from https://answers.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+question/176273.

So the quick fix would be:
1.) Run following command from terminal:
echo "options psmouse proto=imps" | sudo tee /etc/modprobe.d/psmouse.conf >/dev/null

2.) Reboot the system or reload psmouse module from terminal with following commands:
sudo modprobe -r psmouse && sudo modprobe psmouse

3.) Increase the speed of pointer under System settings > Mouse & Touchpad

Can anyone else confirm this fix ?