guys, i had the same problem so i created a patch https://github.com/fazakis/cursor_jump_top_corner_x11_synaptics_bug i include installation instructions hope this helps...i don't really know why this problem is happening but i added a few sanidation lines of code that seem to workaround the problem...
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/962704 Title: cursor jumps to screen border when touching trackpad border To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/962704/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp