This bug was solved for me when applying a patch proposed for a different bug : https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/380126 (problem with the synaptic touchpad on the same computer model. Apparenlty it is due to bad interrupts by the touchpad. Hope this helps.
This bug was solved for me when applying a patch proposed for a different bug : https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-input- synaptics/ +bug/380126 (problem with the synaptic touchpad on the same computer model.
Apparenlty it is due to bad interrupts by the touchpad.
Hope this helps.